You searched for subject:(Traffic flow).
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537 total matches.
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University of Utah
1.
Zlatkovic, Milan.
Evaluation of transit signal priority in RBC and ASC/3 software-in-the-loop simulation environment.
Degree: MS;, Civil & Environmental Engineering;, 2009, University of Utah
URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/143/rec/438 
► In recent years, traffic simulation software packages have become powerful tools in developing and studying the impacts of different traffic scenarios. This study presents a…
(more)
▼ In recent years, traffic simulation software packages have become powerful tools in developing and studying the impacts of different traffic scenarios. This study presents a use of the VISSIM traffic simulation software in evaluating Transit Signal Priority (TSP) strategies using two types of emulated signal controllers: the Ring Barrier Controller (RBC) emulator, and the ASC/3 Software-in-the-Loop (SIL) traffic controller. The two signal control types were evaluated and compared for their abilities to provide TSP and the impacts it causes on the overall traffic. The results have shown benefits of the evaluated traffic controllers within VISSIM in simulating different TSP strategies, despite some differences and problems with controller settings. On the test-case network, the results have shown reductions in transit travel times from 4 to 7%, which are assigned to TSP. With combined Bus Rapid Transit (BRT) and TSP strategies, these travel time savings were in a range from 15 to 20%. Impacts on general purpose traffic along the main corridor were not observed, while TSP causes an increase in delays on side streets of approximately 1% and an increase in the number of stops of approximately 0.5%. The results also showed some differences in the way the two controller types implement TSP strategies.
Subjects/Keywords: Traffic flow; Traffic engineering
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APA (6th Edition):
Zlatkovic, M. (2009). Evaluation of transit signal priority in RBC and ASC/3 software-in-the-loop simulation environment. (Masters Thesis). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/143/rec/438
Chicago Manual of Style (16th Edition):
Zlatkovic, Milan. “Evaluation of transit signal priority in RBC and ASC/3 software-in-the-loop simulation environment.” 2009. Masters Thesis, University of Utah. Accessed January 16, 2021.
http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/143/rec/438.
MLA Handbook (7th Edition):
Zlatkovic, Milan. “Evaluation of transit signal priority in RBC and ASC/3 software-in-the-loop simulation environment.” 2009. Web. 16 Jan 2021.
Vancouver:
Zlatkovic M. Evaluation of transit signal priority in RBC and ASC/3 software-in-the-loop simulation environment. [Internet] [Masters thesis]. University of Utah; 2009. [cited 2021 Jan 16].
Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/143/rec/438.
Council of Science Editors:
Zlatkovic M. Evaluation of transit signal priority in RBC and ASC/3 software-in-the-loop simulation environment. [Masters Thesis]. University of Utah; 2009. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/143/rec/438
Massey University
2.
Parry, Katharina.
Statistical modelling and inference for traffic networks : a thesis submitted for the degree of Doctor of Philosophy
.
Degree: 2012, Massey University
URL: http://hdl.handle.net/10179/4259
► There are two facets that are important in providing reliable forecasts from observed traffi c data. The first is that the model used should describe…
(more)
▼ There are two facets that are important in providing reliable forecasts from
observed traffi c data. The first is that the model used should describe and
represent as many characteristics of the system as possible. The second is
that the estimates of the model parameters need to be accurate. We begin
with improved methods of statistical inference for various types of models
and using various types of data; and then move onto the development of
new models that describe the day-to-day dynamics of traffic systems.
Calibration of transport models for traffic systems gives rise to a variety
of statistical inference problems, such as estimation of travel demand parameters.
Once the ways in which vehicles move through the network are
known, statistical inference becomes straightforward, however, at present,
the data available are predominantly vehicle counts from a set of links in
the network. The fundamental problem is that these vehicle counts do not
uniquely determine the route
ows, as there are a large number of possible
route
ows that could have led to a given set of observed link counts.
A solution to this problem is to simulate the latent route
ows conditional
on the observed link counts in a Markov Chain Monte Carlo sampling algorithm.
This is challenging because the set of feasible route
ows will
typically be far too large to enumerate in practice, meaning that we must
simulate from a set that we cannot fully specify. An innovative piece of work
here was the extension of an existing sampling methodology that works only
for linear networks to be applicable for tree networks. In simulation studies
where we use the sample to estimate average route
ows, we show that
our method provides more reliable estimates than generalised least squares
methods. This is to be expected given that our method exploits information
available via second order properties of the link counts.
We provide another demonstration of how this generalised sampler can be
applied whenever the need to sample from the set of latent route
ows is
pivotal for making statistical inference. We use the sampler to estimate
travel demand parameters for day-to-day dynamic process models, an important
class of model where the data has been collected on successive days
and hence allows for inference using the evolution of the traffic
flows over
time.
A new type of data, route
flows from tracked vehicles, is becoming increasingly
available through emerging technologies. Our contribution was to
develop a statistical likelihood model that incorporates this routing information
into currently used link-count data only models. We derive some
tractable normal approximations thereof and perform likelihood-based inference
for these normal models under the assumption that the probability
of vehicle tracking is known.
In our analysis we find that the likelihood shows irregular behaviour due to
boundary effects, and provide conditions under which such behaviour will
be observed. For regular cases we outline…
Subjects/Keywords: Traffic flow;
Traffic systems;
Traffic networks;
Traffic network modelling
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APA (6th Edition):
Parry, K. (2012). Statistical modelling and inference for traffic networks : a thesis submitted for the degree of Doctor of Philosophy
. (Thesis). Massey University. Retrieved from http://hdl.handle.net/10179/4259
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):
Parry, Katharina. “Statistical modelling and inference for traffic networks : a thesis submitted for the degree of Doctor of Philosophy
.” 2012. Thesis, Massey University. Accessed January 16, 2021.
http://hdl.handle.net/10179/4259.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Parry, Katharina. “Statistical modelling and inference for traffic networks : a thesis submitted for the degree of Doctor of Philosophy
.” 2012. Web. 16 Jan 2021.
Vancouver:
Parry K. Statistical modelling and inference for traffic networks : a thesis submitted for the degree of Doctor of Philosophy
. [Internet] [Thesis]. Massey University; 2012. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10179/4259.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Parry K. Statistical modelling and inference for traffic networks : a thesis submitted for the degree of Doctor of Philosophy
. [Thesis]. Massey University; 2012. Available from: http://hdl.handle.net/10179/4259
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
3.
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 ·
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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 January 16, 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. 16 Jan 2021.
Vancouver:
Ye H. Day-to-day flow dynamic models and applications. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2014. [cited 2021 Jan 16].
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
4.
Stovall, Jose.
Video analytics on the MLK Smart Corridor testbed.
Degree: 2020, University of Tennessee – Chattanooga
URL: https://scholar.utc.edu/theses/655
► With the predicted boom of urban environment populations in the next 30 years, many new challenges in urban transportation will surface. In an effort to…
(more)
▼ With the predicted boom of urban environment populations in the next 30 years, many new challenges in urban transportation will surface. In an effort to mitigate these, the Center for Urban Informatics and Progress (CUIP) has been introduced along with its testbed. One opportunity this testbed provides is the ability to utilize computer vision and video analytics to anonymously gather data on how citizens traverse the city. This thesis shall discuss an approach to real-time object tracking that serves as a basis for further analytics such as
traffic flow data collection and near-miss detection. The proposed video analytics platform will aid citizens with their day-to-day commute through the corridor by deriving real-time data based on actual behavior seen in the citizens' commute. Furthermore, since the testbed is ever-expanding in both hardware and size the algorithms and software proposed in this thesis are designed to prioritize scalability.
Advisors/Committee Members: Sartipi, Mina, Liang, Yu, Kandah, Farah, College of Engineering and Computer Science.
Subjects/Keywords: Computer vision; Traffic conflicts; Traffic flow
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APA (6th Edition):
Stovall, J. (2020). Video analytics on the MLK Smart Corridor testbed. (Masters Thesis). University of Tennessee – Chattanooga. Retrieved from https://scholar.utc.edu/theses/655
Chicago Manual of Style (16th Edition):
Stovall, Jose. “Video analytics on the MLK Smart Corridor testbed.” 2020. Masters Thesis, University of Tennessee – Chattanooga. Accessed January 16, 2021.
https://scholar.utc.edu/theses/655.
MLA Handbook (7th Edition):
Stovall, Jose. “Video analytics on the MLK Smart Corridor testbed.” 2020. Web. 16 Jan 2021.
Vancouver:
Stovall J. Video analytics on the MLK Smart Corridor testbed. [Internet] [Masters thesis]. University of Tennessee – Chattanooga; 2020. [cited 2021 Jan 16].
Available from: https://scholar.utc.edu/theses/655.
Council of Science Editors:
Stovall J. Video analytics on the MLK Smart Corridor testbed. [Masters Thesis]. University of Tennessee – Chattanooga; 2020. Available from: https://scholar.utc.edu/theses/655
University of Utah
5.
Song, Ying.
Visual exploration of large traffic database using traffic cubes.
Degree: MS;, Geography;, 2010, University of Utah
URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/275/rec/1285
► Advances in data collection tools and computation abilities result in a significant increase of capabilities for both collecting and generating data. The consequent growth of…
(more)
▼ Advances in data collection tools and computation abilities result in a significant increase of capabilities for both collecting and generating data. The consequent growth of available data generates an urgent need for techniques to transform the massive amount of collected data into useful information. This thesis develops traffic-cube based visualization techniques, and demonstrates the efficiency of those techniques as an approach of mining traffic flow data. The basis of these techniques is a data mining technique known as data cube, which is an array of values defined across multiple measurement dimensions that allows rapid, user-interactive aggregation and cross-tabulations of data. The traffic cube is an extension of the data cube that facilitates these operations and is usually used to organize and manage traffic flow data. In this thesis, the traffic cube is defined by three dimensions: the clock time (T), the calendar date (D), and the spatial location (S) of the recorded traffic count. For each dimension, a hierarchy is designed for data aggregation; and we visualize the aggregated two-dimensional slices of the original traffic data cube to extract useful information about traffic situation.
Subjects/Keywords: Traffic flow; Computer simulation
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APA ·
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Manager
APA (6th Edition):
Song, Y. (2010). Visual exploration of large traffic database using traffic cubes. (Masters Thesis). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/275/rec/1285
Chicago Manual of Style (16th Edition):
Song, Ying. “Visual exploration of large traffic database using traffic cubes.” 2010. Masters Thesis, University of Utah. Accessed January 16, 2021.
http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/275/rec/1285.
MLA Handbook (7th Edition):
Song, Ying. “Visual exploration of large traffic database using traffic cubes.” 2010. Web. 16 Jan 2021.
