You searched for subject:(Traffic assignment)
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1.
Levin, Michael William.
Integrating autonomous vehicle behavior into planning models.
Degree: MSin Engineering, Transportation, 2015, University of Texas – Austin
URL: http://hdl.handle.net/2152/31334
► Autonomous vehicles (AVs) may soon be publicly available and are expected to increase both network capacity and travel demand. Reduced safety margins from computer precision…
(more)
▼ Autonomous vehicles (AVs) may soon be publicly available and are expected to increase both network capacity and travel demand. Reduced safety margins from computer precision may increase network capacity and allow for more efficient intersection controls. AVs also offer the option of repositioning trips to avoid parking fees or share the vehicle between household members, which may increase the total number of vehicle trips and decrease the relative utility of transit. Since AVs may be available within one or two decades, which is within the span of long-term planning models, practitioners may soon wish to predict the effects of AVs on
traffic networks. This thesis modifies the four-step planning model commonly used by practitioners to include AV behaviors and capacity improvements. Because dynamic
traffic assignment (DTA) offers more realistic flow propagation and intersection control options, the four-step model is modified to incorporate DTA with endogenous departure time choices. To facilitate modeling of AV intersections, the tile-based reservation (TBR) control policy is simplified into a conflict region (CR) model compatible with general simulation-based DTA and with greatly improved computational tractability. Results suggest that although the total number of personal-vehicle trips may almost double (due to repositioning trips to the origin to avoid parking costs), increases in network and intersection capacity can mostly offset or even improve network conditions. Use of dynamic flow propagation instead of static travel time functions in the four-step model results in predictions of increased average travel speed although both static and dynamic planning models predict a high reliance on repositioning trips (i.e., empty-vehicle travel).
To study AV behaviors in DTA, this thesis first integrates DTA into the four-step model with the addition of departure time choice. This model alone may be useful for practitioners as departure time modeling is a major concern with DTA planning models. Also, the TBR intersection policy has only been studied in micro-simulation with heuristic routing strategies. The CR model opens this new technique to study under UE behavior, which is the first step for the bridge between technology demonstration simulations to models practitioners can use to evaluate implementation. . Therefore, the models developed here for the purposes of predicting AV trip and mode choices may themselves become useful tools for other applications.
Advisors/Committee Members: Boyles, Stephen David, 1982- (advisor), Kockelman, Kara M (committee member).
Subjects/Keywords: Autonomous vehicles; Traffic assignment; Planning
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APA (6th Edition):
Levin, M. W. (2015). Integrating autonomous vehicle behavior into planning models. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/31334
Chicago Manual of Style (16th Edition):
Levin, Michael William. “Integrating autonomous vehicle behavior into planning models.” 2015. Masters Thesis, University of Texas – Austin. Accessed April 12, 2021.
http://hdl.handle.net/2152/31334.
MLA Handbook (7th Edition):
Levin, Michael William. “Integrating autonomous vehicle behavior into planning models.” 2015. Web. 12 Apr 2021.
Vancouver:
Levin MW. Integrating autonomous vehicle behavior into planning models. [Internet] [Masters thesis]. University of Texas – Austin; 2015. [cited 2021 Apr 12].
Available from: http://hdl.handle.net/2152/31334.
Council of Science Editors:
Levin MW. Integrating autonomous vehicle behavior into planning models. [Masters Thesis]. University of Texas – Austin; 2015. Available from: http://hdl.handle.net/2152/31334

Hong Kong University of Science and Technology
2.
Ye, Hongbo.
Day-to-day flow dynamic models and applications.
Degree: 2014, Hong Kong University of Science and Technology
URL: http://repository.ust.hk/ir/Record/1783.1-70915
;
https://doi.org/10.14711/thesis-b1334181
;
http://repository.ust.hk/ir/bitstream/1783.1-70915/1/th_redirect.html
► This dissertation proposes two new models and discusses two applications of day-to-day dynamic models. A generalized invariance theorem is adopted to investigate the stability issues…
(more)
▼ This dissertation proposes two new models and discusses two applications of day-to-day dynamic models. A generalized invariance theorem is adopted to investigate the stability issues of these models when the widely-used Lyapunov’s second theorem and Lasalle’s invariance principle are not applicable. Flow dynamics incorporating tradable credit scheme and congestion pricing scheme are investigated. The effectiveness of both schemes can be assured under mild conditions. The first model combines traveler’s perceiving, learning and route switching behavior while assuring nonnegative flows. With separable link travel time functions, the dynamic path flows converge to the Wardrop’s user equilibrium path flow set. In the second model, the rational behavior adjustment process in Yang and Zhang (2009) is extended to incorporate boundedly rational user equilibrium. Specific models are constructed and numerical examples are conducted for demonstration. The first application of day-to-day dynamics is to investigate the price and flow dynamics of a tradable credit scheme. A continuous dynamic model in a finite time horizon is proposed to describe travelers’ learning behavior and the evolution of network flows and credit price. Existence and uniqueness of the equilibria are established. The conditions for stability and convergence of the dynamic system as the time horizon extends to infinity and the impact of limited implementation time horizon on the system behavior are investigated. The second application examines the availability of a trial-and-error toll scheme with day-to-day flow dynamics. The trial-and-error method was proposed in Yang et al. (2004) for discovering system optimal flow pattern and toll scheme with the absence of demand functions: the links tolls were firstly calculated based on some target flow pattern and then imposed on the network, after which the user equilibrium flow pattern was instantly reached and utilized to update the target flows. In this dissertation, the assumption on the instantaneous realization of user equilibrium in Yang et al. (2004) is relaxed and their iterative scheme is extended for implementing the road pricing in a traffic network with day-to-day flow dynamics and evolution. The path flows are assumed to evolve following the “excess travel cost dynamics” during each inter-trial period and the user equilibrium state may not be achieved at the end of each inter-trial period. With mild assumptions on the flow evolution process, the trial-and-error method is still applicable to identify the system optimal link tolls and decentralize the system optimal flows, while neither the demand functions nor the mechanism of the flow evolution are explicitly required. A methodology is developed for both updating the toll charges and choosing the inter-trial periods to assure the iterative approach converging towards the system optimum. Some numerical examples are conducted to support the theoretical findings.
Subjects/Keywords: Traffic assignment
; Mathematical models
; Traffic flow
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ye, H. (2014). Day-to-day flow dynamic models and applications. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-70915 ; https://doi.org/10.14711/thesis-b1334181 ; http://repository.ust.hk/ir/bitstream/1783.1-70915/1/th_redirect.html
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ye, Hongbo. “Day-to-day flow dynamic models and applications.” 2014. Thesis, Hong Kong University of Science and Technology. Accessed April 12, 2021.
http://repository.ust.hk/ir/Record/1783.1-70915 ; https://doi.org/10.14711/thesis-b1334181 ; http://repository.ust.hk/ir/bitstream/1783.1-70915/1/th_redirect.html.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ye, Hongbo. “Day-to-day flow dynamic models and applications.” 2014. Web. 12 Apr 2021.
Vancouver:
Ye H. Day-to-day flow dynamic models and applications. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2014. [cited 2021 Apr 12].
Available from: http://repository.ust.hk/ir/Record/1783.1-70915 ; https://doi.org/10.14711/thesis-b1334181 ; http://repository.ust.hk/ir/bitstream/1783.1-70915/1/th_redirect.html.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ye H. Day-to-day flow dynamic models and applications. [Thesis]. Hong Kong University of Science and Technology; 2014. Available from: http://repository.ust.hk/ir/Record/1783.1-70915 ; https://doi.org/10.14711/thesis-b1334181 ; http://repository.ust.hk/ir/bitstream/1783.1-70915/1/th_redirect.html
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of New South Wales
3.
Li, Caixia.
Improving Cooperative Transportation Management and Route Guidance Systems under Provision of Real-Time Traffic Information.
Degree: Engineering & Information Technology, 2014, University of New South Wales
URL: http://handle.unsw.edu.au/1959.4/54013
;
https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12721/SOURCE02?view=true
► The route guidance information, which aims at assigning travellers to a set of paths from origins to destinations, can be obtained by solving the Dynamic…
(more)
▼ The route guidance information, which aims at assigning travellers to a set of paths from origins to destinations, can be obtained by solving the Dynamic
Traffic Assignment (DTA) problems. However, route choices given by dynamic user equilibrium (DUE) or dynamic system optimum (DSO) cannot simultaneously benefit both sides and can easily result in recurring congestion. In this context, this research focuses on the real-time
traffic re-distribution and route guidance system, which can achieve an efficient distribution of network capacity over time and space without seriously violating travellers' preferences. This research is involved with the integration of
traffic flow dynamics model,
traffic assignment model and route choice modelling.The real-time
traffic information provision system is the basis of the research, which can provide real-time
traffic information prediction based on day-to-day dynamics and current
traffic information.
Traffic dynamics models are targeted to support Advanced
Traffic Management and InformationSystem (ATMIS) to provide a mathematical approximation of the dynamics of
traffic flows based on the real-time
traffic information. In this research, a path based flow model integrated the point queue model (PQ) with generalized expansion method (GEM) is proposed, which can capture
traffic dynamics and model dynamic flow propagation process. Based on the path based flow model, the path marginal cost can be achieved and time dependent
traffic assignment can be established.In order to meet the requirements of travellers, a route choice modelling combining the analytical hierarchy process (AHP) with fuzzy inference technique is introduced, which can handle the vagueness of
traffic attributes, simplify the definition of decision strategy and represent multiple criterions explicitly. The user equilibrium (UE)
traffic assignment based on the route choice modelling can be favourable to travellers. For the
traffic management, it requires vehicles cooperatively to achieve system optimal (SO)
traffic assignment, while
traffic users competitively make route choices based on UE
traffic assignment. Thus, the cooperation and competition relationship can be modelled by the Stackelberg game based model to balance the benefit between
traffic authorities and travellers. Moreover, the gradient projection method is introduced to improve the efficiency of the integrated system.
Advisors/Committee Members: Anavatti, Sreenatha, Engineering & Information Technology, UNSW Canberra, UNSW, Ray, Tapabrata, Engineering & Information Technology, UNSW Canberra, UNSW.
Subjects/Keywords: Route choice modelling; Traffic assignment; Traffic prediction
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Li, C. (2014). Improving Cooperative Transportation Management and Route Guidance Systems under Provision of Real-Time Traffic Information. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/54013 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12721/SOURCE02?view=true
Chicago Manual of Style (16th Edition):
Li, Caixia. “Improving Cooperative Transportation Management and Route Guidance Systems under Provision of Real-Time Traffic Information.” 2014. Doctoral Dissertation, University of New South Wales. Accessed April 12, 2021.
http://handle.unsw.edu.au/1959.4/54013 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12721/SOURCE02?view=true.
MLA Handbook (7th Edition):
Li, Caixia. “Improving Cooperative Transportation Management and Route Guidance Systems under Provision of Real-Time Traffic Information.” 2014. Web. 12 Apr 2021.
Vancouver:
Li C. Improving Cooperative Transportation Management and Route Guidance Systems under Provision of Real-Time Traffic Information. [Internet] [Doctoral dissertation]. University of New South Wales; 2014. [cited 2021 Apr 12].
Available from: http://handle.unsw.edu.au/1959.4/54013 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12721/SOURCE02?view=true.
Council of Science Editors:
Li C. Improving Cooperative Transportation Management and Route Guidance Systems under Provision of Real-Time Traffic Information. [Doctoral Dissertation]. University of New South Wales; 2014. Available from: http://handle.unsw.edu.au/1959.4/54013 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12721/SOURCE02?view=true

Cornell University
4.
Li, Chunying.
Strategic Planning For Shelter Locations And Transportation Under Hurricane Conditions.
Degree: PhD, Civil and Environmental Engineering, 2011, Cornell University
URL: http://hdl.handle.net/1813/30625
► Responding to hurricanes is an exceedingly complex task whose effectiveness can significantly influence the final impact of a hurricane. Despite a lot of progress, recent…
(more)
▼ Responding to hurricanes is an exceedingly complex task whose effectiveness can significantly influence the final impact of a hurricane. Despite a lot of progress, recent events and unchecked population growth in hurricane-prone regions make it clear that having appropriate shelter options and shelter evacuation plans is very important. This research proposes a scenario-based shelter location model that identifies a set of shelter locations to maintain over time. These locations are chosen such that they are robust across a range of major hurricane events. This model considers the influence of changing the selection of shelter locations on drivers' route choice behavior and the resulting
traffic congestion. The problem is formulated as a two-stage stochastic bilevel programming model where the evacuees' route choice follows dynamic user equilibrium (DUE). Aiming for large-scale realistic applications, a heuristic approach is developed to efficiently solve the formulation. A case study in the state of North Carolina is presented to illustrate the applicability and efficacy of the proposed model formulation and solution approach.
Advisors/Committee Members: Nozick, Linda K. (chair), O'Rourke, Thomas Denis (committee member), Gao, Huaizhu (committee member).
Subjects/Keywords: hurricane evacuation; dynamic traffic assignment; public shelter
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Li, C. (2011). Strategic Planning For Shelter Locations And Transportation Under Hurricane Conditions. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/30625
Chicago Manual of Style (16th Edition):
Li, Chunying. “Strategic Planning For Shelter Locations And Transportation Under Hurricane Conditions.” 2011. Doctoral Dissertation, Cornell University. Accessed April 12, 2021.
http://hdl.handle.net/1813/30625.
MLA Handbook (7th Edition):
Li, Chunying. “Strategic Planning For Shelter Locations And Transportation Under Hurricane Conditions.” 2011. Web. 12 Apr 2021.
Vancouver:
Li C. Strategic Planning For Shelter Locations And Transportation Under Hurricane Conditions. [Internet] [Doctoral dissertation]. Cornell University; 2011. [cited 2021 Apr 12].
Available from: http://hdl.handle.net/1813/30625.
Council of Science Editors:
Li C. Strategic Planning For Shelter Locations And Transportation Under Hurricane Conditions. [Doctoral Dissertation]. Cornell University; 2011. Available from: http://hdl.handle.net/1813/30625

