subject:(on ramp queue estimation)

Queensland University of Technology

1. Jiang, Rui. Strategies for rapid congestion recovery using ramp metering.

Degree: 2014, Queensland University of Technology

► This research investigated strategies for motorway congestion management from a different angle: that is, how to quickly recover motorway from congestion at the end of… (more)

Subjects/Keywords: motorway congestion; rapid congestion recovery; ramp metering; cell transmission model; on-ramp queue estimation; queue management; ramp coordination; micro-simulation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Jiang, R. (2014). Strategies for rapid congestion recovery using ramp metering. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/68096/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jiang, Rui. “Strategies for rapid congestion recovery using ramp metering.” 2014. Thesis, Queensland University of Technology. Accessed April 18, 2021. https://eprints.qut.edu.au/68096/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jiang, Rui. “Strategies for rapid congestion recovery using ramp metering.” 2014. Web. 18 Apr 2021.

Vancouver:

Jiang R. Strategies for rapid congestion recovery using ramp metering. [Internet] [Thesis]. Queensland University of Technology; 2014. [cited 2021 Apr 18]. Available from: https://eprints.qut.edu.au/68096/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jiang R. Strategies for rapid congestion recovery using ramp metering. [Thesis]. Queensland University of Technology; 2014. Available from: https://eprints.qut.edu.au/68096/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Debrecen

2. Ozan, Mine. Queing theory of software .

Degree: DE – TEK – Informatikai Kar, 2013, University of Debrecen

URL: http://hdl.handle.net/2437/156190

► Queuing Networks (QNs) are a widely used performance modeling notation, which has been successfully applied to many kind of systems. Although the wealth of scientific… (more)

Subjects/Keywords: queue

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APA (6^th Edition):

Ozan, M. (2013). Queing theory of software . (Thesis). University of Debrecen. Retrieved from http://hdl.handle.net/2437/156190

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ozan, Mine. “Queing theory of software .” 2013. Thesis, University of Debrecen. Accessed April 18, 2021. http://hdl.handle.net/2437/156190.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ozan, Mine. “Queing theory of software .” 2013. Web. 18 Apr 2021.

Vancouver:

Ozan M. Queing theory of software . [Internet] [Thesis]. University of Debrecen; 2013. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/2437/156190.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ozan M. Queing theory of software . [Thesis]. University of Debrecen; 2013. Available from: http://hdl.handle.net/2437/156190

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

3. Meulenberg, M.J.A. (author). A possible new adaptive control approach for ramp metering.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:d959102a-780b-42f0-b516-e5f96a3b8229

►

Due to increasing congestion there is a need for improved traffic control measures. During the Field Operational Test Integrated Management Amsterdam (Praktijkproef Amsterdam (PPA)) several… (more)

Subjects/Keywords: parameter estimation; ramp metering; adaptive control; parameter tuning

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APA (6^th Edition):

Meulenberg, M. J. A. (. (2016). A possible new adaptive control approach for ramp metering. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:d959102a-780b-42f0-b516-e5f96a3b8229

Chicago Manual of Style (16^th Edition):

Meulenberg, M J A (author). “A possible new adaptive control approach for ramp metering.” 2016. Masters Thesis, Delft University of Technology. Accessed April 18, 2021. http://resolver.tudelft.nl/uuid:d959102a-780b-42f0-b516-e5f96a3b8229.

MLA Handbook (7^th Edition):

Meulenberg, M J A (author). “A possible new adaptive control approach for ramp metering.” 2016. Web. 18 Apr 2021.

Vancouver:

Meulenberg MJA(. A possible new adaptive control approach for ramp metering. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Apr 18]. Available from: http://resolver.tudelft.nl/uuid:d959102a-780b-42f0-b516-e5f96a3b8229.

Council of Science Editors:

Meulenberg MJA(. A possible new adaptive control approach for ramp metering. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:d959102a-780b-42f0-b516-e5f96a3b8229

4. Joly, Emilien. Estimation robuste pour des distributions à queue lourde : Robust estimation of heavy-tailed distributions.

Degree: Docteur es, Mathématiques appliquées, 2015, Université Paris-Saclay (ComUE)

URL: http://www.theses.fr/2015SACLS216

►

Nous nous intéressons à estimer la moyenne d'une variable aléatoire de loi à queue lourde. Nous adoptons une approche plus robuste que la moyenne empirique… (more)

▼

Nous nous intéressons à estimer la moyenne d'une variable aléatoire de loi à queue lourde. Nous adoptons une approche plus robuste que la moyenne empirique classique communément utilisée. L'objectif est de développer des inégalités de concentration de type sous-gaussien sur l'erreur d'estimation. En d'autres termes, nous cherchons à garantir une forte concentration sous une hypothèse plus faible que la bornitude : une variance finie. Deux estimateurs de la moyenne pour une loi à support réel sont invoqués et leurs résultats de concentration sont rappelés. Plusieurs adaptations en dimension supérieure sont envisagées. L'utilisation appropriée de ces estimateurs nous permet d'introduire une nouvelle technique de minimisation du risque empirique pour des variables aléatoires à queue lourde. Quelques applications de cette technique sont développées. Nous appuyons ces résultats sur des simulations sur des jeux de données simulées. Dans un troisième temps, nous étudions un problème d'estimation multivarié dans le cadre des U-statistiques où les estimateurs précédents offrent, là aussi, une généralisation naturelle d'estimateurs présents dans la littérature.

In this thesis, we are interested in estimating the mean of heavy-tailed random variables. We focus on a robust estimation of the mean approach as an alternative to the classical empirical mean estimation. The goal is to develop sub-Gaussian concentration inequalities for the estimating error. In other words, we seek strong concentration results usually obtained for bounded random variables, in the context where the bounded condition is replaced by a finite variance condition. Two existing estimators of the mean of a real-valued random variable are invoked and their concentration results are recalled. Several new higher dimension adaptations are discussed. Using those estimators, we introduce a new version of empirical risk minimization for heavy-tailed random variables. Some applications are developed. These results are illustrated by simulations on artificial data samples. Lastly, we study the multivariate case in the U-statistics context. A natural generalization of existing estimators is offered, once again, by previous estimators.

Advisors/Committee Members: Stoltz, Gilles (thesis director), Lugosi, Gábor (thesis director).

Subjects/Keywords: Estimation robuste; Queue lourde; Minimisation de risque; Estimation multivariée; Robust estimation; Heavy tails; Risk minimization; Multivariate estimation

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APA (6^th Edition):

Joly, E. (2015). Estimation robuste pour des distributions à queue lourde : Robust estimation of heavy-tailed distributions. (Doctoral Dissertation). Université Paris-Saclay (ComUE). Retrieved from http://www.theses.fr/2015SACLS216

Chicago Manual of Style (16^th Edition):

Joly, Emilien. “Estimation robuste pour des distributions à queue lourde : Robust estimation of heavy-tailed distributions.” 2015. Doctoral Dissertation, Université Paris-Saclay (ComUE). Accessed April 18, 2021. http://www.theses.fr/2015SACLS216.