Vancouver:
Song Y. Visual exploration of large traffic database using traffic cubes. [Internet] [Masters thesis]. University of Utah; 2010. [cited 2021 Jan 16].
Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/275/rec/1285.
Council of Science Editors:
Song Y. Visual exploration of large traffic database using traffic cubes. [Masters Thesis]. University of Utah; 2010. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/275/rec/1285
University of Manitoba
6.
Duff, Michael.
Using agent-based vehicle traffic models to analyze traffic flow.
Degree: Electrical and Computer Engineering, 2018, University of Manitoba
URL: http://hdl.handle.net/1993/33414
► This thesis discusses the creation of an agent-based model for vehicle traffic that uses a previously developed mathematical car-following micro-simulation model. The agent-based model results…
(more)
▼ This thesis discusses the creation of an agent-based model for vehicle
traffic that uses a previously developed mathematical car-following micro-simulation model. The agent-based model results are verified against the original model. The agent-based model is then used to explore the effects of inclement weather and autonomous drivers on
traffic to explore the suitability of using the agent-based approach to model
traffic. The primary environment focused on is a signalized four-way intersection, with an extension to freeways for autonomous vehicle simulation. The model is used to demonstrate how optimizing green light intervals at intersections based on current weather conditions can help to partially restore
traffic throughput to normal condition levels. Results from simulations with autonomous vehicles demonstrate that
traffic flow steadily increases as these vehicles enter the driving population. In the case of signalized intersections this improvement increases in inclement weather, but increases are flat across different weather conditions for freeways.
Advisors/Committee Members: McLeod, Bob (Electrical and Computer Engineering) (supervisor), Friesen, Marcia (Electrical and Computer Engineering).
Subjects/Keywords: Agent-Based Models; Traffic flow
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APA (6th Edition):
Duff, M. (2018). Using agent-based vehicle traffic models to analyze traffic flow. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/33414
Chicago Manual of Style (16th Edition):
Duff, Michael. “Using agent-based vehicle traffic models to analyze traffic flow.” 2018. Masters Thesis, University of Manitoba. Accessed January 16, 2021.
http://hdl.handle.net/1993/33414.
MLA Handbook (7th Edition):
Duff, Michael. “Using agent-based vehicle traffic models to analyze traffic flow.” 2018. Web. 16 Jan 2021.
Vancouver:
Duff M. Using agent-based vehicle traffic models to analyze traffic flow. [Internet] [Masters thesis]. University of Manitoba; 2018. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/1993/33414.
Council of Science Editors:
Duff M. Using agent-based vehicle traffic models to analyze traffic flow. [Masters Thesis]. University of Manitoba; 2018. Available from: http://hdl.handle.net/1993/33414
Michigan State University
7.
Zhang, Yi-Chen.
Functional data analysis with application to traffic flow data.
Degree: 2018, Michigan State University
URL: http://etd.lib.msu.edu/islandora/object/etd:19256
► Thesis Ph. D. Michigan State University. Statistics 2018
Functional data has become increasingly popular in the recent statistical literature. Considerable attention has been paid to…
(more)
▼ Thesis Ph. D. Michigan State University. Statistics 2018
Functional data has become increasingly popular in the recent statistical literature. Considerable attention has been paid to the development of functional data analysis. This thesis consists of four main chapters to address some important questions that arise from implementing FPCA in practice and to give answer to these questions. In Chapter 2, we investigate the problem of data preprocessing for functional data. We propose and analyzes a nonparametric functional data approach to missing value imputation and outlier detection for functional data. In Chapter 3, a functional naive Bayes classifier has been proposed for functional data which provides a surrogate density estimation for functional random variables that makes a direct extension of density-based classical multivariate classification approaches to functional data classification possible. In Chapter 4, we merge two ideas of functional classification and functional prediction to develop a dynamical prediction for functional data. The proposed functional mixture prediction approach combines functional linear model with functional naive Bayes classifier. In Chapter 5, we suggest a two-step segmentation procedure to estimate both the number and locations of the mean change-points of a functional sequence. Finally, the thesis concludes with a brief discussion of future research directions.
Online resource;
Advisors/Committee Members: Sakhanenko, Lyudmila, Zhu, David, Zhong, Ping-Shou, Xie, Yuying.
Subjects/Keywords: Functional analysis; Traffic flow; Statistics
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APA (6th Edition):
Zhang, Y. (2018). Functional data analysis with application to traffic flow data. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:19256
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):
Zhang, Yi-Chen. “Functional data analysis with application to traffic flow data.” 2018. Thesis, Michigan State University. Accessed January 16, 2021.
http://etd.lib.msu.edu/islandora/object/etd:19256.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Zhang, Yi-Chen. “Functional data analysis with application to traffic flow data.” 2018. Web. 16 Jan 2021.
Vancouver:
Zhang Y. Functional data analysis with application to traffic flow data. [Internet] [Thesis]. Michigan State University; 2018. [cited 2021 Jan 16].
Available from: http://etd.lib.msu.edu/islandora/object/etd:19256.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Zhang Y. Functional data analysis with application to traffic flow data. [Thesis]. Michigan State University; 2018. Available from: http://etd.lib.msu.edu/islandora/object/etd:19256
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Southern California
8.
Wang, Yun.
Dynamic variable speed limit control: design, analysis and
benefits.
Degree: PhD, Electrical Engineering, 2011, University of Southern California
URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/651456/rec/2133
► Variable speed limit (VSL) systems, as one of the freeway control strategies among Intelligent Transportation Systems (ITS), have been studied since 1970s. However, the cases…
(more)
▼ Variable speed limit (VSL) systems, as one of the
freeway control strategies among Intelligent Transportation Systems
(ITS), have been studied since 1970s. However, the cases of field
implementations are limited, mostly in Europe and the United
States. The VSL systems are considered to reduce risk of crashes,
to warn drivers of hazardous roadway conditions, to stabilize and
smooth
traffic flows, to dampen shock waves, to postpone or prevent
congestions, and to reduce emissions and fuel consumptions. The
safety benefits of using VSL have been reported in several field
studies both in Europe and the United States. Currently, the
incentive of using VSL has been mainly safety from the application
point of view. However, benefits such as improved
traffic flow
rates, lower travel times, smooth speed and density distribution
and possibly lower pollution have been conjectured in literature
and in some cases analyzed using mainly macroscopic
traffic models.
A closer look at these promising results in the literature shows
that using the same macroscopic model to design and test raises
questions as to whether the simplicity of the models used for
evaluation are responsible for these optimistic results given the
fact that other studies using microscopic simulations fail to
demonstrate improvements on travel times albeit for different VSL
strategies. The question whether the VSL strategies or the
macroscopic models used to analyze them or both are responsible for
the large differences in
traffic flow and travel time benefits
reported, remains unanswered. Consequently, the problem of what are
the most appropriate dynamic VSL controllers and what benefits can
be guaranteed in a consistent manner under different
traffic flow
conditions is an open one. ❧ In this study, the problems of the
design, analysis and evaluation of dynamic VSL controllers are
addressed. A control engineering approach is followed, where the
control strategies are designed based on simplified models (in this
case validated macroscopic
traffic flow models) but applied and
tested on validated microscopic
traffic models under different
traffic conditions. Three dynamic VSL control designs, a simple
virtual metering strategy which is reactive and non-model based, a
nonlinear model predictive controller which is proactive and model
based, and a proportional speed controller which only needs
traffic
density/occupancy as inputs, are presented, tested using both
macroscopic and microscopic simulation models. Monte Carlo
simulations are conducted for 10 different scenarios using an
integrated simulation/evalution framework. ❧ Examining the
performance measurements summarized from several hundreds
simulations runs, the simple PI type controller with less
computational burden is not inferior to the more complicated
nonlinear MPC which also needs predicted demand and accident
information as inputs. Although macroscopic simulations
demonstrates that both simple controller and model predictive
controller could reduced Total Time Spent (TTS) for about 20%,
VISSIM microscopic…
Advisors/Committee Members: Ioannou, Petros A. (Committee Chair), Safonov, Michael G. (Committee Member), Moore, James Elliott, II (Committee Member).
Subjects/Keywords: variable speed limits; freeway traffic flow modeling; freeway traffic flow control; microscopic traffic flow simulation; macroscopic traffic flow simulation
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APA ·
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Manager
APA (6th Edition):
Wang, Y. (2011). Dynamic variable speed limit control: design, analysis and
benefits. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/651456/rec/2133
Chicago Manual of Style (16th Edition):
Wang, Yun. “Dynamic variable speed limit control: design, analysis and
benefits.” 2011. Doctoral Dissertation, University of Southern California. Accessed January 16, 2021.
http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/651456/rec/2133.
MLA Handbook (7th Edition):
Wang, Yun. “Dynamic variable speed limit control: design, analysis and
benefits.” 2011. Web. 16 Jan 2021.
Vancouver:
Wang Y. Dynamic variable speed limit control: design, analysis and
benefits. [Internet] [Doctoral dissertation]. University of Southern California; 2011. [cited 2021 Jan 16].
Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/651456/rec/2133.
Council of Science Editors:
Wang Y. Dynamic variable speed limit control: design, analysis and
benefits. [Doctoral Dissertation]. University of Southern California; 2011. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/651456/rec/2133
Georgia Tech
9.
Yu, Hsiao-Cheng David.
Traffic flow considerations in network assignment model.
Degree: MS, Industrial engineering, 1976, Georgia Tech
URL: http://hdl.handle.net/1853/21702
Subjects/Keywords: Traffic flow
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APA (6th Edition):
Yu, H. D. (1976). Traffic flow considerations in network assignment model. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/21702
Chicago Manual of Style (16th Edition):
Yu, Hsiao-Cheng David. “Traffic flow considerations in network assignment model.” 1976. Masters Thesis, Georgia Tech. Accessed January 16, 2021.
http://hdl.handle.net/1853/21702.
MLA Handbook (7th Edition):
Yu, Hsiao-Cheng David. “Traffic flow considerations in network assignment model.” 1976. Web. 16 Jan 2021.
Vancouver:
Yu HD. Traffic flow considerations in network assignment model. [Internet] [Masters thesis]. Georgia Tech; 1976. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/1853/21702.
Council of Science Editors:
Yu HD. Traffic flow considerations in network assignment model. [Masters Thesis]. Georgia Tech; 1976. Available from: http://hdl.handle.net/1853/21702
Rutgers University
10.
Liu, Ruilin, 1987-.
Capturing and analyzing human driving behavior to improve road travel experience.