Hong Kong University of Science and Technology
5.
Ye, Zihao.
Travel cost estimation and prediction on road network.
Degree: 2014, Hong Kong University of Science and Technology
URL: http://repository.ust.hk/ir/Record/1783.1-70600
;
https://doi.org/10.14711/thesis-b1301508
;
http://repository.ust.hk/ir/bitstream/1783.1-70600/1/th_redirect.html
► With the development of modern technology, advanced GPS tracking solutions offer us the best opportunity to learn the citys traffic knowledge. Travel cost on road…
(more)
▼ With the development of modern technology, advanced GPS tracking solutions offer us the best opportunity to learn the citys traffic knowledge. Travel cost on road segments is the important hidden knowledge in the metropolitan city, which can be leveraged by travel route planning, traffic event discovery, and citys fraud detection, etc. This paper addresses the problem of travel cost estimation and prediction on road network with a not only innovative but also practical solution. Although some previous work deal with the same topic, they estimate travel cost on road segments based on the spatial and temporal smoothness of adjacent neighbors, which is unreasonable under some circumstances. Other works predicting travel cost ignore the obstacle of data sparsity by not predicting the travel cost of road segments without traffic data. In viewing this defect, we proposed the methodology to estimate and predict travel cost based on objects similarity. To be more specifically, we define the spatial temporal dividing sample as the minimal unit whose travel cost is to be estimated or predicted. Knowledgeable samples present those who have traffic data points, and their travel cost can be estimated by the traffic data. While unknowledgeable samples are those who encounter the problem of data sparsity, and have no estimation of travel cost since the lack of traffic data points. By extracting both the static and dynamic features for those samples, we profile them and apply the clustering algorithm on them to identify similar samples. Within each cluster, we leverage the artificial neural network to build the mapping relationship between knowledgeable samples features and their travel cost. With the help of this mapping relationship, we finally infer the clusters unknowledgeable samples travel cost. In terms of travel cost prediction, based on the intuition that similar road segments share similar travel cost pattern, we put all the road segments into different clusters and share the observed traffic data in the same cluster to overcome the obstacle of data sparsity. And finally we leverage the time series predicting model to predict the travel cost in the future. We evaluate our methodology on one-month real traffic data from Shanghai. The experimental results on both small data set and large data set show the validity and practicality of our methodology.
Subjects/Keywords: Travel costs
; Mathematical models
; Traffic assignment
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ye, Z. (2014). Travel cost estimation and prediction on road network. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-70600 ; https://doi.org/10.14711/thesis-b1301508 ; http://repository.ust.hk/ir/bitstream/1783.1-70600/1/th_redirect.html
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ye, Zihao. “Travel cost estimation and prediction on road network.” 2014. Thesis, Hong Kong University of Science and Technology. Accessed April 12, 2021.
http://repository.ust.hk/ir/Record/1783.1-70600 ; https://doi.org/10.14711/thesis-b1301508 ; http://repository.ust.hk/ir/bitstream/1783.1-70600/1/th_redirect.html.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ye, Zihao. “Travel cost estimation and prediction on road network.” 2014. Web. 12 Apr 2021.
Vancouver:
Ye Z. Travel cost estimation and prediction on road network. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2014. [cited 2021 Apr 12].
Available from: http://repository.ust.hk/ir/Record/1783.1-70600 ; https://doi.org/10.14711/thesis-b1301508 ; http://repository.ust.hk/ir/bitstream/1783.1-70600/1/th_redirect.html.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ye Z. Travel cost estimation and prediction on road network. [Thesis]. Hong Kong University of Science and Technology; 2014. Available from: http://repository.ust.hk/ir/Record/1783.1-70600 ; https://doi.org/10.14711/thesis-b1301508 ; http://repository.ust.hk/ir/bitstream/1783.1-70600/1/th_redirect.html
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Toronto
6.
Koulakezian, Agop.
Dynamic Route Guidance Algorithms for Robust Roadway Networks.
Degree: PhD, 2016, University of Toronto
URL: http://hdl.handle.net/1807/76464
► This Thesis focuses on developing robust dynamic route guidance algorithms to reduce traffic congestion in roadway networks. While recurring traffic congestion is normally the focus…
(more)
▼ This Thesis focuses on developing robust dynamic route guidance algorithms to reduce
traffic congestion in roadway networks. While recurring
traffic congestion is normally the focus in planning and investment decisions, almost half of
traffic congestion is caused by non-recurring
traffic disturbances, primarily caused by incidents, vehicle breakdowns, extreme weather events, etc. In order to reduce
traffic congestion, we focus on the problem of understanding the effect of
traffic disturbances and reducing their impact on roadway networks. We introduce a systematic framework for defining the context of robustness based on the severity, frequency and predictability of
traffic disturbances and for developing a robust design for roadway networks based on network design goals. We also present methods to speed up
traffic assignment algorithms through compiler optimizations and parallelism, to efficiently measure the effect of
traffic disturbances, and enable real-time ITS applications including dynamic route guidance systems. Next, we introduce a hybrid metric for measuring robustness in a roadway network by extending the shortest-path betweenness metric from network science, and augmenting it with links weights based on dynamic
traffic flow metrics. Finally, we implement a robust dynamic
traffic assignment algorithm for roadway networks based on this metric and test it on a large-scale calibrated network model for the Greater Toronto Area. Performance results show that the robust
traffic assignment algorithm reduces vehicle travel times compared to existing
traffic assignment algorithms, with and without the presence of disturbances in the form of
traffic incidents. This makes a strong case for
traffic planners and operators to use robust dynamic route guidance systems within actual implementations of real-time ITS strategies to help proactively alleviate
traffic congestion due to disturbances.
Advisors/Committee Members: Leon-Garcia, Alberto, Electrical and Computer Engineering.
Subjects/Keywords: Criticality; Network Science; Reliability; Robustness; Traffic Assignment; Traffic Simulator; 0544
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Koulakezian, A. (2016). Dynamic Route Guidance Algorithms for Robust Roadway Networks. (Doctoral Dissertation). University of Toronto. Retrieved from http://hdl.handle.net/1807/76464
Chicago Manual of Style (16th Edition):
Koulakezian, Agop. “Dynamic Route Guidance Algorithms for Robust Roadway Networks.” 2016. Doctoral Dissertation, University of Toronto. Accessed April 12, 2021.
http://hdl.handle.net/1807/76464.
MLA Handbook (7th Edition):
Koulakezian, Agop. “Dynamic Route Guidance Algorithms for Robust Roadway Networks.” 2016. Web. 12 Apr 2021.
Vancouver:
Koulakezian A. Dynamic Route Guidance Algorithms for Robust Roadway Networks. [Internet] [Doctoral dissertation]. University of Toronto; 2016. [cited 2021 Apr 12].
Available from: http://hdl.handle.net/1807/76464.
Council of Science Editors:
Koulakezian A. Dynamic Route Guidance Algorithms for Robust Roadway Networks. [Doctoral Dissertation]. University of Toronto; 2016. Available from: http://hdl.handle.net/1807/76464

University of Texas – Austin
7.
Chen, Amber.
Subnetwork analysis : methodology and application.
Degree: PhD, Civil Engineering, 2018, University of Texas – Austin
URL: http://hdl.handle.net/2152/63477
► The focus of this dissertation is to create robust tools that enable efficient and comprehensive subnetwork analysis for Dynamic Traffic Assignment (DTA) and a microscopic…
(more)
▼ The focus of this dissertation is to create robust tools that enable efficient and comprehensive subnetwork analysis for Dynamic
Traffic Assignment (DTA) and a microscopic simulation setting. A DTA subnetwork can potentially replace a large urban transportation network that experiences a change in only a small fraction of the whole network. However, DTA mainly uses Cell Transmission Model (CTM), which lacks many details provided through microscopic
traffic simulation. Also, there is very little research done on the balance between the computational time and the subnetwork size. Computational time increases when using a larger subnetwork, but the simulated result is more similar to that of the entire network. Conversely, the computational time decreases when using a smaller subnetwork, but the simulated result might not replicated the entire network.
Currently, extracting a subnetwork is a manual and time-consuming process, requiring an entire coded urban network in ArcGIS. Therefore, to overcome these shortcomings this study automated the process of extracting a subnetwork. Moreover, to further the transition between long-term and short-term
traffic analysis, the study integrated a DTA simulator and a microscopic
traffic simulator so that together they can assign
traffic and provide detailed
traffic result. This study also defined an appropriate sub-arterial size for the microscopic simulator, which is not the same as the size of the DTA subnetwork. Furthermore, this study analyzed several factors which significantly influence computational time, and developed optimization models to find the balance between the computational time and error resulting from sub-area size.
Ultimately, this study developed two programs that can automatically extract a subnetwork from a regional DTA network, and automatically develop an identical subnetwork in a microscopic simulator from this DTA network of an appropriate size. The methodologies this study built promote the efficient analysis of
traffic conditions and facilitate the implementation of advanced models that were previously limiting in terms of the amount of time required to compute results; also, the automatic tools this study developed will contribute to the depth and the breadth of dynamic transportation systems analysis.
Advisors/Committee Members: Machemehl, Randy B. (advisor), Zhang, Zhanming (committee member), Boyles, Stephen (committee member), Leite, Fernanda (committee member), Zhang, Ming (committee member).
Subjects/Keywords: Dynamic traffic assignment; Subnetwork; Mesoscopic traffic simulator; Microscopic simulator; Simulation
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Chen, A. (2018). Subnetwork analysis : methodology and application. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/63477
Chicago Manual of Style (16th Edition):
Chen, Amber. “Subnetwork analysis : methodology and application.” 2018. Doctoral Dissertation, University of Texas – Austin. Accessed April 12, 2021.
http://hdl.handle.net/2152/63477.
MLA Handbook (7th Edition):
Chen, Amber. “Subnetwork analysis : methodology and application.” 2018. Web. 12 Apr 2021.
Vancouver:
Chen A. Subnetwork analysis : methodology and application. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2018. [cited 2021 Apr 12].
Available from: http://hdl.handle.net/2152/63477.
Council of Science Editors:
Chen A. Subnetwork analysis : methodology and application. [Doctoral Dissertation]. University of Texas – Austin; 2018. Available from: http://hdl.handle.net/2152/63477