MLA Handbook (7^th Edition):

Joly, Emilien. “Estimation robuste pour des distributions à queue lourde : Robust estimation of heavy-tailed distributions.” 2015. Web. 18 Apr 2021.

Vancouver:

Joly E. Estimation robuste pour des distributions à queue lourde : Robust estimation of heavy-tailed distributions. [Internet] [Doctoral dissertation]. Université Paris-Saclay (ComUE); 2015. [cited 2021 Apr 18]. Available from: http://www.theses.fr/2015SACLS216.

Council of Science Editors:

Joly E. Estimation robuste pour des distributions à queue lourde : Robust estimation of heavy-tailed distributions. [Doctoral Dissertation]. Université Paris-Saclay (ComUE); 2015. Available from: http://www.theses.fr/2015SACLS216

University of California – Berkeley

5. Kim, Kwangho. Queue Interactions on an Urban Freeway and Their Influence on Discharge Flow.

Degree: Civil and Environmental Engineering, 2011, University of California – Berkeley

URL: http://www.escholarship.org/uc/item/98p2m6d8

► This thesis unveils a reason for the time-varying patterns in discharge flow that are commonly observed at freeway bottlenecks. Observations reveal that four well-known effects… (more)

Subjects/Keywords: Engineering; Freeway bottleneck capacity; Freeway on-ramp metering; Freeway traffic flow

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APA (6^th Edition):

Kim, K. (2011). Queue Interactions on an Urban Freeway and Their Influence on Discharge Flow. (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/98p2m6d8

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kim, Kwangho. “Queue Interactions on an Urban Freeway and Their Influence on Discharge Flow.” 2011. Thesis, University of California – Berkeley. Accessed April 18, 2021. http://www.escholarship.org/uc/item/98p2m6d8.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kim, Kwangho. “Queue Interactions on an Urban Freeway and Their Influence on Discharge Flow.” 2011. Web. 18 Apr 2021.

Vancouver:

Kim K. Queue Interactions on an Urban Freeway and Their Influence on Discharge Flow. [Internet] [Thesis]. University of California – Berkeley; 2011. [cited 2021 Apr 18]. Available from: http://www.escholarship.org/uc/item/98p2m6d8.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kim K. Queue Interactions on an Urban Freeway and Their Influence on Discharge Flow. [Thesis]. University of California – Berkeley; 2011. Available from: http://www.escholarship.org/uc/item/98p2m6d8

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

6. Hamers, Paco (author). Automated truck platoon model development and effect study of the lane change location on different motorway road sections.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:5c33c234-9ad0-4523-bec3-8496f02eee42

►

Truck platooning is seen as a method to reduce truck emissions and labor hours in the transport industry. The effect that truck platooning will have… (more)

Subjects/Keywords: Truck platoon; micro-simulation; on-ramp; road usage; lane change model

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APA (6^th Edition):

Hamers, P. (. (2018). Automated truck platoon model development and effect study of the lane change location on different motorway road sections. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:5c33c234-9ad0-4523-bec3-8496f02eee42

Chicago Manual of Style (16^th Edition):

Hamers, Paco (author). “Automated truck platoon model development and effect study of the lane change location on different motorway road sections.” 2018. Masters Thesis, Delft University of Technology. Accessed April 18, 2021. http://resolver.tudelft.nl/uuid:5c33c234-9ad0-4523-bec3-8496f02eee42.

MLA Handbook (7^th Edition):

Hamers, Paco (author). “Automated truck platoon model development and effect study of the lane change location on different motorway road sections.” 2018. Web. 18 Apr 2021.

Vancouver:

Hamers P(. Automated truck platoon model development and effect study of the lane change location on different motorway road sections. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Apr 18]. Available from: http://resolver.tudelft.nl/uuid:5c33c234-9ad0-4523-bec3-8496f02eee42.

Council of Science Editors:

Hamers P(. Automated truck platoon model development and effect study of the lane change location on different motorway road sections. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:5c33c234-9ad0-4523-bec3-8496f02eee42

University of California – Berkeley

7. Su, Dongyan. Modeling, Estimation and Control of Traffic.

Degree: Mechanical Engineering, 2014, University of California – Berkeley

URL: http://www.escholarship.org/uc/item/9570v0wj

► This dissertation studies a series of freeway and arterial traffic modeling, estimation and control methodologies. First, it investigates the Link-Node Cell Transmission Model's (LN-CTM's) ability… (more)

▼ This dissertation studies a series of freeway and arterial traffic modeling, estimation and control methodologies. First, it investigates the Link-Node Cell Transmission Model's (LN-CTM's) ability to model arterial traffic. The LN-CTM is a modification of the cell transmission model developed by Daganzo. The investigation utilizes traffic data collected on an arterial segment in Los Angeles, California, and a link-node cell transmission model, with some adaptations to the arterial traffic, is constructed for the studied location. The simulated flow and the simulation travel time were compared with field measurements to evaluate the modeling accuracy.Second, an algorithm for estimating turning proportions is proposed in this dissertation. The knowledge about turning proportions at street intersections is a frequent input for traffic models, but it is often difficult to measure directly. Compared with previous estimation methods used to solve this problem, the proposed method can be used with only half the detectors employed in the conventional complete detector configuration. The proposed method formulates the estimation problem as a constrained least squares problem, and a recursive solving procedure is given. A simulation study was carried out to demonstrate the accuracy and efficiency of the proposed algorithm.In addition to addressing arterial traffic modeling and estimation problems, this dissertation also studies a freeway traffic control strategy and a freeway and arterial coordinated control strategy. It presents a coordinated control strategy of variable speed limits (VSL) and ramp metering to address freeway congestion caused by weaving effects. In this strategy, variable speed limits are designed to maximize the bottleneck flow, and ramp metering is designed to minimize travel time in a model predictive control frame work. A microscopic simulation based on the I-80 at Emeryville, California was built to evaluate the strategy, and the results showed that the traffic performance was significantly improved .Following the freeway control study, this dissertation discusses the coordinated control of freeways and arterials. In current practice, traffic controls on freeways and on arterials are independent. In order to coordinate these two systems for better performance, a control strategy covering the freeway ramp metering and the signal control at the adjacent intersection is developed. This control strategy uses upstream ALINEA, which is a well-known control algorithm, for ramp metering to locally maximize freeway throughput. For the intersection signal control, the proposed control strategy distributes green splits by taking into account both the available on-ramp space and the demands of all intersection movements. A microscopic simulation of traffic in an arterial intersection with flow discharge to a freeway on-ramp, which is calibrated using the data collected at San Jose, California, is created to evaluate the performance of the proposed control strategy. The results showed that the proposed strategy can…

Subjects/Keywords: Mechanical engineering; CACC; intersection signal control; LN-CTM; ramp metering; turning proportion estimation; VSL

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Su, D. (2014). Modeling, Estimation and Control of Traffic. (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/9570v0wj

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Su, Dongyan. “Modeling, Estimation and Control of Traffic.” 2014. Thesis, University of California – Berkeley. Accessed April 18, 2021. http://www.escholarship.org/uc/item/9570v0wj.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Su, Dongyan. “Modeling, Estimation and Control of Traffic.” 2014. Web. 18 Apr 2021.