Degree: PhD, Computer Science, 2017, Rutgers University
URL: https://rucore.libraries.rutgers.edu/rutgers-lib/55566/
► People commute on daily basis and spend a considerable amount of time on road travels. Unfortunately, due to the dense population and concentration of economic…
(more)
▼ People commute on daily basis and spend a considerable amount of time on road travels. Unfortunately, due to the dense population and concentration of economic activities in metropolitan areas, urban transportation suffers a lot of challenges, e.g.
traffic congestion and parking space storage, which also affect each individual's travel experience. Previous studies have looked into the transportation condition sensing solution using various static or mobile sensors and
traffic related recommendation services based on the sensing results, e.g. vehicle routing and parking recommendation. However, human behaviors as the most direct reflection as well as the final modifier of the
traffic condition, have not been fully explored to close the sensing-and-control loop in the urban transportation system. This dissertation aims at improving drivers' road travel experience by taking human driver's behavior in vehicle routing and parking search processes into consideration. In the first part of the dissertation, we focus on the
traffic condition sensing and routing service design, altering the isolated
traffic sensing and the greedy routing strategy based on sensed
traffic condition. Instead, we present a participatory system, called Themis, to consider
traffic sensing and route planning as a whole: (i) By analyzing time-stamped position reports and route decisions collected from the Themis mobile app, the Themis server estimates both the current
traffic rhythm and the future
traffic distribution. (ii) The routing requests are then combined with the sensed
traffic condition to provide route recommendations that minimize the travel cost of all drivers to proactively alleviate
traffic congestions. Themis has been implemented and its performance has been evaluated in both simulation experiments using real data from over 26,000 taxis and a field study. Results from both experiments demonstrate that Themis reduces
traffic congestion and average travel time at various
traffic densities and system penetration rates. In the second part of the dissertation, we look into the crucial part of parking recommendation, i.e., fine-grained parking availability crowdsourcing and propose a solution based on human's parking and ignoring decisions: a parking decision immediately take an available spot while an ignored spot along a driver's parking search trajectory is likely to be already taken. However, complications caused by drivers' preferences, e.g. ignoring the spots too far from the driver's destination, have to be addressed based on human parking decisions. We build a model based on a dataset of more than 55,000 real parking decisions to predict the probability that a driver would take a spot, assuming the spot is available.Then, we present a crowdsourcing system, called ParkScan, which leverages the learned parking decision model in collaboration with the hidden Markov model to estimate background parking spot availability. ParkScan has been evaluated using real-world data from both off-street scenarios (i.e., two public parking lots)…
Advisors/Committee Members: Nath, Badri (chair), Ganapathy, Vinod (internal member), Zhang, Desheng (internal member), Shankar, Pravin (outside member), School of Graduate Studies.
Subjects/Keywords: Traffic flow; Automobile drivers – Behavior
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APA (6th Edition):
Liu, Ruilin, 1. (2017). Capturing and analyzing human driving behavior to improve road travel experience. (Doctoral Dissertation). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/55566/
Chicago Manual of Style (16th Edition):
Liu, Ruilin, 1987-. “Capturing and analyzing human driving behavior to improve road travel experience.” 2017. Doctoral Dissertation, Rutgers University. Accessed January 16, 2021.
https://rucore.libraries.rutgers.edu/rutgers-lib/55566/.
MLA Handbook (7th Edition):
Liu, Ruilin, 1987-. “Capturing and analyzing human driving behavior to improve road travel experience.” 2017. Web. 16 Jan 2021.
Vancouver:
Liu, Ruilin 1. Capturing and analyzing human driving behavior to improve road travel experience. [Internet] [Doctoral dissertation]. Rutgers University; 2017. [cited 2021 Jan 16].
Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/55566/.
Council of Science Editors:
Liu, Ruilin 1. Capturing and analyzing human driving behavior to improve road travel experience. [Doctoral Dissertation]. Rutgers University; 2017. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/55566/
Hong Kong University of Science and Technology
11.
Xiao, Lin.
Traffic management through adaptive control methods.
Degree: 2013, Hong Kong University of Science and Technology
URL: http://repository.ust.hk/ir/Record/1783.1-61596
;
https://doi.org/10.14711/thesis-b1251902
;
http://repository.ust.hk/ir/bitstream/1783.1-61596/1/th_redirect.html
► There are mainly two angles of view to investigate the traffic system, either from the view of traffic management, or from the view of individual…
(more)
▼ There are mainly two angles of view to investigate the traffic system, either from the view of traffic management, or from the view of individual travelers (or a group of homogenous travelers). The former, who designs and operates the system, is seeking for a solution with minimal total system cost, including vehicle en route travel time, emissions, delay, infrastructure construction and maintenance expenses, etc., and maximal facility utility, including safety, capacity, service level, etc. On the other hand, the latter, who rarely shares the same perspective with the former, is continually searching for and switching to the route with a better travel experience, for instance, with a shorter travel distance or travel time, lower travel cost, higher reliability, etc. Considering these two different perspectives, this thesis develops adaptive traffic control and vehicle navigation methods, assuming the availability of real-time information, and that the traffic system is evolving from period to period as the traffic control and/or navigation system adapt and travelers modify their route choices dynamically. Adaptive and dynamic are the two key words in this research. The term 'adaptive' carries two meanings: a), the ideas and objectives in this thesis are flexible and adaptive to different scenarios and objectives; b), the outputs of the formulations are relatively robust and cater for different real time information adaptively. By labeling the models and formulations as adaptive, we mean that they cater for different real time information and their sources such as travel time prediction from radios, posts from friends on social networks, trip suggestions from internet/web. Besides, we also mean that the decision making process is carried out adaptively while the trip is evolving. Similarly, the term 'dynamic' also counts in two aspects: a), the core technique used in the formulation is dynamic programming which grants the formulation the ability to adapt to different conditions; b), the subject studied in this research is viewed as a system evolving from period to period dynamically. By labeling our methods as dynamic, we imply that the dynamic programming techniques are used to assist in making trip/control decisions such that travelers have better trip experiences. At the same time, the traffic control measures and travelers in the traffic system are both considered dynamically evolving period to period. This thesis is expected to make theoretical contributions to traffic control and vehicle navigation methods by extending the concepts of adaptive control and period-to-period dynamics for traffic management while taking advantage of real time traffic information. Furthermore, with a proper representation of traffic control measures and traffic flow assignment principle, coupled with an explicit description of the dynamical system evolution process, a more comprehensive picture of the traffic system performance can be formulated. It is hoped that such a deeper understanding in and linkage between travel behavior…
Subjects/Keywords: Traffic engineering
; Adaptive control systems
; Electronic traffic controls
; Traffic flow
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APA (6th Edition):
Xiao, L. (2013). Traffic management through adaptive control methods. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-61596 ; https://doi.org/10.14711/thesis-b1251902 ; http://repository.ust.hk/ir/bitstream/1783.1-61596/1/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):
Xiao, Lin. “Traffic management through adaptive control methods.” 2013. Thesis, Hong Kong University of Science and Technology. Accessed January 16, 2021.
http://repository.ust.hk/ir/Record/1783.1-61596 ; https://doi.org/10.14711/thesis-b1251902 ; http://repository.ust.hk/ir/bitstream/1783.1-61596/1/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):
Xiao, Lin. “Traffic management through adaptive control methods.” 2013. Web. 16 Jan 2021.
Vancouver:
Xiao L. Traffic management through adaptive control methods. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2013. [cited 2021 Jan 16].
Available from: http://repository.ust.hk/ir/Record/1783.1-61596 ; https://doi.org/10.14711/thesis-b1251902 ; http://repository.ust.hk/ir/bitstream/1783.1-61596/1/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:
Xiao L. Traffic management through adaptive control methods. [Thesis]. Hong Kong University of Science and Technology; 2013. Available from: http://repository.ust.hk/ir/Record/1783.1-61596 ; https://doi.org/10.14711/thesis-b1251902 ; http://repository.ust.hk/ir/bitstream/1783.1-61596/1/th_redirect.html
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Tennessee – Knoxville
12.
Bae, Bumjoon.
Real-time Traffic Flow Detection and Prediction Algorithm: Data-Driven Analyses on Spatio-Temporal Traffic Dynamics.
Degree: 2017, University of Tennessee – Knoxville
URL: https://trace.tennessee.edu/utk_graddiss/4840
► Traffic flows over time and space. This spatio-temporal dependency of traffic flow should be considered and used to enhance the performance of real-time traffic detection…
(more)
▼ Traffic flows over time and space. This spatio-temporal dependency of traffic flow should be considered and used to enhance the performance of real-time traffic detection and prediction capabilities. This characteristic has been widely studied and various applications have been developed and enhanced. During the last decade, great attention has been paid to the increases in the number of traffic data sources, the amount of data, and the data-driven analysis methods. There is still room to improve the traffic detection and prediction capabilities through studies on the emerging resources. To this end, this dissertation presents a series of studies on real-time traffic operation for highway facilities focusing on detection and prediction.First, a spatio-temporal traffic data imputation approach was studied to exploit multi-source data. Different types of kriging methods were evaluated to utilize the spatio-temporal characteristic of traffic data with respect to two factors, including missing patterns and use of secondary data. Second, a short-term traffic speed prediction algorithm was proposed that provides accurate prediction results and is scalable for a large road network analysis in real time. The proposed algorithm consists of a data dimension reduction module and a nonparametric multivariate time-series analysis module. Third, a real-time traffic queue detection algorithm was developed based on traffic fundamentals combined with a statistical pattern recognition procedure. This algorithm was designed to detect dynamic queueing conditions in a spatio-temporal domain rather than detect a queue and congestion directly from traffic flow variables. The algorithm was evaluated by using various real congested traffic flow data. Lastly, gray areas in a decision-making process based on quantifiable measures were addressed to cope with uncertainties in modeling outputs. For intersection control type selection, the gray areas were identified and visualized.
Subjects/Keywords: traffic operation; traffic flow; traffic speed; congestion; detection; prediction
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APA ·
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MLA ·
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Export
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Manager
APA (6th Edition):
Bae, B. (2017). Real-time Traffic Flow Detection and Prediction Algorithm: Data-Driven Analyses on Spatio-Temporal Traffic Dynamics. (Doctoral Dissertation). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_graddiss/4840
Chicago Manual of Style (16th Edition):
Bae, Bumjoon. “Real-time Traffic Flow Detection and Prediction Algorithm: Data-Driven Analyses on Spatio-Temporal Traffic Dynamics.” 2017. Doctoral Dissertation, University of Tennessee – Knoxville. Accessed January 16, 2021.
https://trace.tennessee.edu/utk_graddiss/4840.
MLA Handbook (7th Edition):
Bae, Bumjoon. “Real-time Traffic Flow Detection and Prediction Algorithm: Data-Driven Analyses on Spatio-Temporal Traffic Dynamics.” 2017. Web. 16 Jan 2021.