University of New South Wales
8.
Duell, Melissa.
Strategic Traffic Assignment: Models and Applications to Capture Day-to-Day Flow Volatility.
Degree: Civil & Environmental Engineering, 2015, University of New South Wales
URL: http://handle.unsw.edu.au/1959.4/54800
;
https://unsworks.unsw.edu.au/fapi/datastream/unsworks:35952/SOURCE02?view=true
► Traffic assignment models continue to play a critical role in the transportation planning process. Furthermore, day-to-day traffic flow volatility is a well-acknowledged phenomenon that planners…
(more)
▼ Traffic assignment models continue to play a critical role in the transportation planning process. Furthermore, day-to-day
traffic flow volatility is a well-acknowledged phenomenon that planners and researchers alike view as increasingly important. However despite the importance of accounting for volatility, deployed
assignment models capable of large-scale application have continued relying on traditional assumptions of determinism and perfect information. This research focuses on the impact of day-to-day demand uncertainty on equilibrium-based
traffic models by advancing the concept of strategic
traffic assignment. In the strategic user equilibrium (StrUE) model, the daily travel demand is treated as a random variable, and users are assumed to have knowledge about the day-to-day demand but are unaware of the specific
traffic conditions they will experience during travel. Therefore, drivers make a strategic route choice to minimize their expected travel cost and follow that route independent of the experienced conditions. The result is an equilibrium
assignment based on link flow proportions, as opposed to link flow volumes. Furthermore, as the day-to-day demand realization changes, the equilibrium flow proportions will remain the same. Thus, the resulting flows may appear volatile on a day-to-day basis, but can actually be represented by a higher level mathematical equilibrium.Part I of this thesis explores static models of strategic
traffic assignment. Strategic
traffic assignment is not only significant as a modelling approach, but also for the implications of the model in important network management applications. Therefore, this thesis implements the strategic
traffic assignment model in two common transport problems: road pricing and capacity-enhancement network design. Static equilibrium models are useful for many applications, particularly on a large scale, they cannot capture a number of fundamental
traffic characteristics due to their time invariant assumptions. Dynamic
traffic assignment is a cutting edge extension to the basic models that provide a more realistic representation of
traffic flow, although they are significantly more complex. In order to explore the strategic concept from multiple perspectives, Part II of this thesis proposes the strategic system optimal dynamic
traffic assignment (StrSODTA) and explores a network design application.The core contribution of this research is to formulate and explore the implications of the strategic approach to accounting for day-to-day demand uncertainty, and furthermore to demonstrate the impact on practical transport planning applications.
Advisors/Committee Members: Waller, Travis, Civil & Environmental Engineering, Faculty of Engineering, UNSW, Gardner, Lauren, Civil & Environmental Engineering, Faculty of Engineering, UNSW.
Subjects/Keywords: Traffic network design problem; Traffic assignment; Uncertainty in modelling
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Duell, M. (2015). Strategic Traffic Assignment: Models and Applications to Capture Day-to-Day Flow Volatility. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/54800 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:35952/SOURCE02?view=true
Chicago Manual of Style (16th Edition):
Duell, Melissa. “Strategic Traffic Assignment: Models and Applications to Capture Day-to-Day Flow Volatility.” 2015. Doctoral Dissertation, University of New South Wales. Accessed April 12, 2021.
http://handle.unsw.edu.au/1959.4/54800 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:35952/SOURCE02?view=true.
MLA Handbook (7th Edition):
Duell, Melissa. “Strategic Traffic Assignment: Models and Applications to Capture Day-to-Day Flow Volatility.” 2015. Web. 12 Apr 2021.
Vancouver:
Duell M. Strategic Traffic Assignment: Models and Applications to Capture Day-to-Day Flow Volatility. [Internet] [Doctoral dissertation]. University of New South Wales; 2015. [cited 2021 Apr 12].
Available from: http://handle.unsw.edu.au/1959.4/54800 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:35952/SOURCE02?view=true.
Council of Science Editors:
Duell M. Strategic Traffic Assignment: Models and Applications to Capture Day-to-Day Flow Volatility. [Doctoral Dissertation]. University of New South Wales; 2015. Available from: http://handle.unsw.edu.au/1959.4/54800 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:35952/SOURCE02?view=true
9.
Dalosto, Francisco Marchet.
Avaliação de indicadores de desempenho na análise de importância de segmentos de uma rede viária.
Degree: 2018, Brazil
URL: http://hdl.handle.net/10183/180876
► A identificação dos segmentos críticos da rede viária é um conhecimento básico que todo planejador de transportes deve ter sobre a rede viária. É inevitável…
(more)
▼ A identificação dos segmentos críticos da rede viária é um conhecimento básico que todo planejador de transportes deve ter sobre a rede viária. É inevitável a ocorrência de incidentes e eventos de redução da capacidade nos elementos da rede. O efeito de acidentes e obstruções em segmentos críticos da rede ocasionam impactos que prejudicam o desempenho da rede. Este estudo foi desenvolvido com o apoio do modelo de alocação de tráfego do software VISUM (versão 2015) e propõe um método para determinar a importância de cada segmento da rede viária, a identificação de segmentos críticos da rede e a avaliação de sua obstrução de forma estática e dinâmica. Para isso, são utilizados diversos indicadores de desempenho da rede viária. O método foi aplicado na região do Litoral Norte do Rio Grande do Sul, utilizando os dados de tráfego fornecidos pela CONCEPA TRIUNFO, DAER e DNIT. A determinação da importância de cada segmento decorreu da avaliação do impacto
na rede causado pela obstrução do próprio segmento. Através do método proposto neste estudo foi possível identificar o segmento crítico da rede viária estudada e, de forma qualitativa, verificar a extensão da obstrução desse segmento nas análises estática e dinâmica Verificou-se que o indicador diferença do total de tempo despendido na rede é o indicador que mais apresenta crescimento com o incremento da demanda, não apresenta alterações de priorização dos segmentos frente a variações de intensidade e sentido da demanda. Os resultados deste estudo mostraram que o segmento crítico da rede pertence a BR-101 entre os municípios de Osório e Terra de Areia. O método de hierarquização proposto independe do sentido e da intensidade da demanda, e está sujeito a mais de uma métrica para avaliar o segmento crítico. Estes resultados podem subsidiar o planejamento de transportes, identificando trechos críticos da rede viária que necessitam de mais atenção dos gestores e apontando medidas de
operação no caso de eventos disruptivos nos trechos críticos.
Identifying the most important link of the network is essential knowledge that the transport planners should have over the network. Incidents and events of capacity reduction in network elements are inevitable. The effect of accidents and obstructions on critical network links causes impacts that hamper network performance. This study was developed with support of VISUM (version 2015) traffic assignment model software with proposes a method to determinate each network link importance level, to identify the critical link and to measure the critical link blockage impact on network. For this, several road network performance indicators are used. The method was applied in the North Coast region of Rio Grande do Sul, using traffic data provided by CONCEPA TRIUNFO, DAER and DNIT. The link level importance in define from the own link impact due its obstruction. The proposed method identified the most critical link of the
studied network and verified the qualitative impact of its obstruction extent in the static and dynamic assignment…
Advisors/Committee Members: Cybis, Helena Beatriz Bettella.
Subjects/Keywords: Avaliação de desempenho; Rodovias; Litoral Norte, Região (RS); Network analysis; Link importance; Static traffic assignment; Dynamic traffic assignment
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Dalosto, F. M. (2018). Avaliação de indicadores de desempenho na análise de importância de segmentos de uma rede viária. (Masters Thesis). Brazil. Retrieved from http://hdl.handle.net/10183/180876
Chicago Manual of Style (16th Edition):
Dalosto, Francisco Marchet. “Avaliação de indicadores de desempenho na análise de importância de segmentos de uma rede viária.” 2018. Masters Thesis, Brazil. Accessed April 12, 2021.
http://hdl.handle.net/10183/180876.
MLA Handbook (7th Edition):
Dalosto, Francisco Marchet. “Avaliação de indicadores de desempenho na análise de importância de segmentos de uma rede viária.” 2018. Web. 12 Apr 2021.
Vancouver:
Dalosto FM. Avaliação de indicadores de desempenho na análise de importância de segmentos de uma rede viária. [Internet] [Masters thesis]. Brazil; 2018. [cited 2021 Apr 12].
Available from: http://hdl.handle.net/10183/180876.
Council of Science Editors:
Dalosto FM. Avaliação de indicadores de desempenho na análise de importância de segmentos de uma rede viária. [Masters Thesis]. Brazil; 2018. Available from: http://hdl.handle.net/10183/180876
10.
MARTINEZ-PASTOR, BEATRIZ.
Resilience of Traffic Networks to Extreme Weather Events: Analysis and Assessment.
Degree: School of Engineering. Disc of Civil Structural & Environmental Eng, 2018, Trinity College Dublin
URL: http://hdl.handle.net/2262/83480
► The increment of extreme weather events is creating larger, and more frequent problems among infrastructure systems worldwide. In this thesis, the focus is on traffic…
(more)
▼ The increment of extreme weather events is creating larger, and more frequent problems among infrastructure systems worldwide. In this thesis, the focus is on
traffic networks by the analysis of a recent concept, the resilience. This concept evaluates the impact that perturbations create on
traffic networks from the beginning of the perturbation until the total recovery. Due to the novelty of the concept in the Transport area, this thesis aims to develop new mathematical tools in order to quantify, and understand this concept in
traffic networks.
Following the previous objective, this thesis provides the reader with the following
contributions:
Literature review. A literature review about existing definitions, and methodologies
to evaluate resilience in transport networks is presented, together with an analysis of the existing
traffic assignment models, and travel cost functions. In addition, a literature review of methodologies for the identification of critical, and vulnerable links is included.
A dynamic restricted equilibrium
assignment model. A methodology to evaluate resilience in
traffic networks is presented, based on a new dynamic restricted equilibrium
assignment model, which evaluates not only the evolution of the cost level during the whole evolution of the perturbation, but also the stress suffered by the network users due to the changes in the travel conditions. In addition, formulations to evaluate the perturbation, and the recovery resilience are introduced.
A bounded link travel cost function. A new link travel cost function which
explicitly considers the effects of weather events in
traffic networks is introduced, including not only a parameter to determine the intensity of the hazard, but also a parameter to include the local vulnerability of each link when the perturbation occurs.
A mapping, and a bi-phase sensitivity analysis. A bi-phase sensitivity analysis
of the parameters included in the proposed method to evaluate resilience, including local approach (OAT), and a global approach (Latin Hypercube) is presented. The statistical approach implemented allows its use in complex models by reducing the number of points needed for the analysis, with the consequent time saving.
Methodologies to identify critical, and vulnerable links. Novel methodologies
to identify, and rank the links of
traffic networks by their vulnerability, and also by their criticality are presented. The methods are based in the analysis of the Fisher Information Matrix, and its eigenvalues and eigenvectors. In addition, this methodology is extended for the identification of vulnerable, and critical areas of a
traffic network.
Practical applications. The proposed methodologies are tested in examples, and
real
traffic networks in order to show their performance, and characteristics. In addition, the presented examples allow the validation of the results, and the associated computational requirements.
Advisors/Committee Members: O'Connor, Alan, Nogal, Maria.
Subjects/Keywords: Resilience; Traffic network; Weather event; Traffic assignment model; Sensitivity analysis; Travel time cost function
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
MARTINEZ-PASTOR, B. (2018). Resilience of Traffic Networks to Extreme Weather Events: Analysis and Assessment. (Thesis). Trinity College Dublin. Retrieved from http://hdl.handle.net/2262/83480
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
MARTINEZ-PASTOR, BEATRIZ. “Resilience of Traffic Networks to Extreme Weather Events: Analysis and Assessment.” 2018. Thesis, Trinity College Dublin. Accessed April 12, 2021.
http://hdl.handle.net/2262/83480.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
MARTINEZ-PASTOR, BEATRIZ. “Resilience of Traffic Networks to Extreme Weather Events: Analysis and Assessment.” 2018. Web. 12 Apr 2021.
Vancouver:
MARTINEZ-PASTOR B. Resilience of Traffic Networks to Extreme Weather Events: Analysis and Assessment. [Internet] [Thesis]. Trinity College Dublin; 2018. [cited 2021 Apr 12].
Available from: http://hdl.handle.net/2262/83480.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
MARTINEZ-PASTOR B. Resilience of Traffic Networks to Extreme Weather Events: Analysis and Assessment. [Thesis]. Trinity College Dublin; 2018. Available from: http://hdl.handle.net/2262/83480
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
11.
Levin, Michael William.
Modeling and optimizing network infrastructure for autonomous vehicles.
Degree: PhD, Civil Engineering, 2017, University of Texas – Austin
URL: http://hdl.handle.net/2152/47311
► Autonomous vehicle (AV) technology has matured sufficiently to be in testing on public roads. However, traffic models of AVs are still in development. Most previous…
(more)
▼ Autonomous vehicle (AV) technology has matured sufficiently to be in testing on public roads. However,
traffic models of AVs are still in development. Most previous work has studied AV technologies in micro-simulation. The purpose of this dissertation is to model and optimize AV technologies for large city networks to predict how AVs might affect city
traffic patterns and travel behaviors. To accomplish these goals, we construct a dynamic network loading model for AVs, consisting of link and node models of AV technologies, which is used to calculate time-dependent travel times in dynamic
traffic assignment. We then study several applications of the dynamic network loading to predict how AVs might affect travel demand and
traffic congestion. AVs admit reduced perception-reaction times through technologies such as (cooperative) adaptive cruise control, which can reduce following headways and increase capacity. Previous work has studied these in micro-simulation, but we construct a mesoscopic simulation model for analyses on large networks. To study scenarios with both autonomous and conventional vehicles, we modify the kinematic wave theory to include multiple classes of flow. The flow-density relationship also changes in space and time with the class proportions. We present multiclass cell transmission model and prove that it is a Godunov approximation to the multiclass kinematic wave theory. We also develop a car-following model to predict the fundamental diagram at arbitrary proportions of AVs. Complete market penetration scenarios admit dynamic lane reversal – changing lane direction at high frequencies to more optimally allocate road capacity. We develop a kinematic wave theory in which the number of lanes changes in space and time, and approximately solve it with a cell transmission model. We study two methods of determining lane direction. First, we present a mixed integer linear program for system optimal dynamic
traffic assignment. Since this program is computationally difficult to solve, we also study dynamic lane reversal on a single link with deterministic and stochastic demands. The resulting policy is shown to significantly reduce travel times on a city network. AVs also admit reservation-based intersection control, which can make greater use of intersection capacity than
traffic signals. AVs communicate with the intersection manager to reserve space-time paths through the intersection. We create a mesoscopic node model by starting with the conflict point variant of reservations and aggregating conflict points into capacity-constrained conflict regions. This model yields an integer program that can be adapted to arbitrary objective functions. To motivate optimization, we present several examples on theoretical and realistic networks demonstrating that naïve reservation policies can perform worse than
traffic signals. These occur due to asymmetric intersections affecting optimal capacity allocation and/or user equilibrium route choice behavior. To improve reservations, we adapt the decentralized…
Advisors/Committee Members: Boyles, Stephen David, 1982- (advisor), Claudel, Christian G (committee member), Kockelman, Kara M (committee member), Stone, Peter (committee member), Hasenbein, John J (committee member).
Subjects/Keywords: Autonomous vehicles; Dynamic traffic assignment; Traffic flow; Dynamic lane reversal; Reservation-based intersection control
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Levin, M. W. (2017). Modeling and optimizing network infrastructure for autonomous vehicles. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/47311
Chicago Manual of Style (16th Edition):
Levin, Michael William. “Modeling and optimizing network infrastructure for autonomous vehicles.” 2017. Doctoral Dissertation, University of Texas – Austin. Accessed April 12, 2021.
http://hdl.handle.net/2152/47311.
MLA Handbook (7th Edition):
Levin, Michael William. “Modeling and optimizing network infrastructure for autonomous vehicles.” 2017. Web. 12 Apr 2021.
Vancouver:
Levin MW. Modeling and optimizing network infrastructure for autonomous vehicles. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2017. [cited 2021 Apr 12].
Available from: http://hdl.handle.net/2152/47311.
Council of Science Editors:
Levin MW. Modeling and optimizing network infrastructure for autonomous vehicles. [Doctoral Dissertation]. University of Texas – Austin; 2017. Available from: http://hdl.handle.net/2152/47311