Vancouver:

Su D. Modeling, Estimation and Control of Traffic. [Internet] [Thesis]. University of California – Berkeley; 2014. [cited 2021 Apr 18]. Available from: http://www.escholarship.org/uc/item/9570v0wj.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Su D. Modeling, Estimation and Control of Traffic. [Thesis]. University of California – Berkeley; 2014. Available from: http://www.escholarship.org/uc/item/9570v0wj

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

8. Venkatesh Koundinya, Shashank. Human Motion Analysis based on Human Pose Estimation .

Degree: Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap, 2020, Chalmers University of Technology

URL: http://hdl.handle.net/20.500.12380/301839

► In today’s scenario, the means of performing ergonomic assessment are mostly limited to obtaining the required information through manual observation. While this is good for… (more)

Subjects/Keywords: Real-time, Pose estimation, Motion tracking, Ergonomic assessment, AviX automation; VR usage, REBA, RAMP

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APA (6^th Edition):

Venkatesh Koundinya, S. (2020). Human Motion Analysis based on Human Pose Estimation . (Thesis). Chalmers University of Technology. Retrieved from http://hdl.handle.net/20.500.12380/301839

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Venkatesh Koundinya, Shashank. “Human Motion Analysis based on Human Pose Estimation .” 2020. Thesis, Chalmers University of Technology. Accessed April 18, 2021. http://hdl.handle.net/20.500.12380/301839.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Venkatesh Koundinya, Shashank. “Human Motion Analysis based on Human Pose Estimation .” 2020. Web. 18 Apr 2021.

Vancouver:

Venkatesh Koundinya S. Human Motion Analysis based on Human Pose Estimation . [Internet] [Thesis]. Chalmers University of Technology; 2020. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/20.500.12380/301839.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Venkatesh Koundinya S. Human Motion Analysis based on Human Pose Estimation . [Thesis]. Chalmers University of Technology; 2020. Available from: http://hdl.handle.net/20.500.12380/301839

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Tech

9. Kang, Byung O. New and Improved Methods to Characterize, Classify, and Estimate Daily Sky Conditions for Solar Energy Applications.

Degree: PhD, Electrical Engineering, 2014, Virginia Tech

URL: http://hdl.handle.net/10919/56966

► Firstly, this dissertation proposes a new characterization and classification method for daily sky conditions by using the daily sky clearness index (KD) and the daily… (more)

▼ Firstly, this dissertation proposes a new characterization and classification method for daily sky conditions by using the daily sky clearness index (KD) and the daily probability of persistence (POP-KD) that can be derived from ground-based irradiance measurement data. Quality of daily solar irradiance is characterized by a newly proposed parameter, POP-KD. This characterized daily quality is varying and uncertain at the middle level of the quantity, but high and more certain at very high and low quantity levels. In addition, the proposed characterization method shows interesting results for KD and POP-KD: a statistical consistency for multiple years and similarity for their seasonal trends. The classification results also indicate an existence of dominant classes, and transitions between the dominant classes are significant for all locations. This dissertation also generates annual synthetic sequences of KD and POP-KD using a Markov approach. The generated sequences show statistical similarities with observed sequences. Secondly, this dissertation proposes methodologies to estimate day-ahead solar irradiance using the National Weather Service (NWS) sky cover forecast. For model development, this paper splits up a direct estimation process from the sky cover forecast to solar irradiance into two stages: forecast verification and cloud-to-irradiance conversion. Uncertainty for each stage and for the overall estimation process is quantified. NWS forecast uncertainty (about 20%) is identified as the main source of uncertainty for the overall process. In addition, verification of the sky cover forecast shows approximately 20% overestimated bias at days with a high irradiance level. Thus, the NWS sky cover forecast needs to be adjusted based on the type of day. This dissertation also proposes a conversion equation relating daily quantity of cloud information and daily quantity of solar irradiance. The proposed conversion equation achieves accuracy with simplicity. Five day-ahead solar irradiance quantity estimation methods are proposed in this dissertation. The proposed methods incorporate different schemes for dealing with the bias discovered in the cloud forecast. The observed data are regularly found within the 95% confidence intervals of the estimated values. Estimation results demonstrate the effectiveness of the conditional adjustment schemes at different irradiance levels. Lastly, this dissertation proposes a methodology to estimate day-ahead solar irradiance using fluctuation information of the NWS sky cover forecast. POP-KD was used as a parameter for the quality of daily solar irradiance. POP-KD efficiently represents the quality of daily solar irradiance. In addition, POP-KD indicates the probability that solar irradiance variability is within the ramp rates of common generators in power systems at a certain photovoltaic penetration level. This dissertation also proposes a new equation for the conversion from cloud fluctuation information to daily quality of surface solar irradiance. The proposed… Advisors/Committee Members: Tam, Kwa Sur (committeechair), Deng, Xinwei (committee member), Centeno, Virgilio A. (committee member), Kim, Inyoung (committee member), Bailey, Scott M. (committee member).

Subjects/Keywords: Sky conditions; Synthetic generation; Solar irradiance estimation; NWS sky cover; Solar irradiance quality; Ramp rate

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APA (6^th Edition):

Kang, B. O. (2014). New and Improved Methods to Characterize, Classify, and Estimate Daily Sky Conditions for Solar Energy Applications. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/56966

Chicago Manual of Style (16^th Edition):

Kang, Byung O. “New and Improved Methods to Characterize, Classify, and Estimate Daily Sky Conditions for Solar Energy Applications.” 2014. Doctoral Dissertation, Virginia Tech. Accessed April 18, 2021. http://hdl.handle.net/10919/56966.

MLA Handbook (7^th Edition):

Kang, Byung O. “New and Improved Methods to Characterize, Classify, and Estimate Daily Sky Conditions for Solar Energy Applications.” 2014. Web. 18 Apr 2021.

Vancouver:

Kang BO. New and Improved Methods to Characterize, Classify, and Estimate Daily Sky Conditions for Solar Energy Applications. [Internet] [Doctoral dissertation]. Virginia Tech; 2014. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/10919/56966.