Vancouver:
Bae B. Real-time Traffic Flow Detection and Prediction Algorithm: Data-Driven Analyses on Spatio-Temporal Traffic Dynamics. [Internet] [Doctoral dissertation]. University of Tennessee – Knoxville; 2017. [cited 2021 Jan 16].
Available from: https://trace.tennessee.edu/utk_graddiss/4840.
Council of Science Editors:
Bae B. Real-time Traffic Flow Detection and Prediction Algorithm: Data-Driven Analyses on Spatio-Temporal Traffic Dynamics. [Doctoral Dissertation]. University of Tennessee – Knoxville; 2017. Available from: https://trace.tennessee.edu/utk_graddiss/4840
Rutgers University
13.
Mudigonda, Sandeep, 1981-.
Methods for robust calibration of traffic simulation models.
Degree: PhD, Civil and Environmental Engineering, 2014, Rutgers University
URL: https://rucore.libraries.rutgers.edu/rutgers-lib/45366/
► Well-calibrated traffic simulation model predictions can be highly valid if various conditions arising due to time-of-day, work zones, weather, etc. are appropriately accounted for during…
(more)
▼ Well-calibrated traffic simulation model predictions can be highly valid if various conditions arising due to time-of-day, work zones, weather, etc. are appropriately accounted for during calibration. Calibration of traffic simulation models for various conditions requires larger datasets to capture the stochasticity. In this study we use datasets spanning large time periods to, especially, incorporate variability in traffic flow and speed. However, large datasets pose computational challenges. With the increase in number of stochastic factors, the numerical methods suffer from curse of dimensionality. We propose a novel methodology to address the computational complexity in simulation model calibration under highly stochastic traffic conditions. This methodology is based on sparse grid stochastic collocation, which treats each stochastic factor as a different dimension and uses a limited number of points where simulation is performed. A computationally-efficient interpolant is constructed to generate the full distribution of the simulated output. We use real-world examples to calibrate for different times of day and conditions and show that proposed methodology is more efficient than traditional Monte Carlo-type sampling. We validate the model using a hold-out dataset and also show the drawback of using limited data for macroscopic simulation model calibration. Modelers could often face situations with limited data in calibrating for a particular condition, often when using traffic sensor data. We augment the current data with other sources when sensor data is missing. For calibrating microscopic traffic simulation models needing customized models augmenting the default modeling, require detailed site-specific data. In such cases same generic calibration methodology may not be applicable and specialized formulations are required. We propose the use of a simulation-based optimization (SBO) framework for calibration of toll plaza models that economizes on data requirements. The novelty of the SBO framework is that parameters corresponding to unavailable data can be used as calibration parameters. Using case studies the benefits of the SBO framework are demonstrated. Furthermore, we combine the sampling and interpolation using stochastic collocation with the SBO framework. Using this hybrid framework, we perform calibration to obtain distribution of output from the toll plaza model that closely follows the observed measures at the toll plaza.
Advisors/Committee Members: Ozbay, Kaan (chair), Nassif, Hani (internal member), Gonzales, Eric (internal member), Fukuyama, Junichiro (outside member).
Subjects/Keywords: Traffic flow – Computer simulation; Traffic flow – Simulation methods; Monte Carlo method
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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Manager
APA (6th Edition):
Mudigonda, Sandeep, 1. (2014). Methods for robust calibration of traffic simulation models. (Doctoral Dissertation). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/45366/
Chicago Manual of Style (16th Edition):
Mudigonda, Sandeep, 1981-. “Methods for robust calibration of traffic simulation models.” 2014. Doctoral Dissertation, Rutgers University. Accessed January 16, 2021.
https://rucore.libraries.rutgers.edu/rutgers-lib/45366/.
MLA Handbook (7th Edition):
Mudigonda, Sandeep, 1981-. “Methods for robust calibration of traffic simulation models.” 2014. Web. 16 Jan 2021.
Vancouver:
Mudigonda, Sandeep 1. Methods for robust calibration of traffic simulation models. [Internet] [Doctoral dissertation]. Rutgers University; 2014. [cited 2021 Jan 16].
Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/45366/.
Council of Science Editors:
Mudigonda, Sandeep 1. Methods for robust calibration of traffic simulation models. [Doctoral Dissertation]. Rutgers University; 2014. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/45366/
University of Johannesburg
14.
Yumlu, Cennet.
Calibration of the SIDRA capacity analysis package for South African traffic conditions.
Degree: 2014, University of Johannesburg
URL: http://hdl.handle.net/10210/10244
► M.Phil. (Civil Engineering)
The SIDRA (Signalised Intersection Design and Research Aid) is calibrated for South African traffic conditions. Traditionally, South African traffic engineers made use…
(more)
▼ M.Phil. (Civil Engineering)
The SIDRA (Signalised Intersection Design and Research Aid) is calibrated for South African traffic conditions. Traditionally, South African traffic engineers made use of American or Australian based information to analyze traffic operations at signalised intersections. Two major models used in South Africa are HCM (Highway Capacity Manual) by the Transportation Research Board in the USA and SIDRA by the Australian Road Research Board. SIDRA is gaining popularity in South Africa because of the practical problems of the mirror image, which has to be maintained in using the HCM method due to the right side driving in the USA and other possible differences on driver behavior, vehicle attributes, geometric design and traffic control. SIDRA seems to be more suitable for South African conditions. Recently the use of SIDRA in this country has been increased to 44 organizations. This study aims to prepare a unified default file for South African users. Due to the large number of model parameters in SIDRA, priority is given to important ones for which information is readily available. And this study is confined to signalised intersections rather than all intersection types.
Subjects/Keywords: Traffic engineering - South Africa; Traffic flow - South Africa; Traffic flow - Data processing
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APA ·
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APA (6th Edition):
Yumlu, C. (2014). Calibration of the SIDRA capacity analysis package for South African traffic conditions. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/10244
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):
Yumlu, Cennet. “Calibration of the SIDRA capacity analysis package for South African traffic conditions.” 2014. Thesis, University of Johannesburg. Accessed January 16, 2021.
http://hdl.handle.net/10210/10244.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Yumlu, Cennet. “Calibration of the SIDRA capacity analysis package for South African traffic conditions.” 2014. Web. 16 Jan 2021.
Vancouver:
Yumlu C. Calibration of the SIDRA capacity analysis package for South African traffic conditions. [Internet] [Thesis]. University of Johannesburg; 2014. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10210/10244.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Yumlu C. Calibration of the SIDRA capacity analysis package for South African traffic conditions. [Thesis]. University of Johannesburg; 2014. Available from: http://hdl.handle.net/10210/10244
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Florida
15.
Zhou, Yian.
Privacy-Preserving Transportation Traffic Measurement in Intelligent Cyber-Physical Road Systems.
Degree: PhD, Computer Engineering - Computer and Information Science and Engineering, 2015, University of Florida
URL: https://ufdc.ufl.edu/UFE0049549
► Traffic volume measurement is critical in transportation engineering and vehicular networks. Existing research on traffic volume measurement mainly focuses on single-point traffic statistics. In this…
(more)
▼ Traffic volume measurement is critical in transportation engineering and vehicular networks. Existing research on
traffic volume measurement mainly focuses on single-point
traffic statistics. In this dissertation, we switch our view from single-point to multi-point, and study the important problem of privacy-preserving multi-point
traffic volume measurement in intelligent cyber-physical road systems (CPRS), which complements the state of art. The objective is to allow transportation authorities to automatically collect and efficiently measure the aggregate multi-point
traffic volume data from CPRS without learning information about individual vehicles.
Advisors/Committee Members: CHEN,SHIGANG (committee chair), PEIR,JIHKWON (committee member), XIA,YE (committee member), FANG,YUGUANG (committee member).
Subjects/Keywords: Bitmapped images; Estimators; Motor vehicle traffic; Simulations; Traffic estimation; Traffic flow; Traffic measurement; Traffic volume; Transportation; Vehicles; measurement – privacy – traffic – vehicle
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Zhou, Y. (2015). Privacy-Preserving Transportation Traffic Measurement in Intelligent Cyber-Physical Road Systems. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0049549
Chicago Manual of Style (16th Edition):
Zhou, Yian. “Privacy-Preserving Transportation Traffic Measurement in Intelligent Cyber-Physical Road Systems.” 2015. Doctoral Dissertation, University of Florida. Accessed January 16, 2021.
https://ufdc.ufl.edu/UFE0049549.
MLA Handbook (7th Edition):
Zhou, Yian. “Privacy-Preserving Transportation Traffic Measurement in Intelligent Cyber-Physical Road Systems.” 2015. Web. 16 Jan 2021.
Vancouver:
Zhou Y. Privacy-Preserving Transportation Traffic Measurement in Intelligent Cyber-Physical Road Systems. [Internet] [Doctoral dissertation]. University of Florida; 2015. [cited 2021 Jan 16].
Available from: https://ufdc.ufl.edu/UFE0049549.
Council of Science Editors:
Zhou Y. Privacy-Preserving Transportation Traffic Measurement in Intelligent Cyber-Physical Road Systems. [Doctoral Dissertation]. University of Florida; 2015. Available from: https://ufdc.ufl.edu/UFE0049549
Penn State University
16.
Deprator, Anthony Joseph.
Dynamic Traffic Control: The Treatment of Left Turns in an Urban Grid Network.
Degree: 2016, Penn State University
URL: https://submit-etda.libraries.psu.edu/catalog/wm117n96b
► Urban traffic congestion is a significant issue that costs hundreds of billions of dollars annually in the United States alone from delay, fuel consumption, and…
(more)
▼ Urban
traffic congestion is a significant issue that costs hundreds of billions of dollars annually in the United States alone from delay, fuel consumption, and environmental impacts (Schrank et al., 2105). Transportation engineers have tried to combat this congestion in a variety of ways, one of the most inexpensive methods being
traffic control. Various attempts have been made to quantify how
traffic control impacts the performance of urban transportation networks. A recent study examined the impacts of street directionality—specifically, the use of one-way vs. two-way streets—on
traffic network performance (Gayah and Daganzo, 2012) and found that the capacity of two-way street networks could always be increased by simply restricting left turn movements at signalized intersections. The additional travel distance imposed by doing so is more than made up for by the additional capacity that would be available at signalized intersections, and this results in shorter vehicle travel times when the network is operating at capacity. However, because this study focused only on capacity conditions (i.e., the maximum throughput allowed by the networks), it failed to consider the full range of all anticipated
traffic conditions, including both uncongested and congested states. Furthermore, this study only focused on static strategies in which one control scheme (either allowing or banning left turns) was applied at all times. This is a limitation as
traffic networks are dynamic, and
traffic control should also be dynamic to reflect the existing
traffic conditions.