University of Hong Kong
12.
Cheung, Wing-man.
Dynamic traffic assignment
for congested highway network.
Degree: 2001, University of Hong Kong
URL: http://hdl.handle.net/10722/56026
Subjects/Keywords: Traffic
assignment - Mathematical models.
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Cheung, W. (2001). Dynamic traffic assignment
for congested highway network. (Thesis). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/56026
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Cheung, Wing-man. “Dynamic traffic assignment
for congested highway network.” 2001. Thesis, University of Hong Kong. Accessed April 12, 2021.
http://hdl.handle.net/10722/56026.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Cheung, Wing-man. “Dynamic traffic assignment
for congested highway network.” 2001. Web. 12 Apr 2021.
Vancouver:
Cheung W. Dynamic traffic assignment
for congested highway network. [Internet] [Thesis]. University of Hong Kong; 2001. [cited 2021 Apr 12].
Available from: http://hdl.handle.net/10722/56026.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Cheung W. Dynamic traffic assignment
for congested highway network. [Thesis]. University of Hong Kong; 2001. Available from: http://hdl.handle.net/10722/56026
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Hong Kong University of Science and Technology
13.
Szeto, Wai Yuen.
Dynamic traffic assignment : formulations, properties, and extensions.
Degree: 2003, Hong Kong University of Science and Technology
URL: http://repository.ust.hk/ir/Record/1783.1-1695
;
https://doi.org/10.14711/thesis-b805492
;
http://repository.ust.hk/ir/bitstream/1783.1-1695/1/th_redirect.html
► Dynamic Traffic Assignment (DTA), which is to determine the network traffic pattern over time as a result of dynamic supply and demand interactions, is an…
(more)
▼ Dynamic Traffic Assignment (DTA), which is to determine the network traffic pattern over time as a result of dynamic supply and demand interactions, is an important research area because DTA models have a wide range of applications in 1) real-time traffic control and management, and 2) off-line network planning and policy evaluations. Essentially, DTA consists of two components: a travel choice principle and a traffic-flow component. The travel choice principle models how travelers decide on whether to travel or not, and if so, how they select their routes, departure times, modes, or destinations. The traffic-flow component, on the other hand, depicts how traffic propagates inside a transport network. This thesis develops three general frameworks for DTA problems through the nonlinear complementarity problem approach, the variational inequality problem approach, and the fixed-point problem approach. Rather than considering traffic dynamics or the traffic-flow component as constraints, as is typically accomplished in the literature, the proposed frameworks model traffic through a unique mapping of route flows directly. This approach opens up a new way to analyze DTA problems. These frameworks allow the encapsulation of a range of dynamic traffic flow models and can be solved by many existing solution methods. For the traffic-flow component, this thesis reviews and compares two modeling paradigms for DTA purposes: point-queue and physical-queue paradigms, and depicts existing dynamic traffic-flow modeling approaches under each modeling paradigm, including their advantages and disadvantages. A numerical study is performed to demonstrate their different travel time predictions, time-dependent queuing locations, and time-dependent link occupancies. This thesis also investigates and discusses the implications of the properties of point-queue and physical-queue DTA problems, in the areas of causality, the continuity, differentiability, and monotone properties of route travel times, the existence and uniqueness of solutions, the first-in-first-out properties, and the continuity property of origin-destination travel times. In particular, this thesis proves that the existence of solutions to the DTA problems with physical queues is not guaranteed. This could be problematic because most existing planning and management procedures are developed under the equilibrium notion. Nevertheless, this finding may prove to be important in the search of new travel choice principles that are behaviorally sound and consistent with actual network behavior. Finally, based on the notion of bounded-rationality, this thesis proposes the tolerance-based Dynamic User Optimal (DUO) principle that includes the DUO principle as a special case. This new principle is behaviorally sound and consistent with actual traffic behavior. Based on the theoretical gap, the condition for the existence of solutions to the problem is provided. Two new design methods are proposed and discussed. Numerical examples are provided to illustrate the effects of…
Subjects/Keywords: Traffic assignment – Mathematical models
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Szeto, W. Y. (2003). Dynamic traffic assignment : formulations, properties, and extensions. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-1695 ; https://doi.org/10.14711/thesis-b805492 ; http://repository.ust.hk/ir/bitstream/1783.1-1695/1/th_redirect.html
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Szeto, Wai Yuen. “Dynamic traffic assignment : formulations, properties, and extensions.” 2003. Thesis, Hong Kong University of Science and Technology. Accessed April 12, 2021.
http://repository.ust.hk/ir/Record/1783.1-1695 ; https://doi.org/10.14711/thesis-b805492 ; http://repository.ust.hk/ir/bitstream/1783.1-1695/1/th_redirect.html.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Szeto, Wai Yuen. “Dynamic traffic assignment : formulations, properties, and extensions.” 2003. Web. 12 Apr 2021.
Vancouver:
Szeto WY. Dynamic traffic assignment : formulations, properties, and extensions. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2003. [cited 2021 Apr 12].
Available from: http://repository.ust.hk/ir/Record/1783.1-1695 ; https://doi.org/10.14711/thesis-b805492 ; http://repository.ust.hk/ir/bitstream/1783.1-1695/1/th_redirect.html.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Szeto WY. Dynamic traffic assignment : formulations, properties, and extensions. [Thesis]. Hong Kong University of Science and Technology; 2003. Available from: http://repository.ust.hk/ir/Record/1783.1-1695 ; https://doi.org/10.14711/thesis-b805492 ; http://repository.ust.hk/ir/bitstream/1783.1-1695/1/th_redirect.html
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Hong Kong University of Science and Technology
14.
An, Kun.
Transit network design with stochastic demand.
Degree: 2014, Hong Kong University of Science and Technology
URL: http://repository.ust.hk/ir/Record/1783.1-70880
;
https://doi.org/10.14711/thesis-b1334195
;
http://repository.ust.hk/ir/bitstream/1783.1-70880/1/th_redirect.html
► The transit network design problem (TNDP) arises in the rail, bus and ferry industries. It requires the joint determination of the service or carrier network…
(more)
▼ The transit network design problem (TNDP) arises in the rail, bus and ferry industries. It requires the joint determination of the service or carrier network and the commodity flows to achieve certain objective, such as minimum cost, maximum revenue, etc. It has been well recognized that the stochastic nature of demand has a substantial impact on the service design patterns. Integrating the consideration of uncertain demand into the TNDP can lead to robust and cost-effective service network designs which not only provide reliable services to passengers, but also reduce the expected cost for the operating companies. This thesis focuses on the tactical planning methodology for the TNDP with stochastic demand. To address demand uncertainty, two types of services are introduced: Fixed Route Transit (FRT) and Demand Responsive Transit (DRT). FRT is operated with a fixed schedule, while DRT is only called upon to accommodate demand overflow, which typically has a higher unit cost. In this research, the TNDP is formulated as a two stage mixed-integer stochastic problem with capacity constraints. This thesis draws upon the concept of regular service reliability (SR); i.e. the FRT is designed to be sufficient to cover the demand up to a certain specified SR. This approach reduces the otherwise difficult 2-stage stochastic problem into two phases that can be solved iteratively. For a specific SR, Phase-1 determines the deployment of FRT which covers the demand up to a specific SR, and Phase-2 determines the DRT capacity to accommodate the realized demand that exceeds the capacity of the FRT. In determining the SR, the expected cost arising from the DRT must be duly considered. The key is to determine the SR of the FRT in order to minimize the expected system cost under stochastic demand. The level of SR internalizes the tradeoff between these two types of services. The final optimal solution is obtained by conducting a gradient search to obtain the optimal SR. Other than providing a performance characterization for the FRT, the term SR allows decoupling the computations of the FRT schedule and DRT deployment, leading to substantial gains in computational efficiency. Two passenger flow patterns, system optimal (SO) and user equilibrium (UE) are investigated separately. With the notion of SR, a linear programming (LP) approach is formulated to deal with the great challenges in the encapsulation of stochastic demand, equilibrium constraints and hard capacity constraints simultaneously, through treating the negative Lagrange multiplier associated with the capacity constraint as the extra delay caused by passenger overload. The SR-based formulation and the gradient algorithm are then applied to one actual ferry network scheduling problem in Hong Kong with promising results. Compared to existing stochastic methods, this approach leads to substantial computation time savings. To evaluate the benefits of passenger reservation, two DRT provision schemes are investigated based on whether the demand information is acquired in advance by…
Subjects/Keywords: Local transit
; Planning
; Mathematical models
; Traffic assignment
; Ferry routes
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
An, K. (2014). Transit network design with stochastic demand. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-70880 ; https://doi.org/10.14711/thesis-b1334195 ; http://repository.ust.hk/ir/bitstream/1783.1-70880/1/th_redirect.html
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
An, Kun. “Transit network design with stochastic demand.” 2014. Thesis, Hong Kong University of Science and Technology. Accessed April 12, 2021.
http://repository.ust.hk/ir/Record/1783.1-70880 ; https://doi.org/10.14711/thesis-b1334195 ; http://repository.ust.hk/ir/bitstream/1783.1-70880/1/th_redirect.html.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
An, Kun. “Transit network design with stochastic demand.” 2014. Web. 12 Apr 2021.
Vancouver:
An K. Transit network design with stochastic demand. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2014. [cited 2021 Apr 12].
Available from: http://repository.ust.hk/ir/Record/1783.1-70880 ; https://doi.org/10.14711/thesis-b1334195 ; http://repository.ust.hk/ir/bitstream/1783.1-70880/1/th_redirect.html.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
An K. Transit network design with stochastic demand. [Thesis]. Hong Kong University of Science and Technology; 2014. Available from: http://repository.ust.hk/ir/Record/1783.1-70880 ; https://doi.org/10.14711/thesis-b1334195 ; http://repository.ust.hk/ir/bitstream/1783.1-70880/1/th_redirect.html
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology
15.
Li, Ke (author).
Dynamic traffic assignment model for inland waterway freight transport.
Degree: 2017, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:e8b5b0f6-c1fd-43b2-86da-c124bb8ea4de
► Due to the rapid increase of global trade and deepening integration within the European Union (EU), freight transport across the EU has had relatively fast…
(more)
▼ Due to the rapid increase of global trade and deepening integration within the European Union (EU), freight transport across the EU has had relatively fast growth. However, constraints of transport infrastructure, interoperability and governance issues do slow down the developments of freight transport. There is a need for transport planning models to support the growth of freight transport, especially in inland waterways. Currently, the inland waterways freight transport planning models used by EU governments like Germany, Belgium, France and The Netherlands are mostly static. In static models, evaluations are done under normal, static conditions, on an annual basis, ignoring the dynamics in freight. This research presents a dynamic model for Dutch freight transport via inland waterways. The Dutch inland waterways are interpreted as a network. Freight shipments are assigned to the network in a dynamic way, with the goal of minimizing the travel time. To achieve this, the research comprises a network model and the corresponding mathematical model. The network model includes the main infrastructures of the waterways, such as bridges, locks and ports. Whereas the mathematical model includes a time-dependent shortest path algorithm, a network loading process and a path adjustment algorithm. The model is validated by simulating historical data and by comparing the results with those from a static model. Several scenarios are given to illustrate uses of the DTA model.
Transport Engineering and Logistics
Advisors/Committee Members: Negenborn, Rudy (mentor), Chen, Linying (mentor), Burgess, Arnaud (mentor), Delft University of Technology (degree granting institution).
Subjects/Keywords: dynamic traffic assignment; inland waterways; Simulation; freight transport
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Li, K. (. (2017). Dynamic traffic assignment model for inland waterway freight transport. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:e8b5b0f6-c1fd-43b2-86da-c124bb8ea4de
Chicago Manual of Style (16th Edition):
Li, Ke (author). “Dynamic traffic assignment model for inland waterway freight transport.” 2017. Masters Thesis, Delft University of Technology. Accessed April 12, 2021.
http://resolver.tudelft.nl/uuid:e8b5b0f6-c1fd-43b2-86da-c124bb8ea4de.
MLA Handbook (7th Edition):
Li, Ke (author). “Dynamic traffic assignment model for inland waterway freight transport.” 2017. Web. 12 Apr 2021.
Vancouver:
Li K(. Dynamic traffic assignment model for inland waterway freight transport. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Apr 12].
Available from: http://resolver.tudelft.nl/uuid:e8b5b0f6-c1fd-43b2-86da-c124bb8ea4de.
Council of Science Editors:
Li K(. Dynamic traffic assignment model for inland waterway freight transport. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:e8b5b0f6-c1fd-43b2-86da-c124bb8ea4de