Council of Science Editors:

Kang BO. New and Improved Methods to Characterize, Classify, and Estimate Daily Sky Conditions for Solar Energy Applications. [Doctoral Dissertation]. Virginia Tech; 2014. Available from: http://hdl.handle.net/10919/56966

10. Kan, Xingan David. Increasing Freeway Capacity by Efficiently Timing its Nearby Arterial Traffic Signals.

Degree: Civil and Environmental Engineering, 2017, University of California – Berkeley

URL: http://www.escholarship.org/uc/item/8vb9g0dn

► On-ramp metering at freeway bottlenecks is an effective method of reducing a freeway system’s delay because empirical studies have previously shown that metering can prevent… (more)

▼ On-ramp metering at freeway bottlenecks is an effective method of reducing a freeway system’s delay because empirical studies have previously shown that metering can prevent capacity drop, or reduction of outflow as a result of queue formation. However, arterial traffic signals that facilitate access to freeway on-ramps operate independent of the traffic conditions on the freeway on-ramp. Consequently, the traffic signals employ long signal cycle lengths and thus long green durations to maximize capacity at the arterial signalized intersections, which result in long platoons of freeway-bound traffic advancing toward the on-ramps. This often causes queue spillback on the freeway on-ramps and the surface street network. Queue override, a function that terminates or significantly relaxes the on-ramp metering rate whenever a sensor placed at the entrance of the on-ramp detects a potential queue spillover of the on-ramp vehicles on the adjacent surface streets, has become a widely accepted method of resolving queue spillback on the freeway on-ramps and nearby surface streets. Unfortunately, queue override releases the queue into the freeway and negates the benefit of ramp metering during the peak hours with recurrent freeway congestion. Video data collected downstream of freeway/on-ramp merge in San Jose, California show that the bottleneck discharge flow diminishes when queue override is activated for a sustained period of time. Observations over a two-week period suggest that queue override reduces the bottleneck discharge flow by an average of 10%.Recently, there has been significant interest in integrated corridor management (ICM) of facilities comprised of freeways and adjacent arterial streets. Significant benefits can be realized by preventing queue override and effectively storing the queued vehicles on the nearby arterial surface streets if the arterial traffic signals can account for traffic conditions on freeway on-ramps and avoid sending long platoons to the freeway on-ramp. A signal control strategy was developed and evaluated in this study. The algorithm takes available on-ramp storage and freeway ramp metering rate into account and dynamically reduces the cycle length and adjusts the green durations to prevent on-ramp queue spillback and mitigate unnecessary delay in the conflicting arterial directions. The proposed algorithm was tested through simulation and the results show that the proposed strategy reduces the freeway and system-wide delay even under fluctuations in traffic demand, at a modest penalty on the on-ramp bound traffic.

Subjects/Keywords: Transportation; Arterial Traffic Signal; Capacity Drop; Queue Override; Ramp Metering

…construction of long on-ramps. This leads to on-ramp oversaturation and queue spillback prior to the… …that is intended to prevent the on-ramp queue from obstructing traffic along the adjacent… …ramp detects a potential queue spillover of the 1 on-ramp vehicles on the adjacent surface… …streets. This clears the on-ramp queue by temporarily turning off ramp metering or increasing… …over a short period of time, in order to prevent on-ramp oversaturation and subsequent queue…

10 more images…

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APA (6^th Edition):

Kan, X. D. (2017). Increasing Freeway Capacity by Efficiently Timing its Nearby Arterial Traffic Signals. (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/8vb9g0dn

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kan, Xingan David. “Increasing Freeway Capacity by Efficiently Timing its Nearby Arterial Traffic Signals.” 2017. Thesis, University of California – Berkeley. Accessed April 18, 2021. http://www.escholarship.org/uc/item/8vb9g0dn.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kan, Xingan David. “Increasing Freeway Capacity by Efficiently Timing its Nearby Arterial Traffic Signals.” 2017. Web. 18 Apr 2021.

Vancouver:

Kan XD. Increasing Freeway Capacity by Efficiently Timing its Nearby Arterial Traffic Signals. [Internet] [Thesis]. University of California – Berkeley; 2017. [cited 2021 Apr 18]. Available from: http://www.escholarship.org/uc/item/8vb9g0dn.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kan XD. Increasing Freeway Capacity by Efficiently Timing its Nearby Arterial Traffic Signals. [Thesis]. University of California – Berkeley; 2017. Available from: http://www.escholarship.org/uc/item/8vb9g0dn

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

11. Fransson, Emelie. Driving behavior modeling and evaluation of merging control strategies - A microscopic simulation study on Sirat Expressway.

Degree: The Institute of Technology, 2018, Linköping UniversityLinköping University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-146271

► Bangkok is a city where the congestion levels have been a major problem for many years. In 2017, Bangkok was rated the most congested… (more)

▼ Bangkok is a city where the congestion levels have been a major problem for many years. In 2017, Bangkok was rated the most congested city in Asia, and the second most congested in the world. According to The Expressway Authority of Thailand (EXAT), on-ramp merging is one of the most critical problem that causes congestion on the urban expressways. EXAT have evaluated several merging control strategies through microscopic traffic simulation to find suitable strategies for implementation in real life. However, their simulation studies were all based on the assumption that all motorists strictly follow the traffic rules. This is not the actual case in Bangkok, where the drivers ignore both solid lines and striped areas, as well as utilize the shoulder lane on a regular basis. The aim of this thesis is to investigate if it is possible to include this complex driving behavior in existing microscopic simulation models. A second objective is to identify merging control strategies that can reduce the occurrence and the effects of this driving behavior in order to increase the throughput at an on-ramp area on Sirat Expressway. A model was built in VISSIM and calibrated based on data collected from video recordings. In the study, parameters that are significant for the driving behavior modeling, as well as the difficulties that arise from performing a realistic calibration of the model using video observations and model-specific constraints, are identified. From the video recordings it was discovered that the main problem causing the congestion was a result of the mainline traffic who traversed to the on-ramp. Two merging control strategies were suggested to address this problem: the installment of a center barrier, and successive merging areas. The results confirmed that both actions can improve the traffic situation in terms of reducing the individual travel time. Installing a center barrier was the most efficient option and reduced the travel time by 16.58 % on the mainline and 63.24 % at the on-ramp.

Subjects/Keywords: microscopic; simulation; VISSIM; driving behavior; on-ramp; merging; control strategy; expressway; Bangkok; Communication Systems; Kommunikationssystem

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APA (6^th Edition):

Fransson, E. (2018). Driving behavior modeling and evaluation of merging control strategies - A microscopic simulation study on Sirat Expressway. (Thesis). Linköping UniversityLinköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-146271

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Fransson, Emelie. “Driving behavior modeling and evaluation of merging control strategies - A microscopic simulation study on Sirat Expressway.” 2018. Thesis, Linköping UniversityLinköping University. Accessed April 18, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-146271.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Fransson, Emelie. “Driving behavior modeling and evaluation of merging control strategies - A microscopic simulation study on Sirat Expressway.” 2018. Web. 18 Apr 2021.