In light of this, the current research examines the impact of accommodating or restricting left turn movements on
traffic network performance across the full range of
traffic states that can be expected. Grid networks of different sizes and with different link lengths were created and simulated in the Aimsun micro-simulation software to examine their performance under various left turn control strategies. The performance measures considered include: fuel consumption, vehicle emissions, and measures of
traffic performance—specifically, using the Network Exit Function (NEF) and the Macroscopic Fundamental Diagram (MFD). These performance measures are calculated and presented as a function of the current
traffic state, measured by the accumulation or number of vehicles using the
traffic network. This can be used to easily identify accumulations for which left turns should be allowed or restricted. Additionally, this study also examines the benefits of allowing or restricting left turns dynamically based on the current
traffic state. Overall, the results find that restricting left turns can be very beneficial as a network starts to become congested; however, restricting left turns actually reduces performance when the network is relatively empty. The optimal performance is thus achieved by allowing left turns when few vehicles are in the network and then restricting left turns when the network becomes more crowded. This dynamic strategy maximizes the
traffic performance…
Advisors/Committee Members: Vikash Varun Gayah, Thesis Advisor/Co-Advisor.
Subjects/Keywords: Traffic; Traffic Flow Theory; Traffic Operations; Traffic Control; Dynamic; Dynamic Traffic Control; Urban Grid Networks; Operations; Transportation
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APA ·
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APA (6th Edition):
Deprator, A. J. (2016). Dynamic Traffic Control: The Treatment of Left Turns in an Urban Grid Network. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/wm117n96b
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):
Deprator, Anthony Joseph. “Dynamic Traffic Control: The Treatment of Left Turns in an Urban Grid Network.” 2016. Thesis, Penn State University. Accessed January 16, 2021.
https://submit-etda.libraries.psu.edu/catalog/wm117n96b.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Deprator, Anthony Joseph. “Dynamic Traffic Control: The Treatment of Left Turns in an Urban Grid Network.” 2016. Web. 16 Jan 2021.
Vancouver:
Deprator AJ. Dynamic Traffic Control: The Treatment of Left Turns in an Urban Grid Network. [Internet] [Thesis]. Penn State University; 2016. [cited 2021 Jan 16].
Available from: https://submit-etda.libraries.psu.edu/catalog/wm117n96b.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Deprator AJ. Dynamic Traffic Control: The Treatment of Left Turns in an Urban Grid Network. [Thesis]. Penn State University; 2016. Available from: https://submit-etda.libraries.psu.edu/catalog/wm117n96b
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Drexel University
17.
Abichandani, Pramod.
Mathematical programming for multi-vehicle motion planning under communication constraints.
Degree: 2011, Drexel University
URL: http://hdl.handle.net/1860/3638
► Multi-Vehicle Motion Planning (MVMP) problems feature multiple vehicles traversing in their work space while avoiding collisions with each other and with other obstacles. Real world…
(more)
▼ Multi-Vehicle Motion Planning (MVMP) problems feature multiple vehicles traversing in their work space while avoiding collisions with each other and with other obstacles. Real world MVMP problems require the optimization of suitable performance measures under an array of constraints including kinematics, dynamics, communication connectivity, target tracking, and collision avoidance. The general MVMP problem can thus be formulated as a mathematical program (MP). In this thesis we present a mathematical programming framework that captures the salient features of the general MVMP problem. We use state-of-the-art solution algorithms and associated numerical solvers developed by our group to solve MVMP problems using this framework.To demonstrate the effectiveness of this framework, we investigate a variant of the general MVMP problem, viz. Multi-Vehicle Path Coordination wherein we generate time optimal velocity profiles for multiple robotic vehicles confined to move along predetermined and fixed paths. Each robot must follow a fixed and known path, arrive at its goal as quickly as possible (or at least not increase the time for the last robot to arrive at its goal) and stay in communication with other robots in the arena throughout its journey. We enforce a variety of communication connectivity constraints that incorporate deterministic and stochastic physical layer communication models to ensure that the robots can communicate with each other while in transit. We develop Partition Elimination constraints that assist in ensuring that the communication network is fully connected while the robots are in transit. The resulting mathematical programming models are solved using state-of-the-art highly efficient mixed integer nonlinear optimization tools developed by our group. Several conditions that affect the feasibility of the problem are identified and formalized.Both centralized and decentralized formulations are studied to demonstrate (i) the effect of communication connectivity requirements on robot velocity profiles; (ii) the dependence of the scenario completion time on communication connectivity requirements; (iii) the dependence of computation time on the number of robots; (iv) the tradeoff between the arrival time and the communication connectivity requirements. As MP solution algorithms and associated numerical solvers continue to develop, we anticipate that MP solution techniques will be applied to an increasing number of MVMP problems and this thesis may serve as a guide for future MVMP research.
Ph.D., Electrical Engineering – Drexel University, 2011
Advisors/Committee Members: Kam, Moshe, Benson, Hande Yurttan, 1976-, College of Engineering.
Subjects/Keywords: Electrical engineering; Programming (Mathematics); Traffic flow – Planning
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APA (6th Edition):
Abichandani, P. (2011). Mathematical programming for multi-vehicle motion planning under communication constraints. (Thesis). Drexel University. Retrieved from http://hdl.handle.net/1860/3638
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):
Abichandani, Pramod. “Mathematical programming for multi-vehicle motion planning under communication constraints.” 2011. Thesis, Drexel University. Accessed January 16, 2021.
http://hdl.handle.net/1860/3638.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Abichandani, Pramod. “Mathematical programming for multi-vehicle motion planning under communication constraints.” 2011. Web. 16 Jan 2021.
Vancouver:
Abichandani P. Mathematical programming for multi-vehicle motion planning under communication constraints. [Internet] [Thesis]. Drexel University; 2011. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/1860/3638.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Abichandani P. Mathematical programming for multi-vehicle motion planning under communication constraints. [Thesis]. Drexel University; 2011. Available from: http://hdl.handle.net/1860/3638
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Debrecen
18.
Lukovics, Tamás.
Monitoring of High Availabitility Enterprise Networks
.
Degree: DE – TEK – Informatikai Kar, 2013, University of Debrecen
URL: http://hdl.handle.net/2437/169442
► In my thesis I am presenting an enterprise class network of a fictional company that implements multiple ISO OSI layer 2 and 3 redundancy protocols…
(more)
▼ In my thesis I am presenting an enterprise class network of a fictional company that implements multiple ISO OSI layer 2 and 3 redundancy protocols for higher availability. There are two sites, one of them is the central office and the other is a dedicated site, hosting servers. While the employees are trying to access the company's intranet website hosted on the Web-Server in the server farm, I am generating artificial link-level errors, thereby I am able to analyze the convergence of a network using cross-layer evaluation technique.
Advisors/Committee Members: Orosz, Péter (advisor).
Subjects/Keywords: computer networks;
network traffic flow analysis
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APA (6th Edition):
Lukovics, T. (2013). Monitoring of High Availabitility Enterprise Networks
. (Thesis). University of Debrecen. Retrieved from http://hdl.handle.net/2437/169442
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):
Lukovics, Tamás. “Monitoring of High Availabitility Enterprise Networks
.” 2013. Thesis, University of Debrecen. Accessed January 16, 2021.
http://hdl.handle.net/2437/169442.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lukovics, Tamás. “Monitoring of High Availabitility Enterprise Networks
.” 2013. Web. 16 Jan 2021.
Vancouver:
Lukovics T. Monitoring of High Availabitility Enterprise Networks
. [Internet] [Thesis]. University of Debrecen; 2013. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/2437/169442.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lukovics T. Monitoring of High Availabitility Enterprise Networks
. [Thesis]. University of Debrecen; 2013. Available from: http://hdl.handle.net/2437/169442
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Ottawa
19.
Tao, Yanjie.
Innovative Approaches for Short-Term Vehicular Volume Prediction In Intelligent Transportation System
.
Degree: 2020, University of Ottawa
URL: http://hdl.handle.net/10393/40441
► Accurate and timely short-term traffic flow predictions can provide useful traffic volume information beforehand and help people make better route decisions, which plays a vital…
(more)
▼ Accurate and timely short-term traffic flow predictions can provide useful traffic volume
information beforehand and help people make better route decisions, which plays a vital
role in the Intelligent Transport System (ITS). Currently, mainly two problems are focused
in this field. The first one is the spatiotemporal relations mining problem. With the road networking in ITS, the capture of spatiotemporal correlations is significant for conducting
an accurate traffic flow prediction. However, most of the previous studies rely on the information collected from the single road point, which lost many useful road information. The second one is the model adaptability problem. In fact, simple road contexts such as suburban highways are preferred by previous researches due to simplex and easily captured features. However, with the progress of ITS, a great prediction model is supposed to fit into more complex road conditions. Therefore, how to make the designed models fit into more complicated prediction environments is necessary and critical.
Currently, mainly two sorts of approaches, statistic-based and machine learning (ML)-
based are used for short-term traffic flow predictions, but both of them face challenges
mentioned above. Statistic-based models generally have better model interpretability, but
delicate interpretative formulas conversely limit the model structure flexibility. As for the ML-based models, although they have a more flexible model structure and stronger non-linear pattern capture ability, the high training cost is a remarkable drawback. In this thesis, these two categories of models are both optimized to achieve a more accurate prediction. Based on the Vector Autoregressive Moving Average model (VARMA), an innovative Delay-based Spatiotemporal ARIMA (DSTARMA) is proposed to improve the spatiotemporal features mining ability of statistic-based models. This model focus on the travel delay problem, which is represented by a weighting matrix to help describe the real spatiotemporal correlations. As for the improvement of the ML-based category, an innovative Selected Stacked Gated Recurrent Units model (SSGRU) is proposed, particularly which includes a linear regression data pre-processing system to analyzes spatiotemporal relations. Further, for enhancing the model adaptability, an optimized model Multivariable Delay-based GRU (MDGRU), based on SSGRU is designed. This model extends the prediction scenario to a more complex traffic condition with a more compact model structure, and also the travel delay is considered into the prediction process. The prediction results show it outperforms many other similar models.
Subjects/Keywords: ITS;
Traffic flow prediction;
RNN;
VARIMA
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Manager
APA (6th Edition):
Tao, Y. (2020). Innovative Approaches for Short-Term Vehicular Volume Prediction In Intelligent Transportation System
. (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/40441
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):
Tao, Yanjie. “Innovative Approaches for Short-Term Vehicular Volume Prediction In Intelligent Transportation System
.” 2020. Thesis, University of Ottawa. Accessed January 16, 2021.
http://hdl.handle.net/10393/40441.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Tao, Yanjie. “Innovative Approaches for Short-Term Vehicular Volume Prediction In Intelligent Transportation System
.” 2020. Web. 16 Jan 2021.