Delft University of Technology
16.
Chaniotakis, E. (author).
Parking Behavioural and Assignment Modelling: Methodology and application for the evaluation of Smart Parking applications.
Degree: 2014, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:9450f7ed-d730-461f-8552-e47fe9f1fd5f
► This research focuses on the derivation of an assignment model that can be used for the evaluation of Smart Parking ITS applications. Behavioural research is…
(more)
▼ This research focuses on the derivation of an assignment model that can be used for the evaluation of Smart Parking ITS applications. Behavioural research is conducted in order to gain understanding of the individuals' behaviour concerning parking, on three behavioural levels (Strategic, Operational and Tactical), and for two user classes (Familiar and Unfamiliar users). A Parking Decision Process model, which represent the decisions that individuals have to take when parking is suggested. A Stated Preference experiment is conducted – designed using efficient designs – for the investigation of decisions for familiar and unfamiliar users and discrete choice models are derived for familiar users. The outcome of the behavioural research (Parking Decision Process model \& MNL Parking Discrete Choice model) is applied in the development of a Parking Assignment Model for simulation on the behavioural levels for both user classes. The components of the Parking Assignment Model are verified and the applicability of the model is examined. Finally, the Parking Assignment Model is applied for the evaluation of the Smart Parking application, developed for the Sensor City project in Assen. The results of the evaluation illustrate the positive impact of the Smart Parking application to the reduction of individuals' and total travel times.
Transport Infrastructure and Logistics
Transport & Planning
Delft University of Technology
Advisors/Committee Members: Pel, A. (mentor), Van Arem, B. (mentor), Riender, H. (mentor).
Subjects/Keywords: Parking Modelling; Traffic Assignment with parking; Parking behaviour
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Chaniotakis, E. (. (2014). Parking Behavioural and Assignment Modelling: Methodology and application for the evaluation of Smart Parking applications. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:9450f7ed-d730-461f-8552-e47fe9f1fd5f
Chicago Manual of Style (16th Edition):
Chaniotakis, E (author). “Parking Behavioural and Assignment Modelling: Methodology and application for the evaluation of Smart Parking applications.” 2014. Masters Thesis, Delft University of Technology. Accessed April 12, 2021.
http://resolver.tudelft.nl/uuid:9450f7ed-d730-461f-8552-e47fe9f1fd5f.
MLA Handbook (7th Edition):
Chaniotakis, E (author). “Parking Behavioural and Assignment Modelling: Methodology and application for the evaluation of Smart Parking applications.” 2014. Web. 12 Apr 2021.
Vancouver:
Chaniotakis E(. Parking Behavioural and Assignment Modelling: Methodology and application for the evaluation of Smart Parking applications. [Internet] [Masters thesis]. Delft University of Technology; 2014. [cited 2021 Apr 12].
Available from: http://resolver.tudelft.nl/uuid:9450f7ed-d730-461f-8552-e47fe9f1fd5f.
Council of Science Editors:
Chaniotakis E(. Parking Behavioural and Assignment Modelling: Methodology and application for the evaluation of Smart Parking applications. [Masters Thesis]. Delft University of Technology; 2014. Available from: http://resolver.tudelft.nl/uuid:9450f7ed-d730-461f-8552-e47fe9f1fd5f

University of Minnesota
17.
Di, Xuan.
Boundedly rational user equilibrium: models and applications.
Degree: PhD, Civil Engineering, 2014, University of Minnesota
URL: http://hdl.handle.net/11299/167058
► Efficient transportation management requires good understanding of people's travel behavior. Most transportation planning models assume travelers are perfectly rational in decision-making. However, much of the…
(more)
▼ Efficient transportation management requires good understanding of people's travel behavior. Most transportation planning models assume travelers are perfectly rational in decision-making. However, much of the empirical evidence from psychology, economics, and transportation has shown that perfect rationality is not realistic in modeling travelers' decision-making process. Thus existing transportation planning models may provide inaccurate predictions to transportation planners. Motivated by travelers' route choice changes in response to the reopening of the I-35W Bridge in Minneapolis, this dissertation shows that travelers are boundedly rational (BR) in making route choices. Though the BR travel behavioral model was proposed in the 1980's, empirical validation of such behavioral principle using real-world data along with a theoretical framework was non-existent. This study is dedicated to bridging these gaps from both empirical and theoretical perspectives.The first contribution of this dissertation is the empirical verification and estimation of boundedly rational route choice behavior. By analyzing recorded GPS trajectories from 143 commuters before and after the reopening of the I-35W Bridge in Minneapolis, we employ a probit model to estimate the bounded rationality parameters in Twin Cities. Despite the behavioral appeal of bounded rationality, a rigorous study of boundedly rational user equilibria (BRUE) solution has been lacking, partly due to its mathematical complexity. This research offers a systematic approach of deriving the BRUE solutions analytically on networks with fixed travel demands. Based on the definition of ε-BRUE, where ε is the indifference band for perceived travel times, we formulate the ε-BRUE problem as a nonlinear complementarity problem (NCP). With the increase of the indifference band, the path set that contains equilibrium flows will be augmented and the critical values of the indifference band to augment the path set can be identified by solving a sequence of mathematical programs with equilibrium constraints (MPEC). A novel solution method is provided to obtain the BRUE solution set and numerical examples are given to illustrate this finding. To provide guidelines to policy-makers for congestion mitigation, this research also explores an important phenomenon which should be avoided in transportation network design, i.e., Braess paradox. The classical Braess paradox was built upon the perfectly rational behavioral assumption. Under the framework of bounded rationality, each equilibrium flow pattern leads to a different total system travel time, resulting in non-unique network performance measures. Because of the non-uniqueness of BRUE solutions, which particular equilibrium pattern should be used to compare network performances before and after new roads are built remains a question. This dissertation aims to study the analytical properties of Braess paradox under bounded rationality by exploring the relationships between the occurrence of Braess paradox and the…
Subjects/Keywords: Bounded rationality; Route choice; Traffic assignment; User equilibrium; Civil engineering
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Di, X. (2014). Boundedly rational user equilibrium: models and applications. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/167058
Chicago Manual of Style (16th Edition):
Di, Xuan. “Boundedly rational user equilibrium: models and applications.” 2014. Doctoral Dissertation, University of Minnesota. Accessed April 12, 2021.
http://hdl.handle.net/11299/167058.
MLA Handbook (7th Edition):
Di, Xuan. “Boundedly rational user equilibrium: models and applications.” 2014. Web. 12 Apr 2021.
Vancouver:
Di X. Boundedly rational user equilibrium: models and applications. [Internet] [Doctoral dissertation]. University of Minnesota; 2014. [cited 2021 Apr 12].
Available from: http://hdl.handle.net/11299/167058.
Council of Science Editors:
Di X. Boundedly rational user equilibrium: models and applications. [Doctoral Dissertation]. University of Minnesota; 2014. Available from: http://hdl.handle.net/11299/167058

University of Windsor
18.
Anis, Sidra.
Microsimulating Cross-Border Truck Movements between Ontario and the United States: An Application using Connected Vehicle Technology.
Degree: MA, Civil and Environmental Engineering, 2019, University of Windsor
URL: https://scholar.uwindsor.ca/etd/8159
► The land-border crossings between Canada and the United States facilitate over half of the goods transported between the two countries. Since trucks are the primary…
(more)
▼ The land-border crossings between Canada and the United States facilitate over half of the goods transported between the two countries. Since trucks are the primary mode of transportation for the movement of these goods, studying the
traffic flows and the characteristics of border crossings is of paramount importance for decision makers, planners and researchers. The province of Ontario is home to the busiest border crossings in Canada including the Ambassador Bridge in Windsor, Ontario and the Blue Water Bridge in Sarnia, Ontario. GPS data collected from a large sample of trucks shows the route choice characteristics for these border crossings. The same dataset also shows the destination locations for these trucks. This thesis utilizes VISSIM, a microscopic
traffic simulator, and its dynamic
traffic assignment, an imbedded route choice model, to replicate these route choice conditions. Once the model is validated with the shares of flows from the observed (i.e., reference) datasets, the route choice behavior is analyzed under different delay conditions. The research also analyzed the effects of connected vehicle technology, at different penetration rates, on the efficiency of border crossing operations. As the connected vehicles increased in the
traffic stream, it was observed that
traffic was more streamlined and would switch to use the Blue Water Bridge during the simulation of an incident on Highway 401. The penetration rate was increased in 20% increments and with 100% penetration, 7% of total truck
traffic had switched to Blue Water Bridge to travel to their U.S. destination.
Advisors/Committee Members: Hanna Maoh.
Subjects/Keywords: Civil Engineering; Connected Vehicle; Dynamic Traffic Assignment; Microsimulation; Transportation; VISSIM
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Anis, S. (2019). Microsimulating Cross-Border Truck Movements between Ontario and the United States: An Application using Connected Vehicle Technology. (Masters Thesis). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/8159
Chicago Manual of Style (16th Edition):
Anis, Sidra. “Microsimulating Cross-Border Truck Movements between Ontario and the United States: An Application using Connected Vehicle Technology.” 2019. Masters Thesis, University of Windsor. Accessed April 12, 2021.
https://scholar.uwindsor.ca/etd/8159.
MLA Handbook (7th Edition):
Anis, Sidra. “Microsimulating Cross-Border Truck Movements between Ontario and the United States: An Application using Connected Vehicle Technology.” 2019. Web. 12 Apr 2021.
Vancouver:
Anis S. Microsimulating Cross-Border Truck Movements between Ontario and the United States: An Application using Connected Vehicle Technology. [Internet] [Masters thesis]. University of Windsor; 2019. [cited 2021 Apr 12].
Available from: https://scholar.uwindsor.ca/etd/8159.
Council of Science Editors:
Anis S. Microsimulating Cross-Border Truck Movements between Ontario and the United States: An Application using Connected Vehicle Technology. [Masters Thesis]. University of Windsor; 2019. Available from: https://scholar.uwindsor.ca/etd/8159

University of Southern California
19.
Xu, Huayu.
Traffic assignment models for a ridesharing transportation
market.
Degree: PhD, Industrial and Systems Engineering, 2014, University of Southern California
URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/440133/rec/7554
► A nascent ridesharing industry is being enabled by new communication technologies and motivated by its many possible benefits, such as reduction in travel cost, pollution,…
(more)
▼ A nascent ridesharing industry is being enabled by new
communication technologies and motivated by its many possible
benefits, such as reduction in travel cost, pollution, and
congestion. Understanding the complex relations between ridesharing
and
traffic congestion is a critical step in the evaluation of a
ridesharing enterprise or of the usefulness of regulatory policies
or incentives to promote ridesharing. In this research, we propose
two new
traffic assignment models that explicitly represent
ridesharing as a mode of transportation. The objective is to
analyze how ridesharing impacts
traffic congestion, how people can
be motivated to participate in ridesharing, and conversely, how
congestion influences ridesharing, including ridesharing prices and
the number of drivers and passengers. ❧ The first model considers
the scenario where drivers and passengers sharing the same ride
must travel from the same origin and to the same destination. This
model is built by combining a ridesharing market model with a
classic elastic demand Wardrop
traffic equilibrium model. It is
formulated as a convex optimization problem. The Frank‐Wolfe
algorithm is adopted to solve the model and a heuristic approach is
applied using the equilibrium condition. Our computational results
show that: (1) the ridesharing base price influences the congestion
level, (2) within a certain price range, an increase in the price
may reduce the
traffic congestion, and (3) the utilization of
ridesharing increases as the congestion increases. ❧ The second
model drops the constraint of the same origin‐destination (OD)
pair. In this model, drivers may pick up or drop off any passenger
in the middle of their trips, and they may even detour from a
seemingly shortest path. In order to describe this scenario, we
extend the network by doubling the nodes and tripling the arcs in
size. A generalized user equilibrium is defined to represent the
new network and the new constraints. The generalized user
equilibrium can be formulated as a mixed complementarity problem
(MiCP), and equivalently a variational inequality. It is proved
that there exists one and only one solution to this model. The
KNITRO solver is adopted to solve the MiCP and the computational
results are promising. It can be concluded from the results that
when the congestion cost decreases or the ridesharing inconvenience
cost increases, more travelers would become solo drivers and thus
less people would participate in ridesharing. On the other hand,
when the ridesharing price increases, more travelers would become
ridesharing drivers. ❧ In conclusion, the
traffic congestion, the
ridesharing cost, and the number of travelers interact with each
other closely in both models. Understanding their relationships
enables planners to develop policies to draw more people to
participate in ridesharing and thus to reduce
traffic
congestion.
Advisors/Committee Members: Dessouky, Maged M.Ordonez, FernandoOrdóñez, Fernando (Committee Chair), Pang, Jong-Shi (Committee Member), Giuliano, Genevieve (Committee Member).
Subjects/Keywords: transportation; ridesharing; traffic assignment problem; convex optimization; mixed complementarity problem
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Xu, H. (2014). Traffic assignment models for a ridesharing transportation
market. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/440133/rec/7554
Chicago Manual of Style (16th Edition):
Xu, Huayu. “Traffic assignment models for a ridesharing transportation
market.” 2014. Doctoral Dissertation, University of Southern California. Accessed April 12, 2021.
http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/440133/rec/7554.
MLA Handbook (7th Edition):
Xu, Huayu. “Traffic assignment models for a ridesharing transportation
market.” 2014. Web. 12 Apr 2021.
Vancouver:
Xu H. Traffic assignment models for a ridesharing transportation
market. [Internet] [Doctoral dissertation]. University of Southern California; 2014. [cited 2021 Apr 12].
Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/440133/rec/7554.
Council of Science Editors:
Xu H. Traffic assignment models for a ridesharing transportation
market. [Doctoral Dissertation]. University of Southern California; 2014. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/440133/rec/7554