Vancouver:

Fransson E. Driving behavior modeling and evaluation of merging control strategies - A microscopic simulation study on Sirat Expressway. [Internet] [Thesis]. Linköping UniversityLinköping University; 2018. [cited 2021 Apr 18]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-146271.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Fransson E. Driving behavior modeling and evaluation of merging control strategies - A microscopic simulation study on Sirat Expressway. [Thesis]. Linköping UniversityLinköping University; 2018. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-146271

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Kansas

12. Udaipurwala, Mazharali Toqueer. Evaluation of the Intersection Confirmation Light With Targeted Enforcement to Reduce Red Light Running Violations at Freeway Ramp Intersections.

Degree: MS, Civil, Environmental & Architectural Engineering, 2015, University of Kansas

URL: http://hdl.handle.net/1808/19402

► ABSTRACT Red Light Running (RLR) at signalized intersections continues to be a safety concern for many communities in the United States. The Insurance Institute for… (more)

▼ ABSTRACT Red Light Running (RLR) at signalized intersections continues to be a safety concern for many communities in the United States. The Insurance Institute for Highway Safety (IIHS) reported a total of 683 fatalities and 133,000 injuries in 2012 due to crashes involving RLR. There are many strategies to mitigate RLR violations that can be classified as engineering, enforcement, or education techniques. Previous studies have reported positive impacts of these strategies in reducing RLR. Intersection confirmation lights with targeted enforcement are a low-cost measure to reduce RLR in communities where automated enforcement is not practical or feasible. Some studies have shown the effectiveness of confirmation lights in reducing RLR at four-leg signalized intersections. This research study focuses on evaluating confirmation lights to enhance enforcement at on-ramp signalized intersections. Operations of on-ramp intersections are different than four-leg intersections, as the drivers may be more likely to run the red light and join the freeway. Police officers find these intersections difficult to enforce from the ramp as they cannot see the traffic signals. Adding confirmation lights can change that. Confirmation lights were deployed at two on-ramp intersections in Overland Park, Kansas. Traffic were observed at the treatment sites, and at five other control intersections. Traffic data were recorded before deployment, one month after, and three months after installation of the confirmation lights. A total of seven intersections were recorded for 24 hours on Tuesdays, Wednesdays, and Thursdays for a total of 1512 hours of traffic video. A z-test of proportions was used to determine if the changes in RLR violation rates from the before period to the after periods were statistically significant at the 0.05 level of significance. Violation time into red (how long it took a driver to run a red light after the red signal indication) was used as a secondary performance measure to evaluate the confirmation lights. A chi-square test of independence was used to analyze the violation times into red at the 0.05 level of significance. Analysis showed a 60.4 percent reduction in the RLR violation rate at the treatment sites and a 31.8 percent reduction at the control sites one month after installation of the confirmation lights. The three months after study indicated a 56.9 percent decrease in violation rates at the treatment sites and 60.16 percent reduction at the control sites. At the 0.05 level of significance, the one month and three month reductions at the treatment sites were statistically significant whereas only the three months reduction were statistically significant at the control sites. A chi- square test was conducted for time into red which was statistically significant for the one month and three month violations for both the treatment and the control sites. This indicates a relationship between confirmation lights with targeted enforcement and the driver behavior for time into red. It should be noted that, the… Advisors/Committee Members: Schrock, Dr. Steven D (advisor), Mulinazzi, Dr. Thomas E (cmtemember), Fitzsimmons, Dr. Eric J (cmtemember).

Subjects/Keywords: Civil engineering; Confirmation Lights; On-ramp intersections; Red light running; Targeted Enforcement

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APA (6^th Edition):

Udaipurwala, M. T. (2015). Evaluation of the Intersection Confirmation Light With Targeted Enforcement to Reduce Red Light Running Violations at Freeway Ramp Intersections. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/19402

Chicago Manual of Style (16^th Edition):

Udaipurwala, Mazharali Toqueer. “Evaluation of the Intersection Confirmation Light With Targeted Enforcement to Reduce Red Light Running Violations at Freeway Ramp Intersections.” 2015. Masters Thesis, University of Kansas. Accessed April 18, 2021. http://hdl.handle.net/1808/19402.

MLA Handbook (7^th Edition):

Udaipurwala, Mazharali Toqueer. “Evaluation of the Intersection Confirmation Light With Targeted Enforcement to Reduce Red Light Running Violations at Freeway Ramp Intersections.” 2015. Web. 18 Apr 2021.

Vancouver:

Udaipurwala MT. Evaluation of the Intersection Confirmation Light With Targeted Enforcement to Reduce Red Light Running Violations at Freeway Ramp Intersections. [Internet] [Masters thesis]. University of Kansas; 2015. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/1808/19402.

Council of Science Editors:

Udaipurwala MT. Evaluation of the Intersection Confirmation Light With Targeted Enforcement to Reduce Red Light Running Violations at Freeway Ramp Intersections. [Masters Thesis]. University of Kansas; 2015. Available from: http://hdl.handle.net/1808/19402

Massey University

13. Yu, Xuefeng. Dynamic programming based coordinated ramp metering algorithms.

Degree: PhD, Mechatronics, 2014, Massey University

URL: http://hdl.handle.net/10179/5927

► Motorway congestion can be classified into two types, recurrent congestion and non-recurrent congestion. Recurrent congestion happens during peak hours. Non-recurrent congestion occurs due to car… (more)

▼ Motorway congestion can be classified into two types, recurrent congestion and non-recurrent congestion. Recurrent congestion happens during peak hours. Non-recurrent congestion occurs due to car accidents, weather conditions or public events. Negative impacts of traffic congestion include wasted fuel, pollution, travel delay and spillover effects caused by slow traffic. Ramp metering, as an only way to regulate traffic amount accessing to the motorway, is considered as the most cost-effective way to prevent the recurrent congestion. Coordinated ramp metering was developed to control a number of on-ramps simultaneously to improve traffic conditions on busy motorways. The existing coordinated ramp metering algorithms were normally established on macroscopic traffic flow models based on Payne’s wok, the performances of which were measured by the employed macroscopic model themselves, and the released metering rates of which tended to be continuous. Implementations in microscopic traffic simulators were few. This thesis presents DP (Dynamic Programming) based online control approaches for the optimal coordination of ramp metering and evaluates its performances in both macroscopic and microscopic traffic simulation environment. DP decision networks were proposed, where a traffic system can be modeled as a number of discrete traffic states and separated by time stages, and the control problem of coordinated ramp metering was treated as the minimization problem to search the optimal trajectory of discrete decision variables (ramp metering rates) that minimized a cost criterion in terms of TTS (total time spent) along the time horizon. Experiments conducted in the macroscopic simulation environment demonstrated the full potential of proposed algorithms with precise queue constrains in an ideal deterministic environment, and experiments conducted in the microscopic simulation environment indicated the performances of the proposed algorithms in a stochastic environment and revealed the feasibility in the real world. The implementation of DP ramp metering was proposed under the framework of receding horizon control. A 6.7km stretch of motorway in Auckland, New Zealand, was chosen as a study location and constructed by a microscopic simulator as a simulation scenario and by a macroscopic traffic model as a prediction model. The simulation results indicated that the proposed algorithms were able to eliminate motorway queues under high traffic demands and manage queue lengths at metered on-ramps when queue constrains were not overstrict. The simulation results also revealed that 9 discrete metering rates for each ramp meter were adequate to prevent motorway queues. Such feature not only proved that the optimal trajectory converged very fast in the proposed DP decision networks, but also made on-line control system possible due to less computational load.