Vancouver:
Tao Y. Innovative Approaches for Short-Term Vehicular Volume Prediction In Intelligent Transportation System
. [Internet] [Thesis]. University of Ottawa; 2020. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10393/40441.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Tao Y. Innovative Approaches for Short-Term Vehicular Volume Prediction In Intelligent Transportation System
. [Thesis]. University of Ottawa; 2020. Available from: http://hdl.handle.net/10393/40441
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Delft University of Technology
20.
Vlaar, T.J. (author).
Car following model of the distracted driver.
Degree: 2015, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:b20d309b-e0de-4b17-a75f-cde32fc30dfd
► Driving a car is common but complex everyday task. Nowadays the mobile phone, infotainment and navigation systems are used while driving. These distract the driver…
(more)
▼ Driving a car is common but complex everyday task. Nowadays the mobile phone, infotainment and navigation systems are used while driving. These distract the driver from their driving task. What is the implication on driving safety? How is the car following behaviour influenced by distraction? Can this be described by a car following model? The multiple resource model tells us that there is limited resources to perform a task. Consequently when a driver performs a secondary task it is expected that its performance decrease. The car following model should be able to capture this behaviour. In this study data from a simulator experiment performed by IFSTTAR is used. Participants drove with and without a visual secondary (VST) task. The obtained driving behaviour is then modelled using the Helly and IDM model. With a traffic flow model, the influence of distracted driving on traffic flow is studied. Analysis of the simulator data showed that against expectations the subjects with VST drive closer to the lead vehicle with less speed difference. Their car following performance increased. This behavior can be explained by assuming an underload situation, where performance is suboptimal, when driving without VST. The Helly model can be used to describe the different conditions by using different parameters. The subjects are more vigilant when performing a secondary task. This better car following performance leads to an increased road capacity for the visual ST condition.
BMD
Biomech
Mechanical, Maritime and Materials Engineering
Advisors/Committee Members: Happee, R. (mentor).
Subjects/Keywords: distractio; car following; simulator experiment; traffic flow
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Manager
APA (6th Edition):
Vlaar, T. J. (. (2015). Car following model of the distracted driver. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:b20d309b-e0de-4b17-a75f-cde32fc30dfd
Chicago Manual of Style (16th Edition):
Vlaar, T J (author). “Car following model of the distracted driver.” 2015. Masters Thesis, Delft University of Technology. Accessed January 16, 2021.
http://resolver.tudelft.nl/uuid:b20d309b-e0de-4b17-a75f-cde32fc30dfd.
MLA Handbook (7th Edition):
Vlaar, T J (author). “Car following model of the distracted driver.” 2015. Web. 16 Jan 2021.
Vancouver:
Vlaar TJ(. Car following model of the distracted driver. [Internet] [Masters thesis]. Delft University of Technology; 2015. [cited 2021 Jan 16].
Available from: http://resolver.tudelft.nl/uuid:b20d309b-e0de-4b17-a75f-cde32fc30dfd.
Council of Science Editors:
Vlaar TJ(. Car following model of the distracted driver. [Masters Thesis]. Delft University of Technology; 2015. Available from: http://resolver.tudelft.nl/uuid:b20d309b-e0de-4b17-a75f-cde32fc30dfd
Delft University of Technology
21.
Hofland, F.P.J. (author).
Optimal traffic flow at the IJ, Amsterdam: Investigation of the influence of the Java bridge and the Stenen Hoofd bridge on the traffic flow at the IJ in 2025 from the perspective of the recreational fleet.
Degree: 2016, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:65558b94-a2b9-4d8d-aabd-6194349d4902
► The city of Amsterdam increases with approximately 10,000 inhabitants per year and Amsterdam-North is strongly under development attracting housing, employment and (re)creational activities. This is…
(more)
▼ The city of Amsterdam increases with approximately 10,000 inhabitants per year and Amsterdam-North is strongly under development attracting housing, employment and (re)creational activities. This is expected to induce a growth of 65% in pedestrians and cyclists, referred to as slow
traffic. crossing the river IJ in 2025. The city ferry system, that currently facilitates the connection between the river banks for slow
traffic, has almost reached its maximum. Therefore, the connection between the river banks of the IJ needs to be improved in order to meet the future demand of slow
traffic by guaranteeing a fast and safe connection. This research investigates the possibility of bridges at the Java-island and the Stenen Hoofd providing a continuous available connection for slow
traffic, considering the area between the Stenen Hoofd and the Schellingwouderbridge. The main goal is to determine the influence of the Java bridge and the Stenen Hoofd bridge on the passage time of the recreational fleet on water and pedestrians and cyclists crossing the bridges in 2025. As this is influenced by the bridge opening regime applied to these bridges, the optimal bridge opening regime is determined in case the Java bridge and/or the Stenen Hoofd bridge are present at the IJ. Finding the optimal bridge opening regime is an optimization process that is done by defining, evaluating and improving the performance of a certain bridge opening regime. The performance of a certain bridge opening regime is determined by executing simulations with SIVAK II. This model simulates the behaviour of the
traffic flow of both vessels and road
traffic within a network of (inland) waterways including hydraulic structures, like bridges. If the optimal bridge opening regime is applied to the Java bridge and the Stenen Hoofd bridge, the following can be concluded. The delay in travel time of the recreational fleet navigating between the Stenen Hoofd and the Schellingwouderbidge depends on the number of bridges. This delay can increase up to 14 minutes if both the Java bridge and the Stenen Hoofd bridge are present. An average number of four vessels has to wait prior to passing a bridge, which can increase up to 15. The mean waiting time for slow
traffic, when being halted during bridge opening operations, amounts approximately five minutes. This corresponds with around 120 pedestrians and cyclists on average, which can increase up to 500, to be halted during a bridge opening operation. Concerning the influence of the presence of the Java bridge and the Stenen Hoofd bridge, it can be stated that the efficiency of the navigation
flow of the recreational fleet increases when the number of bridges at the IJ is reduced. Furthermore, it can be stated that pedestrians and cyclists significantly benefit from the presence of bridges. As this study focuses on the impact of the optimal bridge opening regime on the navigation
flow of the recreational fleet and slow
traffic only, it is recommended to take other criteria into account as well when deciding on the number…
Advisors/Committee Members: Vellinga, T. (mentor), Verheij, H.J. (mentor), Molenaar, W.F. (mentor), Bloemendal, M. (mentor).
Subjects/Keywords: IJ; optimal traffic flow; SIVAK; recreational fleet
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Manager
APA (6th Edition):
Hofland, F. P. J. (. (2016). Optimal traffic flow at the IJ, Amsterdam: Investigation of the influence of the Java bridge and the Stenen Hoofd bridge on the traffic flow at the IJ in 2025 from the perspective of the recreational fleet. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:65558b94-a2b9-4d8d-aabd-6194349d4902
Chicago Manual of Style (16th Edition):
Hofland, F P J (author). “Optimal traffic flow at the IJ, Amsterdam: Investigation of the influence of the Java bridge and the Stenen Hoofd bridge on the traffic flow at the IJ in 2025 from the perspective of the recreational fleet.” 2016. Masters Thesis, Delft University of Technology. Accessed January 16, 2021.
http://resolver.tudelft.nl/uuid:65558b94-a2b9-4d8d-aabd-6194349d4902.
MLA Handbook (7th Edition):
Hofland, F P J (author). “Optimal traffic flow at the IJ, Amsterdam: Investigation of the influence of the Java bridge and the Stenen Hoofd bridge on the traffic flow at the IJ in 2025 from the perspective of the recreational fleet.” 2016. Web. 16 Jan 2021.
Vancouver:
Hofland FPJ(. Optimal traffic flow at the IJ, Amsterdam: Investigation of the influence of the Java bridge and the Stenen Hoofd bridge on the traffic flow at the IJ in 2025 from the perspective of the recreational fleet. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Jan 16].
Available from: http://resolver.tudelft.nl/uuid:65558b94-a2b9-4d8d-aabd-6194349d4902.
Council of Science Editors:
Hofland FPJ(. Optimal traffic flow at the IJ, Amsterdam: Investigation of the influence of the Java bridge and the Stenen Hoofd bridge on the traffic flow at the IJ in 2025 from the perspective of the recreational fleet. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:65558b94-a2b9-4d8d-aabd-6194349d4902
University of Victoria
22.
Shi, Peilin.
Minimax robust designs for misspecified regression models.
Degree: Department of Mathematics and Statistics, 2018, University of Victoria
URL: https://dspace.library.uvic.ca//handle/1828/10291
► Minimax robust designs are studied for regression models with possible misspecified response functions. These designs, minimizing the maximum of the mean squared error matrix, can…
(more)
▼ Minimax robust designs are studied for regression models with possible misspecified response functions. These designs, minimizing the maximum of the mean squared error matrix, can control the bias caused by model misspecification and the desired efficiency through one parameter. Using nonsmooth optimization technique, we derive the minimax designs analytically for misspecified regression models. This extends the results in Heo, Schmuland and Wiens (2001). Several examples are discussed for approximately polynomial regression.
Advisors/Committee Members: Ye, Jane J. (supervisor), Zhou, Julie (supervisor).
Subjects/Keywords: Traffic flow; Mathematical models; Regression; Misspecified regression
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to Zotero / EndNote / Reference
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APA (6th Edition):
Shi, P. (2018). Minimax robust designs for misspecified regression models. (Thesis). University of Victoria. Retrieved from https://dspace.library.uvic.ca//handle/1828/10291
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):
Shi, Peilin. “Minimax robust designs for misspecified regression models.” 2018. Thesis, University of Victoria. Accessed January 16, 2021.
https://dspace.library.uvic.ca//handle/1828/10291.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Shi, Peilin. “Minimax robust designs for misspecified regression models.” 2018. Web. 16 Jan 2021.
Vancouver:
Shi P. Minimax robust designs for misspecified regression models. [Internet] [Thesis]. University of Victoria; 2018. [cited 2021 Jan 16].
Available from: https://dspace.library.uvic.ca//handle/1828/10291.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Shi P. Minimax robust designs for misspecified regression models. [Thesis]. University of Victoria; 2018. Available from: https://dspace.library.uvic.ca//handle/1828/10291
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Montana State University
23.
Karjala, Sarah Renee.
Estimating quality of traffic flow on two-lane highways.