University of Arizona
20.
Villalobos, Jorge Alejandro.
DEVELOPMENT AND IMPLEMENTATION OF THE MULTI-RESOLUTION AND LOADING OF TRANSPORTATION ACTIVITIES (MALTA) SIMULATION BASED DYNAMIC TRAFFIC ASSIGNMENT SYSTEM, RECURSIVE ON-LINE LOAD BALANCE FRAMEWORK (ROLB)
.
Degree: 2011, University of Arizona
URL: http://hdl.handle.net/10150/203446
► The Multi-resolution Assignment and Loading of Transport Activities (MALTA) system is a simulation-based Dynamic Traffic Assignment model that exploits the advantages of multi-processor computing via…
(more)
▼ The Multi-resolution
Assignment and Loading of Transport Activities (MALTA) system is a simulation-based Dynamic
Traffic Assignment model that exploits the advantages of multi-processor computing via the use of the Message Passing Interface (MPI) protocol. Spatially partitioned transportation networks are utilized to estimate travel time via alternate routes on mega-scale network models, while the concurrently run shortest path and
assignment procedures evaluate
traffic conditions and re-assign
traffic in order to achieve
traffic assignment goals such as User Optimal and/or System Optimal conditions.Performance gain is obtained via the spatial partitioning architecture that allows the simulation domains to distribute the work load based on a specially designed Recursive On-line Load Balance model (ROLB). The ROLB development describes how the transportation network is transformed into an ordered node network which serves as the basis for a minimum cost heuristic, solved using the shortest path, which solves a multi-objective NP Hard binary optimization problem. The approach to this problem contains a least-squares formulation that attempts to balance the computational load of each of the mSim domains as well as to minimize the inter-domain communication requirements. The model is developed from its formal formulation to the heuristic utilized to quickly solve the problem. As a component of the balancing model, a load forecasting technique is used, Fast Sim, to determine what the link loading of the future network in order to estimate average future link speeds enabling a good solution for the ROLB method.The runtime performance of the MALTA model is described in detail. It is shown how a 94% reduction in runtime was achieved with the Maricopa Association of Governments (MAG) network with the use of 33 CPUs. The runtime was reduced from over 60 minutes of runtime on one machine to less than 5 minutes on the 33 CPUs. The results also showed how the individual runtimes on each of the simulation domains could vary drastically with naïve partitioning methods as opposed to the balanced run-time using the ROLB method; confirming the need to have a load balancing technique for MALTA.
Advisors/Committee Members: Chiu, Yi-Chang (advisor), Hickman, Mark (committeemember), Mirchandani, Pitu (committeemember), Head, Larry (committeemember), Chiu, Yi-Chang (committeemember).
Subjects/Keywords: Partitioning;
Simulation;
Civil Engineering;
Dynamic Traffic Assignment;
Mesoscopic
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Villalobos, J. A. (2011). DEVELOPMENT AND IMPLEMENTATION OF THE MULTI-RESOLUTION AND LOADING OF TRANSPORTATION ACTIVITIES (MALTA) SIMULATION BASED DYNAMIC TRAFFIC ASSIGNMENT SYSTEM, RECURSIVE ON-LINE LOAD BALANCE FRAMEWORK (ROLB)
. (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/203446
Chicago Manual of Style (16th Edition):
Villalobos, Jorge Alejandro. “DEVELOPMENT AND IMPLEMENTATION OF THE MULTI-RESOLUTION AND LOADING OF TRANSPORTATION ACTIVITIES (MALTA) SIMULATION BASED DYNAMIC TRAFFIC ASSIGNMENT SYSTEM, RECURSIVE ON-LINE LOAD BALANCE FRAMEWORK (ROLB)
.” 2011. Doctoral Dissertation, University of Arizona. Accessed April 12, 2021.
http://hdl.handle.net/10150/203446.
MLA Handbook (7th Edition):
Villalobos, Jorge Alejandro. “DEVELOPMENT AND IMPLEMENTATION OF THE MULTI-RESOLUTION AND LOADING OF TRANSPORTATION ACTIVITIES (MALTA) SIMULATION BASED DYNAMIC TRAFFIC ASSIGNMENT SYSTEM, RECURSIVE ON-LINE LOAD BALANCE FRAMEWORK (ROLB)
.” 2011. Web. 12 Apr 2021.
Vancouver:
Villalobos JA. DEVELOPMENT AND IMPLEMENTATION OF THE MULTI-RESOLUTION AND LOADING OF TRANSPORTATION ACTIVITIES (MALTA) SIMULATION BASED DYNAMIC TRAFFIC ASSIGNMENT SYSTEM, RECURSIVE ON-LINE LOAD BALANCE FRAMEWORK (ROLB)
. [Internet] [Doctoral dissertation]. University of Arizona; 2011. [cited 2021 Apr 12].
Available from: http://hdl.handle.net/10150/203446.
Council of Science Editors:
Villalobos JA. DEVELOPMENT AND IMPLEMENTATION OF THE MULTI-RESOLUTION AND LOADING OF TRANSPORTATION ACTIVITIES (MALTA) SIMULATION BASED DYNAMIC TRAFFIC ASSIGNMENT SYSTEM, RECURSIVE ON-LINE LOAD BALANCE FRAMEWORK (ROLB)
. [Doctoral Dissertation]. University of Arizona; 2011. Available from: http://hdl.handle.net/10150/203446

Virginia Tech
21.
Irwin, Ryan.
Traffic-Aware Channel Assignment for Multi-Transceiver Wireless Networks.
Degree: PhD, Electrical and Computer Engineering, 2012, Virginia Tech
URL: http://hdl.handle.net/10919/26601
► This dissertation addresses the problem of channel assignment in multi-hop, multi-transceiver wireless networks. We investigate (1) how channels can be assigned throughout the network to…
(more)
▼ This dissertation addresses the problem of channel
assignment in multi-hop, multi-transceiver wireless networks. We investigate (1) how channels can be assigned throughout the network to ensure that the network is connected and (2) how the channel
assignment can be adapted to suit the current
traffic demands. We analyze a
traffic-aware method for channel
assignment that addresses both maintaining network connectivity and adapting the topology based on dynamic
traffic demands.
The
traffic-aware approach has one component that assigns channels independently of
traffic conditions and a second component that assigns channels in response to
traffic conditions. The
traffic-independent (TI) component is designed to allocate as few transceivers or radios as possible in order to maintain network connectivity, while limiting the aggregate interference induced by the topology. The
traffic-driven (TD) component is then designed to maximize end-to-end flow rate using the resources remaining after the TI
assignment is complete. By minimizing resources in the TI component, the TD component has more resources to adapt the topology to suit the
traffic demands and support higher end-to-end flow rate.
We investigate the fundamental tradeoff between how many resources are allocated to maintaining network connectivity versus how many resources are allocated to maximize flow rate. We show that the
traffic-aware approach achieves an appropriately balanced resource allocation, maintaining a baseline network connectivity and adapting to achieve near the maximum theoretical flow rate in the scenarios evaluated.
We develop a set of greedy, heuristic algorithms that address the problem of resource- minimized TI
assignment, the first component of the
traffic-aware
assignment. We develop centralized and distributed schemes for nodes to assign channels to their transceivers. These schemes perform well as compared to the optimal approach in the evaluation. We show that both of these schemes perform within 2% of the optimum in terms of the maximum achievable flow rate.
We develop a set of techniques for adapting the networkâ s channel
assignment based on
traffic demands, the second component of the
traffic-aware
assignment. In our approach, nodes sense
traffic conditions and adapt their own channel
assignment independently to support a high flow rate and adapt when network demand changes. We demonstrate how our distributed TI and TD approaches complement each other in an event-driven simulation.
Advisors/Committee Members: DaSilva, Luiz A. (committeechair), Reed, Jeffrey Hugh (committee member), Hou, Yiwei Thomas (committee member), Gracanin, Denis (committee member), MacKenzie, Allen B. (committeecochair).
Subjects/Keywords: Topology Control; Traffic-aware; Channel assignment; Cognitive Networks; Multi-channel Networks
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Irwin, R. (2012). Traffic-Aware Channel Assignment for Multi-Transceiver Wireless Networks. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/26601
Chicago Manual of Style (16th Edition):
Irwin, Ryan. “Traffic-Aware Channel Assignment for Multi-Transceiver Wireless Networks.” 2012. Doctoral Dissertation, Virginia Tech. Accessed April 12, 2021.
http://hdl.handle.net/10919/26601.
MLA Handbook (7th Edition):
Irwin, Ryan. “Traffic-Aware Channel Assignment for Multi-Transceiver Wireless Networks.” 2012. Web. 12 Apr 2021.
Vancouver:
Irwin R. Traffic-Aware Channel Assignment for Multi-Transceiver Wireless Networks. [Internet] [Doctoral dissertation]. Virginia Tech; 2012. [cited 2021 Apr 12].
Available from: http://hdl.handle.net/10919/26601.
Council of Science Editors:
Irwin R. Traffic-Aware Channel Assignment for Multi-Transceiver Wireless Networks. [Doctoral Dissertation]. Virginia Tech; 2012. Available from: http://hdl.handle.net/10919/26601

Virginia Tech
22.
Tarhini, Hussein Ali.
Network Models In Evacuation Planning.
Degree: PhD, Industrial and Systems Engineering, 2014, Virginia Tech
URL: http://hdl.handle.net/10919/64359
► This dissertation addresses the development and analysis of optimization models for evacuation planning. Specifically we consider the cases of large-scale regional evacuation using household vehicles…
(more)
▼ This dissertation addresses the development and analysis of optimization models for evacuation planning. Specifically we consider the cases of large-scale regional evacuation using household vehicles and hospital evacuation.
Since it is difficult to estimate the exact number of people evacuating, we first consider the case where the population size is uncertain. We review the methods studied
in the literature, mainly the strategy of using a deterministic counterpart, i.e., a single deterministic parameter to represent the uncertain population, and we show that these
methods are not very effective in generating a good
traffic management strategy. We provide alternatives, where we describe some networks where an optimal policy exist independent of the demand realization and we propose some simple heuristics for more complex ones.
Next we consider the
traffic management tools that can be generated from an evacuation plan. We start by introducing the cell transmission model with flow reduction. This model captures the flow reduction after the onset of congestion. We then discuss the management tools that can be extracted from this model. We also propose some simplification to the model formulation to enhance its tractability. A heuristic for generating a solution is also proposed, and its solution quality is analyzed.
Finally, we discuss the hospital evacuation problem where we develop an integer programming model that integrates the building evacuation with the transportation of patients. The impact of building evacuation capabilities on the transportation plan is investigated through the case of a large regional hospital case study. We also propose a decomposition scheme to improve the tractability
of the integer program.
Advisors/Committee Members: Bish, Douglas R. (committeechair), Bish, Ebru K. (committee member), Pasupathy, Raghu (committee member), Rakha, Hesham A. (committee member).
Subjects/Keywords: Cell Transmission Model (CTM); dynamic traffic assignment; evacuation planning; hospital evacuation
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❌
APA ·
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APA (6th Edition):
Tarhini, H. A. (2014). Network Models In Evacuation Planning. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/64359
Chicago Manual of Style (16th Edition):
Tarhini, Hussein Ali. “Network Models In Evacuation Planning.” 2014. Doctoral Dissertation, Virginia Tech. Accessed April 12, 2021.
http://hdl.handle.net/10919/64359.
MLA Handbook (7th Edition):
Tarhini, Hussein Ali. “Network Models In Evacuation Planning.” 2014. Web. 12 Apr 2021.
Vancouver:
Tarhini HA. Network Models In Evacuation Planning. [Internet] [Doctoral dissertation]. Virginia Tech; 2014. [cited 2021 Apr 12].
Available from: http://hdl.handle.net/10919/64359.
Council of Science Editors:
Tarhini HA. Network Models In Evacuation Planning. [Doctoral Dissertation]. Virginia Tech; 2014. Available from: http://hdl.handle.net/10919/64359