Subjects/Keywords: Traffic congestion; Motorway congestion; Motorway ramps; Ramp metering; Traffic flow; On-ramps; Traffic simulation

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APA (6^th Edition):

Yu, X. (2014). Dynamic programming based coordinated ramp metering algorithms. (Doctoral Dissertation). Massey University. Retrieved from http://hdl.handle.net/10179/5927

Chicago Manual of Style (16^th Edition):

Yu, Xuefeng. “Dynamic programming based coordinated ramp metering algorithms.” 2014. Doctoral Dissertation, Massey University. Accessed April 18, 2021. http://hdl.handle.net/10179/5927.

MLA Handbook (7^th Edition):

Yu, Xuefeng. “Dynamic programming based coordinated ramp metering algorithms.” 2014. Web. 18 Apr 2021.

Vancouver:

Yu X. Dynamic programming based coordinated ramp metering algorithms. [Internet] [Doctoral dissertation]. Massey University; 2014. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/10179/5927.

Council of Science Editors:

Yu X. Dynamic programming based coordinated ramp metering algorithms. [Doctoral Dissertation]. Massey University; 2014. Available from: http://hdl.handle.net/10179/5927

14. Khazraeian, Samaneh. Methods for Utilizing Connected Vehicle Data in Support of Traffic Bottleneck Management.

Degree: PhD, Civil Engineering, 2017, Florida International University

URL: https://digitalcommons.fiu.edu/etd/3496 ; 10.25148/etd.FIDC004061 ; FIDC004061

► The decision to select the best Intelligent Transportation System (ITS) technologies from available options has always been a challenging task. The availability of connected… (more)

▼ The decision to select the best Intelligent Transportation System (ITS) technologies from available options has always been a challenging task. The availability of connected vehicle/automated vehicle (CV/AV) technologies in the near future is expected to add to the complexity of the ITS investment decision-making process. The goal of this research is to develop a multi-criteria decision-making analysis (MCDA) framework to support traffic agencies’ decision-making process with consideration of CV/AV technologies. The decision to select between technology alternatives is based on identified performance measures and criteria, and constraints associated with each technology. Methods inspired by the literature were developed for incident/bottleneck detection and back-of-queue (BOQ) estimation and warning based on connected vehicle (CV) technologies. The mobility benefits of incident/bottleneck detection with different technologies were assessed using microscopic simulation. The performance of technology alternatives was assessed using simulated CV and traffic detector data in a microscopic simulation environment to be used in the proposed MCDA method for the purpose of alternative selection. In addition to assessing performance measures, there are a number of constraints and risks that need to be assessed in the alternative selection process. Traditional alternative analyses based on deterministic return on investment analysis are unable to capture the risks and uncertainties associated with the investment problem. This research utilizes a combination of a stochastic return on investment and a multi-criteria decision analysis method referred to as the Analytical Hierarchy Process (AHP) to select between ITS deployment alternatives considering emerging technologies. The approach is applied to an ITS investment case study to support freeway bottleneck management. The results of this dissertation indicate that utilizing CV data for freeway segments is significantly more cost-effective than using point detectors in detecting incidents and providing travel time estimates one year after CV technology becomes mandatory for all new vehicles and for corridors with moderate to heavy traffic. However, for corridors with light, there is a probability of CV deployment not being effective in the first few years due to low measurement reliability of travel times and high latency of incident detection, associated with smaller sample sizes of the collected data. Advisors/Committee Members: Dr. Mohammed Hadi, Dr. Albert Gan, Dr. L. David Shen, Dr. Xia Jin, Dr. Zhenmin Chen.

Subjects/Keywords: Connected Vehicle Technology; ITS Investment Support; AHP; Return on Investment; Bottleneck Management; Incident Detection; Queue Estimation and Warning; Transportation Engineering

…back-of-queue (BOQ) estimation and warning based on connected vehicle (CV)… …detection and queue estimation and warning based on connected vehicle data. The performance of the… …Back-of-queue Estimation ................................ 31 2.4 MULTI-CRITERIA DECISION… …81 4.3 QUEUE ESTIMATION AND WARNING RESULTS… …25 Figure 2-3 Comparison of The Posted And Actual Distance To The Back-of-Queue on I-94 in…

10 more images…

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APA (6^th Edition):

Khazraeian, S. (2017). Methods for Utilizing Connected Vehicle Data in Support of Traffic Bottleneck Management. (Doctoral Dissertation). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/3496 ; 10.25148/etd.FIDC004061 ; FIDC004061

Chicago Manual of Style (16^th Edition):

Khazraeian, Samaneh. “Methods for Utilizing Connected Vehicle Data in Support of Traffic Bottleneck Management.” 2017. Doctoral Dissertation, Florida International University. Accessed April 18, 2021. https://digitalcommons.fiu.edu/etd/3496 ; 10.25148/etd.FIDC004061 ; FIDC004061.

MLA Handbook (7^th Edition):

Khazraeian, Samaneh. “Methods for Utilizing Connected Vehicle Data in Support of Traffic Bottleneck Management.” 2017. Web. 18 Apr 2021.

Vancouver:

Khazraeian S. Methods for Utilizing Connected Vehicle Data in Support of Traffic Bottleneck Management. [Internet] [Doctoral dissertation]. Florida International University; 2017. [cited 2021 Apr 18]. Available from: https://digitalcommons.fiu.edu/etd/3496 ; 10.25148/etd.FIDC004061 ; FIDC004061.

Council of Science Editors:

Khazraeian S. Methods for Utilizing Connected Vehicle Data in Support of Traffic Bottleneck Management. [Doctoral Dissertation]. Florida International University; 2017. Available from: https://digitalcommons.fiu.edu/etd/3496 ; 10.25148/etd.FIDC004061 ; FIDC004061

Texas A&M University

15. Tiaprasert, Kamonthep. Queue Length Estimation and Platoon Recognition Using Connected Vehicle Technology for Adaptive Signal Control.