Degree: MS, College of Engineering, 2008, Montana State University
URL: https://scholarworks.montana.edu/xmlui/handle/1/1607
► Since the publication of the 2000 Highway Capacity Manual (HCM), there have been several studies that indicate that the HCM equations for Percent Time-Spent- Following…
(more)
▼ Since the publication of the 2000 Highway Capacity Manual (HCM), there have been several studies that indicate that the HCM equations for Percent Time-Spent- Following (PTSF) on two-lane highways do not correspond to field-based measurements. This discrepancy was the motivation for this research project. The purpose of this project was two-fold. First, it aimed to find an alternative performance measure to PTSF that could be measured directly in the field and could adequately describe the quality of
traffic flow. Secondly, the project aimed to investigate the inter-vehicular interaction between consecutive vehicles traveling on the same lane of two-lane rural highways. Both studies were empirical in nature and utilized field data gathered from rural two-lane and four-lane highways in the state of Montana. Six performance measures for two-lane highways were investigated; they were: average travel speed, average travel speed of passenger cars, average travel speed as a percent of free-
flow speed, average travel speed of passenger cars as a percent of free-
flow speed of passenger cars, percent followers, and follower density. The performance measures were evaluated based on their level of association with major platooning variables. Among all performance measures investigated, follower density and percent followers exhibited the highest correlation to platooning variables, respectively. Overall, follower density was recommended as the best performance measure for two-lane highways. Based on the fact that follower density is a headway-based service measure, the second study aimed to achieve a better understanding of car-following interaction on two-lane rural highways. Car-following interaction was studied by examining headway distributions, speed-headway relationships, and percent followers and
flow relationships. The study found that car-following interaction generally ceases when headways exceed a value of approximately six seconds. Also, a significant proportion of drivers choose to maintain relatively short headways while following other vehicles on two-lane highways regardless of passing restrictions.
Advisors/Committee Members: Chairperson, Graduate Committee: Ahmed Al-Kaisy (advisor).
Subjects/Keywords: Roads.; Traffic flow.
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Karjala, S. R. (2008). Estimating quality of traffic flow on two-lane highways. (Masters Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/1607
Chicago Manual of Style (16th Edition):
Karjala, Sarah Renee. “Estimating quality of traffic flow on two-lane highways.” 2008. Masters Thesis, Montana State University. Accessed January 16, 2021.
https://scholarworks.montana.edu/xmlui/handle/1/1607.
MLA Handbook (7th Edition):
Karjala, Sarah Renee. “Estimating quality of traffic flow on two-lane highways.” 2008. Web. 16 Jan 2021.
Vancouver:
Karjala SR. Estimating quality of traffic flow on two-lane highways. [Internet] [Masters thesis]. Montana State University; 2008. [cited 2021 Jan 16].
Available from: https://scholarworks.montana.edu/xmlui/handle/1/1607.
Council of Science Editors:
Karjala SR. Estimating quality of traffic flow on two-lane highways. [Masters Thesis]. Montana State University; 2008. Available from: https://scholarworks.montana.edu/xmlui/handle/1/1607
University of Melbourne
24.
Panda, Rabindra.
Large scale real-time traffic flow prediction using SCATS volume data.
Degree: 2016, University of Melbourne
URL: http://hdl.handle.net/11343/130024
► Road traffic congestion is a global issue that results in significant wastage of time and resources. Rising population, urbanisation, growing economies and affordable personal vehicles…
(more)
▼ Road traffic congestion is a global issue that results in significant wastage of time and resources. Rising population, urbanisation, growing economies and affordable personal vehicles aggravate the issue. Many urban cities have been trying to mitigate this by expanding and modernising the transportation infrastructure. Even though increasing the road capacity accommodates the travel demands, studies have shown this does not eliminate the congestion problem. Hence, since 1970’s advanced traffic management systems have been used to address the issue of congestion. But for these systems to increase their operational efficiencies and fully realise their effectiveness, they need to have the predictive capabilities in the short term, usually ranging between few seconds to few hours. The research in short term traffic prediction has been active since the 1970’s. Numerous models have been proposed to use the traffic data collected by in- ductive loop detectors for short term traffic prediction. Most of the works have shown promising results through experiments at particular locations, however we are still to find a robust and globally adaptable solution. In last decade the attention have shifted from theoretically well established parametric methods to non parametric data driven algorithms. This work is an extension to that.
Neural networks have always been one of the most capable mathematical models that can model complex non-linear relations. Up to 2006, their use have been hindered by practical issues related to the training. But recent breakthroughs in new ways of training deep neural architectures have made them reemerged as victors by realising the capabilities they had promised. In this thesis we study and extend their applications to short term traffic predictions. We applied three deep recurrent neural networks (Simple RNN, LSTM and GRU) in predicting the short term traffic volumes. The goal was to use both the temporal and spatial relationships that are present in the traffic flow data. We used these networks at univariate and multivariate settings to make predictions at single location and multiple locations respectively. For this work we used the volume data collected by VicRoads in Melbourne. We compared the results of our work with several existing methods and found promising results.
Subjects/Keywords: traffic flow prediction; deep neural networks; LSTM
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APA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Panda, R. (2016). Large scale real-time traffic flow prediction using SCATS volume data. (Masters Thesis). University of Melbourne. Retrieved from http://hdl.handle.net/11343/130024
Chicago Manual of Style (16th Edition):
Panda, Rabindra. “Large scale real-time traffic flow prediction using SCATS volume data.” 2016. Masters Thesis, University of Melbourne. Accessed January 16, 2021.
http://hdl.handle.net/11343/130024.
MLA Handbook (7th Edition):
Panda, Rabindra. “Large scale real-time traffic flow prediction using SCATS volume data.” 2016. Web. 16 Jan 2021.
Vancouver:
Panda R. Large scale real-time traffic flow prediction using SCATS volume data. [Internet] [Masters thesis]. University of Melbourne; 2016. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/11343/130024.
Council of Science Editors:
Panda R. Large scale real-time traffic flow prediction using SCATS volume data. [Masters Thesis]. University of Melbourne; 2016. Available from: http://hdl.handle.net/11343/130024
Reykjavík University
25.
Grétar Mar Hreggviðsson 1974-.
Bættar spár með umferðarlíkani höfuðborgarsvæðisins
.
Degree: 2013, Reykjavík University
URL: http://hdl.handle.net/1946/14004
► Eftirfarandi rannsókn er á sviði umferðar og skipulags og er athugun á því hvort hægt sé að bæta spáhluta umferðarlíkans höfuðborgarsvæðisins með aukinni greiningu og…
(more)
▼ Eftirfarandi rannsókn er á sviði umferðar og skipulags og er athugun á því hvort hægt sé að bæta spáhluta umferðarlíkans höfuðborgarsvæðisins með aukinni greiningu og betri flokkun gagna um magn atvinnuhúsnæðis (skipulagstalna) á höfuðborgarsvæðinu
Rannsóknin miðar að því minnka frávik í spám fyrir grunnár líkansins. Almennt er talið æskilegt að byggja spár á grunnári því þannig er hægt að stilla líkanið af út frá þekktu ástandi, sem eru umferðartalningar grunnársins. Frávik í spám grunnárs geta skekkt framtíðarspár og því nauðsynlegt að þau séu eins lítil og mögulegt er.
Rannsóknin byggir á rýni vísindagreina, greiningu á skipulagstölum og líkankeyrslum. Með rýni vísindagreina var augum sérstaklega beint að frávikum í umferðarspám og leiðum til að draga úr þeim. Við greiningu skipulagstalna var gerð tilraun með nýja flokkun gagna þar sem byggt er á notkun húsnæðis í stað gjaldflokka líkt og gert hefur verið. Í líkankeyrslum voru borin saman hin ýmsu tilvik og reynt að finna það tilfelli sem gaf bestu nálgun við umferðartalningar.
Umtalsverður árangur náðist í því að lækka frávik; frávikum yfir 5000 bílum fækkaði um 24% og fyrir götur með yfir 5000 bíla umferð fækkaði þeim um 29%. Auk þess leiddi rannsóknin í ljós misræmi í skipulagsgögnum þar sem gjaldflokki og skráðri notkun húsnæðis ber ekki saman. Niðurstöður rannsóknarinnar staðfesta því að hægt er að lækka frávik í spám með bættri flokkun skipulagstalna.
Subjects/Keywords: Byggingarverkfræði;
Umferðarmál;
Skipulagsmál;
Traffic flow;
Regional planning
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APA (6th Edition):
1974-, G. M. H. (2013). Bættar spár með umferðarlíkani höfuðborgarsvæðisins
. (Thesis). Reykjavík University. Retrieved from http://hdl.handle.net/1946/14004
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):
1974-, Grétar Mar Hreggviðsson. “Bættar spár með umferðarlíkani höfuðborgarsvæðisins
.” 2013. Thesis, Reykjavík University. Accessed January 16, 2021.
http://hdl.handle.net/1946/14004.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
1974-, Grétar Mar Hreggviðsson. “Bættar spár með umferðarlíkani höfuðborgarsvæðisins
.” 2013. Web. 16 Jan 2021.
Vancouver:
1974- GMH. Bættar spár með umferðarlíkani höfuðborgarsvæðisins
. [Internet] [Thesis]. Reykjavík University; 2013. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/1946/14004.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
1974- GMH. Bættar spár með umferðarlíkani höfuðborgarsvæðisins
. [Thesis]. Reykjavík University; 2013. Available from: http://hdl.handle.net/1946/14004
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
California State University – Sacramento
26.
Ramamoorthy, Jayaprabhu.
Optimizing traffic flow based on vehicle count.
Degree: MS, Electrical and Electronic Engineering, 2017, California State University – Sacramento
URL: http://hdl.handle.net/10211.3/190726
► One method to build an intelligent traffic control system is based on the estimation of traffic density using real-time video and image processing techniques. The…
(more)
▼ One method to build an intelligent
traffic control system is based on the estimation of
traffic density using real-time video and image processing techniques. The idea is to control the
traffic by determining the density on each side of the road and controlling the signal based on the density information. This project introduces an algorithm to determine the number of vehicles on each lane. The vehicle density can be compared with other directions in order to control the
traffic signal and minimize the stop and wait time at intersections.
Advisors/Committee Members: Belkhouche, Fethi.
Subjects/Keywords: Vehicle count; Traffic flow; Image processing
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APA ·
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Manager
APA (6th Edition):
Ramamoorthy, J. (2017). Optimizing traffic flow based on vehicle count. (Masters Thesis). California State University – Sacramento. Retrieved from http://hdl.handle.net/10211.3/190726
Chicago Manual of Style (16th Edition):
Ramamoorthy, Jayaprabhu. “Optimizing traffic flow based on vehicle count.” 2017. Masters Thesis, California State University – Sacramento. Accessed January 16, 2021.
http://hdl.handle.net/10211.3/190726.