University of Georgia
23.
Zhu, Shuyuan.
Investigating the spatial and temporal changes of travel pattern between 2005 and 2010 in Beijing.
Degree: 2014, University of Georgia
URL: http://hdl.handle.net/10724/29697
► Since the economic reform of the 1980s, Beijing has been experiencing a tremendous increase in population and motorized vehicles, which brings an explosive rise in…
(more)
▼ Since the economic reform of the 1980s, Beijing has been experiencing a tremendous increase in population and motorized vehicles, which brings an explosive rise in daily travel demand. Based on the road datasets with classification in 2005
and 2010 and travel flow data aggregated by traffic analysis zones of 2005 and 2010, this study aims to analyze the spatial and temporal pattern of traveling in 2005 and 2010 in Beijing as well as the changes over the 5 years. A spatial interpolation
tool in ArcGIS was developed to interpolate travel flows to a common spatial zoning scheme, and the User Equilibrium Traffic Assignment was applied. The findings from this study will be particularly useful for transportation planners seeking information
to understand the urban spatial structure, predict travel demand and improve the transportation service and management.
Subjects/Keywords: Travel pattern; trip generation; spatial interpolation; traffic assignment
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Zhu, S. (2014). Investigating the spatial and temporal changes of travel pattern between 2005 and 2010 in Beijing. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/29697
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Zhu, Shuyuan. “Investigating the spatial and temporal changes of travel pattern between 2005 and 2010 in Beijing.” 2014. Thesis, University of Georgia. Accessed April 12, 2021.
http://hdl.handle.net/10724/29697.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Zhu, Shuyuan. “Investigating the spatial and temporal changes of travel pattern between 2005 and 2010 in Beijing.” 2014. Web. 12 Apr 2021.
Vancouver:
Zhu S. Investigating the spatial and temporal changes of travel pattern between 2005 and 2010 in Beijing. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Apr 12].
Available from: http://hdl.handle.net/10724/29697.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Zhu S. Investigating the spatial and temporal changes of travel pattern between 2005 and 2010 in Beijing. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/29697
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Sydney
24.
Raadsen, Mark.
Aggregation and decomposition methods in traffic assignment: towards consistent and efficient planning models in a multi-scale environment
.
Degree: 2018, University of Sydney
URL: http://hdl.handle.net/2123/18186
► Transport models adopt a simplified version of reality to model the movement of people within a transport system. This simplification limits the accuracy of any…
(more)
▼ Transport models adopt a simplified version of reality to model the movement of people within a transport system. This simplification limits the accuracy of any model. This research focuses on developing novel techniques that, depending on the application context, try to maximise the level of simplification given the minimum result accuracy that is required. To do so, we explore both aggregation and decomposition methods. Besides maximising simplification, we also investigate the requirements to ensure consistency between models that operate in the same spatial domain. In this, so called, multi-scale setting, it is paramount that differences in results between models can be attributed to a particular set of simplifying assumptions. To date, hardly any efforts have been made to formalise, or assess the conditions that need to be satisfied in order to achieve this much desired consistency. The focus of this work is therefore twofold; (i) exploit the combination of both model and application characteristics to achieve the best possible result with the least amount of computational burden, (ii) develop methodology to construct transport model representations in a multi-scale environment following the identified conditions that guarantee consistency between various model granularities.
Subjects/Keywords: traffic assignment;
aggregation;
decomposition;
multi-scale;
transport planning;
travel time
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Raadsen, M. (2018). Aggregation and decomposition methods in traffic assignment: towards consistent and efficient planning models in a multi-scale environment
. (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/18186
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Raadsen, Mark. “Aggregation and decomposition methods in traffic assignment: towards consistent and efficient planning models in a multi-scale environment
.” 2018. Thesis, University of Sydney. Accessed April 12, 2021.
http://hdl.handle.net/2123/18186.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Raadsen, Mark. “Aggregation and decomposition methods in traffic assignment: towards consistent and efficient planning models in a multi-scale environment
.” 2018. Web. 12 Apr 2021.
Vancouver:
Raadsen M. Aggregation and decomposition methods in traffic assignment: towards consistent and efficient planning models in a multi-scale environment
. [Internet] [Thesis]. University of Sydney; 2018. [cited 2021 Apr 12].
Available from: http://hdl.handle.net/2123/18186.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Raadsen M. Aggregation and decomposition methods in traffic assignment: towards consistent and efficient planning models in a multi-scale environment
. [Thesis]. University of Sydney; 2018. Available from: http://hdl.handle.net/2123/18186
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of New South Wales
25.
Gu, Ziyuan.
Dynamic Congestion Pricing in Urban Networks with the Network Fundamental Diagram and Simulation-Based Dynamic Traffic Assignment.
Degree: Civil & Environmental Engineering, 2019, University of New South Wales
URL: http://handle.unsw.edu.au/1959.4/61967
;
https://unsworks.unsw.edu.au/fapi/datastream/unsworks:57871/SOURCE02?view=true
► This thesis focuses on modeling and optimization of two-region urban pricing systems and analyzing and understanding the effects of pricing on the network traffic flow.…
(more)
▼ This thesis focuses on modeling and optimization of two-region urban pricing systems and analyzing and understanding the effects of pricing on the network
traffic flow. The motivation of this work is the fact that
traffic congestion is growing fast in cities around the world especially in city centers, and hence the need for an effective and efficient travel demand management (TDM) policy. With the aim of advancing the current congestion pricing theory, this thesis proposes and integrates different advanced pricing regimes with the Network Fundamental Diagram (NFD) and simulation-based dynamic
traffic assignment (DTA), studies and compares different computationally efficient simulation-based optimization (SO or SBO) methods, and analyzes and under-stands the effects of different pricing regimes on the network
traffic flow.This thesis demonstrates through computer simulations the effectiveness of a well-designed pricing system on improving the network performance. The major finding is that the distance only toll, which represents the state of the practice, naturally drives travelers into the shortest paths within the pricing zone (PZ) resulting in a more uneven distribution of congestion and hence, a larger hysteresis loop in the NFD and lower network flows especially during network recovery. This limitation is overcome by two more advanced pricing regimes, namely the joint distance and time toll (JDTT) and the joint distance and delay toll (JDDT), through the introduction of a time and a delay toll component, respectively. Moreover, this thesis explicitly models and minimizes the heterogeneity of congestion distribution as part of the toll level problem (TLP). The toll area problem (TAP) is also investigated by means of network partitioning.To optimize different pricing regimes through computer simulations, this thesis develops two computationally efficient SO frameworks. The first framework employs a proportional-integral (PI) controller from control theory to solve a simple TLP featuring a low-dimensional decision vector, a set-point objective and only bound constraints. The second framework employs regressing kriging (RK) from machine learning to solve a complex TLP that has either a high-dimensional decision vector, a complex objective, or a set of complex constraints. A comprehensive comparison between the two methods and two other widely used methods, namely simultaneous perturbation stochastic approximation (SPSA) and DIviding RECTangles (DIRECT), are performed.Overall, this thesis provides valuable insights into the study, design, and implementation of urban pricing systems and the effects of pricing on the network
traffic flow. Results of this work not only help in developing effective pricing systems to mitigate urban
traffic congestion, but also provide competitive solutions to other types of network design problems (NDPs).
Advisors/Committee Members: Saberi, Meead, Civil & Environmental Engineering, Faculty of Engineering, UNSW, Waller, S Travis, Civil & Environmental Engineering, Faculty of Engineering, UNSW.
Subjects/Keywords: Simulation-based optimization; Congestion pricing; Network fundamental diagram; Dynamic traffic assignment
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Gu, Z. (2019). Dynamic Congestion Pricing in Urban Networks with the Network Fundamental Diagram and Simulation-Based Dynamic Traffic Assignment. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/61967 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:57871/SOURCE02?view=true
Chicago Manual of Style (16th Edition):
Gu, Ziyuan. “Dynamic Congestion Pricing in Urban Networks with the Network Fundamental Diagram and Simulation-Based Dynamic Traffic Assignment.” 2019. Doctoral Dissertation, University of New South Wales. Accessed April 12, 2021.
http://handle.unsw.edu.au/1959.4/61967 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:57871/SOURCE02?view=true.
MLA Handbook (7th Edition):
Gu, Ziyuan. “Dynamic Congestion Pricing in Urban Networks with the Network Fundamental Diagram and Simulation-Based Dynamic Traffic Assignment.” 2019. Web. 12 Apr 2021.
Vancouver:
Gu Z. Dynamic Congestion Pricing in Urban Networks with the Network Fundamental Diagram and Simulation-Based Dynamic Traffic Assignment. [Internet] [Doctoral dissertation]. University of New South Wales; 2019. [cited 2021 Apr 12].
Available from: http://handle.unsw.edu.au/1959.4/61967 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:57871/SOURCE02?view=true.
Council of Science Editors:
Gu Z. Dynamic Congestion Pricing in Urban Networks with the Network Fundamental Diagram and Simulation-Based Dynamic Traffic Assignment. [Doctoral Dissertation]. University of New South Wales; 2019. Available from: http://handle.unsw.edu.au/1959.4/61967 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:57871/SOURCE02?view=true

University of New South Wales
26.
Wijayaratna, Kasun.
Modelling disrupted transport network behaviour.
Degree: Civil & Environmental Engineering, 2016, University of New South Wales
URL: http://handle.unsw.edu.au/1959.4/56658
;
https://unsworks.unsw.edu.au/fapi/datastream/unsworks:41125/SOURCE02?view=true
► Current transport modelling tools, utilised for maintenance and development of road infrastructure, assign traffic throughout a network based on traditional equilibrium concepts. These models assume…
(more)
▼ Current transport modelling tools, utilised for maintenance and development of road infrastructure, assign
traffic throughout a network based on traditional equilibrium concepts. These models assume rationality, perfect network knowledge and path cost minimisation of users. Disruptions on a road network such as
traffic incidents transform normal driving behaviour and route choice. Hence, these equilibrium concepts cannot appropriately cater for disruptions which restrict the value of the available tools.This thesis presents an investigation into driving behaviour under disrupted conditions and the subsequent development of
traffic assignment models that account for disrupted conditions. It is postulated that disruptions lead to the release of information which results in adaptive behaviour. Information can be through visual cues of the disruption itself, or provided through navigation technology and Advanced Traveller Information Systems (ATIS). Thus, the thesis focuses on two components; impacts of information on driving behaviour and the incorporation of information into network modelling.The concepts of experimental economics were used to develop two controlled laboratory experiments; the first studied the presence of information on risk attitudes of users. The findings revealed that users became risk neutral in the presence of information resulting in the overvaluation of information sources. The second experiment empirically proved the existence of an online information paradox where the provision of information results in deterioration of network performance. Neglecting these findings may affect the economic appraisal of informational infrastructure and can potentially result in erroneous planning outcomes.Principles of “User Equilibrium with Recourse” (UER) were used to develop static (Disrupted Equilibrium
Assignment with Recourse (DEAR)) and dynamic (Dynamic User Optimal with Recourse (DUOR))
traffic assignment methodologies which account for the adaptive behaviour of users in light of a disruption. Application of the models suggests an increase in system wide costs when accounting for disruptions and highlights the benefits of information provision.The core contribution of the research is the development of novel modelling techniques that incorporate adaptive behaviour associated with disruptions. Further development of these models can lead to improved assessment of reliability and vulnerability of road networks.
Advisors/Committee Members: Waller, Steven, Civil & Environmental Engineering, Faculty of Engineering, UNSW, Dixit, Vinayak, Civil & Environmental Engineering, Faculty of Engineering, UNSW.
Subjects/Keywords: Traffic Assignment,; Disrupted Networks,; Route Choice,; Adaptive Behaviour
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wijayaratna, K. (2016). Modelling disrupted transport network behaviour. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/56658 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:41125/SOURCE02?view=true
Chicago Manual of Style (16th Edition):
Wijayaratna, Kasun. “Modelling disrupted transport network behaviour.” 2016. Doctoral Dissertation, University of New South Wales. Accessed April 12, 2021.
http://handle.unsw.edu.au/1959.4/56658 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:41125/SOURCE02?view=true.
MLA Handbook (7th Edition):
Wijayaratna, Kasun. “Modelling disrupted transport network behaviour.” 2016. Web. 12 Apr 2021.
Vancouver:
Wijayaratna K. Modelling disrupted transport network behaviour. [Internet] [Doctoral dissertation]. University of New South Wales; 2016. [cited 2021 Apr 12].
Available from: http://handle.unsw.edu.au/1959.4/56658 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:41125/SOURCE02?view=true.
Council of Science Editors:
Wijayaratna K. Modelling disrupted transport network behaviour. [Doctoral Dissertation]. University of New South Wales; 2016. Available from: http://handle.unsw.edu.au/1959.4/56658 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:41125/SOURCE02?view=true