Degree: PhD, Civil Engineering, 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/156829

► This dissertation presents mathematical and analytical models for real-time queue length estimation and platoon recognition using the connected vehicle technology (CVT). Information on queue length… (more)

▼ This dissertation presents mathematical and analytical models for real-time queue length estimation and platoon recognition using the connected vehicle technology (CVT). Information on queue length and platoon is a crucial part of traffic signal control and is difficult to obtain accurately with traditional technologies such as loop detectors. The past studies are either limited to fixed-time signal control or lacked verification on the applicable range or evaluation of the performance of algorithms. The proposed algorithms focused on estimating the queue length for adaptive signal control and platoon characteristics for signal coordination and adaptive signal control. For queue length detection, an algorithm was developed to determine the estimated value between the last stopped vehicle and the first moving vehicle for different market penetration ratios. Discrete wavelet transform is applied to the estimated queue lengths to improve accuracy and consistency. The platoon recognition model is developed based on time headway so that the arrival times can be computed directly from the estimated platoon data. First, the detected platoon is identified by a modified critical time-headway. Then, platoon size and starting and ending times are estimated. Lastly, a filtering process for “qualified” detected platoon is proposed to optimize detectability. The results show that the proposed algorithms can estimate well in various traffic conditions and under both fixed-time and actuated signal control without relying on inputs that are hard to obtain in practice. Furthermore, an analytical model to estimate the platoon detection rate is proposed and shown to be close to the numerical results. Therefore, Traffic engineers can use the analytical model to estimate the required market penetration ratio for the application without field experiments or microscopic simulation. Accordingly, the proposed algorithms can be an important part of adaptive signal control focusing on real-time coordination. Advisors/Committee Members: Zhang, Yunlong (advisor), Wang, Xiubin Bruce (committee member), Quadrifoglio, Luca (committee member), Kianfar, Kiavash (committee member).

Subjects/Keywords: Queue Length Estimation; Wireless Vehicle-To-Vehicle Communications; Adaptive Signal Control; Discrete Wavelet Transform; Platoon Identification

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APA (6^th Edition):

Tiaprasert, K. (2016). Queue Length Estimation and Platoon Recognition Using Connected Vehicle Technology for Adaptive Signal Control. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/156829

Chicago Manual of Style (16^th Edition):

Tiaprasert, Kamonthep. “Queue Length Estimation and Platoon Recognition Using Connected Vehicle Technology for Adaptive Signal Control.” 2016. Doctoral Dissertation, Texas A&M University. Accessed April 18, 2021. http://hdl.handle.net/1969.1/156829.

MLA Handbook (7^th Edition):

Tiaprasert, Kamonthep. “Queue Length Estimation and Platoon Recognition Using Connected Vehicle Technology for Adaptive Signal Control.” 2016. Web. 18 Apr 2021.

Vancouver:

Tiaprasert K. Queue Length Estimation and Platoon Recognition Using Connected Vehicle Technology for Adaptive Signal Control. [Internet] [Doctoral dissertation]. Texas A&M University; 2016. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/1969.1/156829.

Council of Science Editors:

Tiaprasert K. Queue Length Estimation and Platoon Recognition Using Connected Vehicle Technology for Adaptive Signal Control. [Doctoral Dissertation]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/156829

Delft University of Technology

16. Terzi, O. (author). Liberating Access: Architecture as an open framework.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:f41234d6-701c-418a-859c-97650f92698e

►

The present MSc thesis is an architectural proposal for the redesign of building accessibility, aimed at creating adaptable architecture over time. Adaptability is understood as… (more)

Subjects/Keywords: open architecture; flexible; flexibility; support; infill; access; on demand; adaptable; adaptability; rules; fixations; over time; ramp; fixed; change; building lifetime

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APA (6^th Edition):

Terzi, O. (. (2017). Liberating Access: Architecture as an open framework. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:f41234d6-701c-418a-859c-97650f92698e

Chicago Manual of Style (16^th Edition):

Terzi, O (author). “Liberating Access: Architecture as an open framework.” 2017. Masters Thesis, Delft University of Technology. Accessed April 18, 2021. http://resolver.tudelft.nl/uuid:f41234d6-701c-418a-859c-97650f92698e.

MLA Handbook (7^th Edition):

Terzi, O (author). “Liberating Access: Architecture as an open framework.” 2017. Web. 18 Apr 2021.

Vancouver:

Terzi O(. Liberating Access: Architecture as an open framework. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Apr 18]. Available from: http://resolver.tudelft.nl/uuid:f41234d6-701c-418a-859c-97650f92698e.

Council of Science Editors:

Terzi O(. Liberating Access: Architecture as an open framework. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:f41234d6-701c-418a-859c-97650f92698e

University of Kansas

17. Gubbala, Phani Sai Satya Srinivas. Effect of On-Ramp Demand on Capacity at Merge Bottleneck Locations.

Degree: M.E., Civil, Environmental & Architectural Engineering, 2017, University of Kansas

URL: http://hdl.handle.net/1808/24145

► Past research acknowledged the impact of ramp vehicles on the occurrence of a breakdown event, but little has been done to quantify the effect of… (more)

▼ Past research acknowledged the impact of ramp vehicles on the occurrence of a breakdown event, but little has been done to quantify the effect of the ramp vehicles on the resulting bottleneck capacity. The objective of this research is to explore the relationship between ramp flow and capacity and to recommend capacity values for merge bottleneck locations. To explore the relationship between ramp flow and capacity, a capacity model has been developed using linear regression. The entire freeway network in Kansas City area was considered for the analysis. All locations which experienced “true breakdown”, breakdown because of merging operations and not due to downstream spillback, were selected for the analysis. Detector data at the six selected locations, were downloaded from KC Scout Portal from January 1, 2016 to June 30, 2016. Per lane and average speed, volume and occupancy data at 5-minute intervals were chosen for the analysis so as to detect breakdowns and find independent breakdown locations. Incident data and bad weather data were also collected for the same period and all the days with incidents and bad weather were removed from the analysis. For this research, free flow speed was defined as the average of flows when speeds were more than 50 miles per hour and the flows were less than 800 vehicles/hour. Breakdown was said to occur when speeds drop more than 25% of the free flow speed and the reduced speeds are maintained for at least 15 minutes, i.e., three 5-minute intervals (TRB, 2016). The breakdown capacities ranged from 3,900 to 8,500 vehicles per hour (veh/h) and when averaged across all the lanes, 1,150 to 2,200 vehicles per hour per lane (veh/h/ln). The upstream breakdown flows (demand) ranged from 3,400 to 8,400 veh/h and when averaged across all the lanes, 1,050-2,100 veh/h/ln. The ramp breakdown flows (ramp demand) ranged from 150 to 2,700 veh/h and when averaged across all the lanes, 150 to 1,500 veh/h/ln. Various variables such as freeway demand, ramp demand, free flow speed, number of lanes, ramp to freeway demand ratio, outer two-lane flow, shoulder lane flow, and remaining lane flow were considered for developing the model. Interactions between the variables were also considered. The final model was developed using 70% of the data, which were randomly selected, and the remaining 30% of the data was set aside for validation. A final model with an R2 value of 0.689 was developed. The high R2 value indicates that the developed model is a good predictor of capacity and this was also proven through the validation test for the developed model. The regression model was used to predict capacity values for different ramp demand and freeway demand. By observing the calculated capacity values it was concluded that the capacity was decreasing as the ramp demand, outer two lanes flows were increasing and the capacity per lane was decreasing as the number of lanes was decreasing, which is consistent with past literature (Lu & Elefeteriadou, 2013; Kondyli et al. 2016). Advisors/Committee Members: Kondyli, Alexandra (advisor), Mulinazzi, Thomas (cmtemember), Schrock, Steven (cmtemember).