MLA Handbook (7th Edition):
Ramamoorthy, Jayaprabhu. “Optimizing traffic flow based on vehicle count.” 2017. Web. 16 Jan 2021.
Vancouver:
Ramamoorthy J. Optimizing traffic flow based on vehicle count. [Internet] [Masters thesis]. California State University – Sacramento; 2017. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10211.3/190726.
Council of Science Editors:
Ramamoorthy J. Optimizing traffic flow based on vehicle count. [Masters Thesis]. California State University – Sacramento; 2017. Available from: http://hdl.handle.net/10211.3/190726
University of Louisville
27.
Bernhardt, Peter, 1973-.
Development of a simulation and evaluation environment for a traffic flow analysis system.
Degree: MS, 2010, University of Louisville
URL: 10.18297/etd/103
;
https://ir.library.louisville.edu/etd/103
► A system for analysis of the traffic flow on public streets and highways through the use of Floating Car Data (FCD) relies completely on the…
(more)
▼ A system for analysis of the
traffic flow on public streets and highways through the use of Floating Car Data (FCD) relies completely on the number of simultaneously contributing vehicles, a fact that is no barrier for the phases of conception and development but poses a serious issue for the testing of such a system. Especially for smaller institutions or companies where the ability and resources to field the required number of participants is not given which in turn leads to the need for computational support to substitute the use of real vehicles by simulation. This thesis focuses on the task of the design and development of a simulation and evaluation environment for a pre-developed
Traffic Flow Analysis System. The objective of this environment is to simulate the behavior of real vehicles on the existing street network including their most relevant characteristics for the purpose of congestion recognition. It is shown how simulation methods can be effectively used to create such an environment while using mathematical methods to model the characteristics of the participating system parts (vehicles) as well as the environmental influence on the external communication components (GPS, Radio).
Advisors/Committee Members: Biles, William E..
Subjects/Keywords: Simulation; Traffic flow
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APA (6th Edition):
Bernhardt, Peter, 1. (2010). Development of a simulation and evaluation environment for a traffic flow analysis system. (Masters Thesis). University of Louisville. Retrieved from 10.18297/etd/103 ; https://ir.library.louisville.edu/etd/103
Chicago Manual of Style (16th Edition):
Bernhardt, Peter, 1973-. “Development of a simulation and evaluation environment for a traffic flow analysis system.” 2010. Masters Thesis, University of Louisville. Accessed January 16, 2021.
10.18297/etd/103 ; https://ir.library.louisville.edu/etd/103.
MLA Handbook (7th Edition):
Bernhardt, Peter, 1973-. “Development of a simulation and evaluation environment for a traffic flow analysis system.” 2010. Web. 16 Jan 2021.
Vancouver:
Bernhardt, Peter 1. Development of a simulation and evaluation environment for a traffic flow analysis system. [Internet] [Masters thesis]. University of Louisville; 2010. [cited 2021 Jan 16].
Available from: 10.18297/etd/103 ; https://ir.library.louisville.edu/etd/103.
Council of Science Editors:
Bernhardt, Peter 1. Development of a simulation and evaluation environment for a traffic flow analysis system. [Masters Thesis]. University of Louisville; 2010. Available from: 10.18297/etd/103 ; https://ir.library.louisville.edu/etd/103
The Ohio State University
28.
Chandrangsu, Srisook.
Mathematical models of traffic flow based on the energy
concept.
Degree: PhD, Graduate School, 1973, The Ohio State University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486741228238407
Subjects/Keywords: Engineering; Traffic flow
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APA ·
Chicago ·
MLA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Chandrangsu, S. (1973). Mathematical models of traffic flow based on the energy
concept. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1486741228238407
Chicago Manual of Style (16th Edition):
Chandrangsu, Srisook. “Mathematical models of traffic flow based on the energy
concept.” 1973. Doctoral Dissertation, The Ohio State University. Accessed January 16, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=osu1486741228238407.
MLA Handbook (7th Edition):
Chandrangsu, Srisook. “Mathematical models of traffic flow based on the energy
concept.” 1973. Web. 16 Jan 2021.
Vancouver:
Chandrangsu S. Mathematical models of traffic flow based on the energy
concept. [Internet] [Doctoral dissertation]. The Ohio State University; 1973. [cited 2021 Jan 16].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486741228238407.
Council of Science Editors:
Chandrangsu S. Mathematical models of traffic flow based on the energy
concept. [Doctoral Dissertation]. The Ohio State University; 1973. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486741228238407
University of Ballarat
29.
Lierkamp, Darren.
A new ramp metering control algorithm for optimizing freeway travel times.
Degree: 2006, University of Ballarat
URL: http://researchonline.ballarat.edu.au:8080/vital/access/HandleResolver/1959.17/52943
"In many cities around the world traffic congestion has been increasing faster than can be dealt with by new road construction. To resolve this problem traffic management devices and technology such as ramp meters are increasingly being utilized." – leaf 1.
Masters of Information Technology
Subjects/Keywords: Traffic flow; Travel time (Traffic engineering); Traffic congestion; Mathematical models; Australian Digital Thesis
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APA ·
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Manager
APA (6th Edition):
Lierkamp, D. (2006). A new ramp metering control algorithm for optimizing freeway travel times. (Thesis). University of Ballarat. Retrieved from http://researchonline.ballarat.edu.au:8080/vital/access/HandleResolver/1959.17/52943
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):
Lierkamp, Darren. “A new ramp metering control algorithm for optimizing freeway travel times.” 2006. Thesis, University of Ballarat. Accessed January 16, 2021.
http://researchonline.ballarat.edu.au:8080/vital/access/HandleResolver/1959.17/52943.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lierkamp, Darren. “A new ramp metering control algorithm for optimizing freeway travel times.” 2006. Web. 16 Jan 2021.
Vancouver:
Lierkamp D. A new ramp metering control algorithm for optimizing freeway travel times. [Internet] [Thesis]. University of Ballarat; 2006. [cited 2021 Jan 16].
Available from: http://researchonline.ballarat.edu.au:8080/vital/access/HandleResolver/1959.17/52943.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lierkamp D. A new ramp metering control algorithm for optimizing freeway travel times. [Thesis]. University of Ballarat; 2006. Available from: http://researchonline.ballarat.edu.au:8080/vital/access/HandleResolver/1959.17/52943
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Stellenbosch University
30.
Movius, Samantha Jane.
Self-organisation in traffic Signal control algorithms.
Degree: PhD, Industrial Engineering, 2018, Stellenbosch University
URL: http://hdl.handle.net/10019.1/103301
► ENGLISH ABSTRACT: Two popular types of traffic signal control are fixed-time control and vehicle-actuated control. The latter method involves switching traffic signals based on detected…
(more)
▼ ENGLISH ABSTRACT: Two popular types of traffic signal control are fixed-time control and vehicle-actuated control.
The latter method involves switching traffic signals based on detected traffic ows and thus offers more
exibility than the former, which relies solely on cyclic, predetermined signal phases.
The notion of self-organisation has relatively recently been proposed as an alternative approach
towards improving traffic signal control, particularly during periods of light traffic flow, due to its flexible nature and its potential to result in emergent behaviour.
The effectiveness of five self-organising traffic signal control strategies from the literature, as
well as a fixed-time control strategy, have previously been compared in a simulated environment.
Various shortcomings of three of these algorithms are pointed out in this dissertation
and algorithmic improvements are suggested to remedy these defficiencies. The significant improvements
resulting from these algorithmic modifications are then quantified by means of their implementation in a newly designed agent-based, microscopic traffic simulation model.
Two novel self-organising traffic control algorithms are also proposed in this dissertation. These algorithms have been designed in such a way as to avoid certain shortcomings discovered in the aforementioned algorithms. The two novel algorithms, together with the improved versions of the three existing algorithms and the remaining pair of algorithms from the literature, are
also subjected to thorough testing in the aforementioned simulation framework in terms of their propensity to facilitate the formation of green waves and to recover from various disruptions (such as road closures or abnormal traffic induced by large events) within the context of both gridded street networks and corridors with approaching side roads. All eight algorithms are
finally implemented in a simulation model representing an existing road network in order to compare and evaluate the effectiveness of these algorithms within the context of a real-world scenario.
It is found that the two newly proposed algorithms outperform existing self-organising traffic
signal control algorithms under certain traffic conditions and road network topologies.
AFRIKAANSE OPSOMMING: Twee populêre tipes verkeersbeheertegnieke is vaste-tyd beheer en voertuig-geïnduseerde beheer.
Volgens laasgenoemde tegniek berus die wisseling van verkeerseine op die meting van verkeersvloei wat meer buigsaamheid bied as die eersgenoemde tegniek wat berus op sikliese, voorafbepaalde seinfases. Die begrip van self-organisering is relatief onlangs as 'n alternatief
vir verbeterde verkeerseinbeheer voorgestel as gevolg van die buigsame aard en die potensiaal daarvan om te lei na ontluikende gedrag.
Die doeltreffendheid van vyf self-organiserende verkeersbeheerstrategieë uit die literatuur is reeds
voorheen in 'n gesimuleerde omgewing vergelyk. Verskeie tekortkominge van drie van hierdie
algoritmes word in hierdie proefskrif uitgewys en algoritmiese…
Advisors/Committee Members: Van Vuuren, J. H., Stellenbosch University. Faculty of Engineering. Dept. of Industrial Engineering..
Subjects/Keywords: Traffic signs and signals – Control systems; Traffic flow – Automatic detection; UCTD; Electronic traffic controls
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APA ·
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MLA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Movius, S. J. (2018). Self-organisation in traffic Signal control algorithms. (Doctoral Dissertation). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/103301
Chicago Manual of Style (16th Edition):
Movius, Samantha Jane. “Self-organisation in traffic Signal control algorithms.” 2018. Doctoral Dissertation, Stellenbosch University. Accessed January 16, 2021.
http://hdl.handle.net/10019.1/103301.
MLA Handbook (7th Edition):
Movius, Samantha Jane. “Self-organisation in traffic Signal control algorithms.” 2018. Web. 16 Jan 2021.
Vancouver:
Movius SJ. Self-organisation in traffic Signal control algorithms. [Internet] [Doctoral dissertation]. Stellenbosch University; 2018. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10019.1/103301.
Council of Science Editors:
Movius SJ. Self-organisation in traffic Signal control algorithms. [Doctoral Dissertation]. Stellenbosch University; 2018. Available from: http://hdl.handle.net/10019.1/103301
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Open Access Theses and Dissertations