University of Texas – Austin
27.
-9138-510X.
Data-driven placement of centroid connectors in dynamic traffic assignment.
Degree: MSin Engineering, Civil engineering, 2016, University of Texas – Austin
URL: http://hdl.handle.net/2152/41749
► Recent technological advances allows transportation engineering professions to collect, share, and handle unprecedented quantities of data, which has the potential to transform current transportation planning…
(more)
▼ Recent technological advances allows transportation engineering professions to collect, share, and handle unprecedented quantities of data, which has the potential to transform current transportation planning paradigms. In the immediate future, data can be used to improve the precision and capabilities of existing transportation network modeling frameworks. Parcel data is a large, readily available data source that represents the location of public lands, businesses, and residences and is frequently used by government and businesses for land use and zoning decisions. This thesis looks at the viability of using parcel data to inform static
traffic assignment (STA) and dynamic
traffic assignment (DTA) connector placement in a medium sized network in the Austin, TX region.
Simulation-based DTA models are particularly sensitive to the topological detail of the
traffic network, including the location of centroid connectors. Traditional centroid connector placement strategies may lead to excessive congestion and unrealistic
traffic patterns, while manual network refinement is prohibitive in large regional models. In this thesis, parcel-level data is used to both allocate travel demand between two sub-regions in each considered
traffic analysis zone and to select appropriate nodes for the centroid connector placement. Numerical experiments suggest that the proposed approach better approximates both corridor travel times and
traffic counts throughout the network, with improvements of more than 40 percent in travel time estimation accuracy, and 12 percent in
traffic count estimation. Additionally, the scenarios that best matched count and travel time data were the scenarios that had the highest average parcel density per entry/exit node, indicating that parcel data is an acceptable proxy for high demand points in the network.
When applied in STA, the results were not quite as promising. Although this methodology was able to improve the utilization of lower capacity links, the results ultimately did not better resemble volume count data. However, this does represent a simple, transparent, and data-driven approach for centroid connector placement in static
traffic assignment that performs as well as traditional methods.
Advisors/Committee Members: Boyles, Stephen David, 1982- (advisor), Gemar, Mason D (committee member).
Subjects/Keywords: Dynamic traffic assignment; Centroid connectors; Network modeling; Network loading
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
-9138-510X. (2016). Data-driven placement of centroid connectors in dynamic traffic assignment. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/41749
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-9138-510X. “Data-driven placement of centroid connectors in dynamic traffic assignment.” 2016. Masters Thesis, University of Texas – Austin. Accessed April 12, 2021.
http://hdl.handle.net/2152/41749.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-9138-510X. “Data-driven placement of centroid connectors in dynamic traffic assignment.” 2016. Web. 12 Apr 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-9138-510X. Data-driven placement of centroid connectors in dynamic traffic assignment. [Internet] [Masters thesis]. University of Texas – Austin; 2016. [cited 2021 Apr 12].
Available from: http://hdl.handle.net/2152/41749.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-9138-510X. Data-driven placement of centroid connectors in dynamic traffic assignment. [Masters Thesis]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/41749
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Texas – Austin
28.
-3507-0044.
Planning for autonomous vehicles : effects and optimal placement of reservation-based intersections in urban networks.
Degree: MSin Engineering, Civil Engineering, 2019, University of Texas – Austin
URL: http://dx.doi.org/10.26153/tsw/5453
► Connected and autonomous vehicle (CAV) technologies can revolutionize the way we transport people and goods and may soon be publicly available, however proper planning for…
(more)
▼ Connected and autonomous vehicle (CAV) technologies can revolutionize the way we transport people and goods and may soon be publicly available, however proper planning for these technologies is crucial to their successful integration into our transportation systems. CAVs can reduce following headways and increase roadway capacity and stability, as well as allow for new, more efficient intersection controls with wireless communication capabilities. This work is twofold: (1) evaluating the
traffic congestion impacts of AVs and reservation-based intersection control on real large-scale city networks in Texas using DTA and (2) developing methods to find optimal configurations of reservations and signals in a city network.
The first part of this thesis evaluates CAV behavior impacts by simulating different mixed CAV and human vehicle (HV) demand scenarios. Results show improvements in network efficiency with increases in CAV penetration. Reservations were observed to perform better than signals in most scenarios. Namely, the Austin downtown network resulted in a 78% reduction in travel time. However, signals outperformed reservations in some high demand cases on arterial networks due to the reservation's first-come-first-serve (FCFS) policy allocating more capacity to local roads, resulting in arterial progression interruption and queue spillback onto close-proximity streets. The discovered paradoxical effects imply that some intersections are better suited for reservation control than others.
The second part of this thesis finds and characterizes favorable mixed-configurations of reservation-based controls and signalized controls in a large city network which minimize total system travel times. As this optimization problem is bi-level and challenging, we propose three different methods to heuristically find effective mixed-configurations. The first method is an intersection ranking method uses simulation to assign a score to each intersection in a network based on localized potential benefit to system travel time under reservation control and then ranks all intersections accordingly. The second is another ranking method, however uses linear regression to predict an intersection's localized score. Finally, we present a genetic algorithm which iteratively approaches high-performing network configurations yielding minimal system travel times. We test the methods on the downtown Austin network and find configurations which are less than half controlled by reservation intersections that improve travel times beyond an all-reservation controlled network. Overall, our results show that the genetic algorithm finds the best performing configurations with the initial score-assigning ranking method performing similarly but much more efficiently. We finally find that favorable reservation placement is in consecutive chains along highly trafficked corridors.
Advisors/Committee Members: Boyles, Stephen David, 1982- (advisor).
Subjects/Keywords: Autonomous vehicles; Reservation-based intersection control; Dynamic traffic assignment; Genetic algorithm
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
-3507-0044. (2019). Planning for autonomous vehicles : effects and optimal placement of reservation-based intersections in urban networks. (Masters Thesis). University of Texas – Austin. Retrieved from http://dx.doi.org/10.26153/tsw/5453
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-3507-0044. “Planning for autonomous vehicles : effects and optimal placement of reservation-based intersections in urban networks.” 2019. Masters Thesis, University of Texas – Austin. Accessed April 12, 2021.
http://dx.doi.org/10.26153/tsw/5453.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-3507-0044. “Planning for autonomous vehicles : effects and optimal placement of reservation-based intersections in urban networks.” 2019. Web. 12 Apr 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-3507-0044. Planning for autonomous vehicles : effects and optimal placement of reservation-based intersections in urban networks. [Internet] [Masters thesis]. University of Texas – Austin; 2019. [cited 2021 Apr 12].
Available from: http://dx.doi.org/10.26153/tsw/5453.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-3507-0044. Planning for autonomous vehicles : effects and optimal placement of reservation-based intersections in urban networks. [Masters Thesis]. University of Texas – Austin; 2019. Available from: http://dx.doi.org/10.26153/tsw/5453
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
29.
Lin, Dongmei.
Linking Travel Demand Modeling with Micro-Simulation.
Degree: 2016, University of Nevada – Reno
URL: http://hdl.handle.net/11714/2141
► Travel demand forecasting and traffic simulation are two important components of transportation studies. Travel demand forecasting models have typically been used for planning purposes for…
(more)
▼ Travel demand forecasting and
traffic simulation are two important components of transportation studies. Travel demand forecasting models have typically been used for planning purposes for future transportation systems at a macroscopic level.
Traffic simulation tools are often used to account for the movements of individual vehicles at a microscopic level. Traditionally, there has been a disconnection between the macroscopic and microscopic levels. The desire to link travel demand models and
traffic simulation models has been recognized by transportation agencies and professionals.With the advent of computing technologies, transportation agencies are increasingly adopting microscopic
traffic simulation models for large-scale design projects to obtain more detailed operational analyses. One critical issue that transportation agencies often encounter is that constructing a microscopic simulation model from scratch still consumes a significant amount of resources. This research aims to develop a conversion method to extract a portion of a travel demand network in TransCAD for constructing a consistent subarea of interest, and then convert it into a microscopic simulation in Synchro/SimTraffic.TransCAD in nature is a macroscopic travel demand modeling tool. Synchro/SimTraffic provides detailed microscopic
traffic analysis. Dynamic
Traffic Assignment models serve as a mesoscopic tool for
traffic analysis, which lie between TransCAD and Synchro. To convert a TransCAD model into Synchro for micro-simulation, a cross-resolution simulation method using NeXTA/DTALite as an intermediate tool was adopted. This method develops a DTA model that ensures consistency between TransCAD
traffic demand and Synchro vehicle flow, and allows users to easily define a subarea in the DTA model and convert it to Synchro. The conversion method was tested for its functionality using the TransCAD model maintained by the Regional Transportation Commission of Southern Nevada (RTCSN). The test application demonstrated the integration of TransCAD, DTA, and Synchro as well as the successful application of converting a TransCAD network to DTA, and a subarea from DTA to Synchro. Results from the case study show significant time savings by using the proposed method compared to traditional manual methods. Major conclusions and some outstanding issues from the research are documented in this thesis. A User’s Manual for the conversion process is also included in the thesis.
Advisors/Committee Members: Tian, Zong Z. (advisor), Xu, Hao (committee member), Ahn, Mihye (committee member).
Subjects/Keywords: Conversion; Cross-resolution; Dynamic Traffic Assignment; Micro-simulation; Travel Demand Model
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lin, D. (2016). Linking Travel Demand Modeling with Micro-Simulation. (Thesis). University of Nevada – Reno. Retrieved from http://hdl.handle.net/11714/2141
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Lin, Dongmei. “Linking Travel Demand Modeling with Micro-Simulation.” 2016. Thesis, University of Nevada – Reno. Accessed April 12, 2021.
http://hdl.handle.net/11714/2141.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lin, Dongmei. “Linking Travel Demand Modeling with Micro-Simulation.” 2016. Web. 12 Apr 2021.
Vancouver:
Lin D. Linking Travel Demand Modeling with Micro-Simulation. [Internet] [Thesis]. University of Nevada – Reno; 2016. [cited 2021 Apr 12].
Available from: http://hdl.handle.net/11714/2141.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lin D. Linking Travel Demand Modeling with Micro-Simulation. [Thesis]. University of Nevada – Reno; 2016. Available from: http://hdl.handle.net/11714/2141
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Utah
30.
Butt, Muhammad Farhan.
A practical perspective on the benefits of combined traffic assignment and control models.
Degree: PhD, Civil & Environmental Engineering, 2012, University of Utah
URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/699/rec/71
► As the nation’s traffic system becomes more congested for various periods of the day, more research in the area of intelligent transportation systems is needed.…
(more)
▼ As the nation’s traffic system becomes more congested for various periods of the day, more research in the area of intelligent transportation systems is needed. Traditional solutions of adding more highways and widening the existing system are not feasible anymore due to rapidly increasing demand and lack of room for expansion. The national interest is therefore focused on congestion mitigation methods that promote efficient use of existing infrastructure. Some of the key aspects of congestion management techniques include Intelligent Transportation Systems (ITS) elements. These ITS elements can play a role in drivers’ interaction, route choice, and traffic controls. Combined Traffic Assignment and Control (CTAC) framework-based models can capture the ITS elements- based control-driver interaction in traffic systems.The CTAC method has been the topic of scientific research for the last three decades. Several solution algorithms, model formulations, and implementation efforts have been well documented. Although proven in research, the use of the combined traffic assignment and control modeling framework is rare in practice. Typically, the engineering practice tends to keep Traffic Assignment and Control Optimization processes separate. By doing so, the control-driver interaction in the traffic system is ignored. Previous research found that CTAC models could capture the control-driver interaction and the combined modeling framework should be used in practice.
Subjects/Keywords: Dynamic traffic assignment; Joint route choice and controls; Static traffic assignmentl Traffic congestion; Travel models; VISSIM simulatio
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APA (6th Edition):
Butt, M. F. (2012). A practical perspective on the benefits of combined traffic assignment and control models. (Doctoral Dissertation). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/699/rec/71
Chicago Manual of Style (16th Edition):
Butt, Muhammad Farhan. “A practical perspective on the benefits of combined traffic assignment and control models.” 2012. Doctoral Dissertation, University of Utah. Accessed April 12, 2021.
http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/699/rec/71.
MLA Handbook (7th Edition):
Butt, Muhammad Farhan. “A practical perspective on the benefits of combined traffic assignment and control models.” 2012. Web. 12 Apr 2021.
Vancouver:
Butt MF. A practical perspective on the benefits of combined traffic assignment and control models. [Internet] [Doctoral dissertation]. University of Utah; 2012. [cited 2021 Apr 12].
Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/699/rec/71.
Council of Science Editors:
Butt MF. A practical perspective on the benefits of combined traffic assignment and control models. [Doctoral Dissertation]. University of Utah; 2012. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/699/rec/71
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