Subjects/Keywords: Transportation; bottleneck; capacity at merge bottleneck locations; capacity model; merge segment capacity; on-ramp demand; regression model

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APA (6^th Edition):

Gubbala, P. S. S. S. (2017). Effect of On-Ramp Demand on Capacity at Merge Bottleneck Locations. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/24145

Chicago Manual of Style (16^th Edition):

Gubbala, Phani Sai Satya Srinivas. “Effect of On-Ramp Demand on Capacity at Merge Bottleneck Locations.” 2017. Masters Thesis, University of Kansas. Accessed April 18, 2021. http://hdl.handle.net/1808/24145.

MLA Handbook (7^th Edition):

Gubbala, Phani Sai Satya Srinivas. “Effect of On-Ramp Demand on Capacity at Merge Bottleneck Locations.” 2017. Web. 18 Apr 2021.

Vancouver:

Gubbala PSSS. Effect of On-Ramp Demand on Capacity at Merge Bottleneck Locations. [Internet] [Masters thesis]. University of Kansas; 2017. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/1808/24145.

Council of Science Editors:

Gubbala PSSS. Effect of On-Ramp Demand on Capacity at Merge Bottleneck Locations. [Masters Thesis]. University of Kansas; 2017. Available from: http://hdl.handle.net/1808/24145

Delft University of Technology

18. van Maarseveen, Sander (author). Impacts of Truck Platooning at Motorway On-ramps: Analysis of traffic performance and safety effects of different platooning strategies and platoon configurations using microscopic simulation.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:dd8ee414-bddc-435b-90fe-21480cbd9187

►

In this research, insight is gained into the impacts of truck platooning on traffic performance and safety at motorway on-ramps in mixed traffic using microscopic… (more)

Subjects/Keywords: truck platooning; motorway on-ramp; merging; traffic performance; traffic safety; microscopic simulation; platooning strategy; platoon configuration

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

van Maarseveen, S. (. (2017). Impacts of Truck Platooning at Motorway On-ramps: Analysis of traffic performance and safety effects of different platooning strategies and platoon configurations using microscopic simulation. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:dd8ee414-bddc-435b-90fe-21480cbd9187

Chicago Manual of Style (16^th Edition):

van Maarseveen, Sander (author). “Impacts of Truck Platooning at Motorway On-ramps: Analysis of traffic performance and safety effects of different platooning strategies and platoon configurations using microscopic simulation.” 2017. Masters Thesis, Delft University of Technology. Accessed April 18, 2021. http://resolver.tudelft.nl/uuid:dd8ee414-bddc-435b-90fe-21480cbd9187.

MLA Handbook (7^th Edition):

van Maarseveen, Sander (author). “Impacts of Truck Platooning at Motorway On-ramps: Analysis of traffic performance and safety effects of different platooning strategies and platoon configurations using microscopic simulation.” 2017. Web. 18 Apr 2021.

Vancouver:

van Maarseveen S(. Impacts of Truck Platooning at Motorway On-ramps: Analysis of traffic performance and safety effects of different platooning strategies and platoon configurations using microscopic simulation. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Apr 18]. Available from: http://resolver.tudelft.nl/uuid:dd8ee414-bddc-435b-90fe-21480cbd9187.

Council of Science Editors:

van Maarseveen S(. Impacts of Truck Platooning at Motorway On-ramps: Analysis of traffic performance and safety effects of different platooning strategies and platoon configurations using microscopic simulation. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:dd8ee414-bddc-435b-90fe-21480cbd9187

19. Gao, Hongyan. Delay Models at Signalized Intersections Considering Short Right-Turn Lanes and Right Turn on Red.

Degree: 2011, University of Nevada – Reno

URL: http://hdl.handle.net/11714/3819

► The most widely used procedures for estimating delay at signalized intersections are provided by the Highway Capacity Manual (HCM). Despite many revisions, the current HCM… (more)

▼ The most widely used procedures for estimating delay at signalized intersections are provided by the Highway Capacity Manual (HCM). Despite many revisions, the current HCM delay models lack consideration of short turn lanes and vehicles making a right turn on red (RTOR), both of which are commonly seen in real-life situations. Neglecting the delay caused by short-lane blockages and excluding RTOR traffic, the existing models can underestimate the delay for the signalized intersections. To eliminate these shortcomings of the current HCM, comprehensive delay models were developed by considering the chance of short-lane blockage and right turns proceeding during red. The proposed analytical models were constructed via two different approaches: probabilistic theories and queue accumulation polygons (QAP). They were capable of handling delay estimation given different inputs. The effectiveness and validity of the proposed models were verified by the microscopic simulation model, SimTraffic, which was calibrated based on intersection field data. The proposed models, developed with two different ideologies, showed their distinct advantages. By following the traditional HCM procedures, the probabilistic model only requires basic information as inputs, including traffic volume, saturation flow rate, signal timing plan, and short-lane length. It enhanced the HCM models by being able to handle delay estimation for short right-turn lane and RTOR. By incorporating the RTOR queuing and discharging information, the QAP model overcomes the shortcoming of HCM models where RTOR are directly removed before the capacity or delay analysis. It is better at modeling vehicular arrival and departure for both through and right-turn traffic under various signal control strategies and blockage scenarios. Using the probabilistic model, it was found that the length of the short right-turn lane strongly influences the intersection delay. Delay decreases as the length of the right-turn lane increases. RTOR can reduce the over-saturation, thereby reducing the approach delay substantially, especially when the length of the lane is insufficient to accommodate queuing vehicles. Based on the field data studied in this research, both QAP model and probabilistic model yield better estimates for the approach delay than the HCM model. The results also confirmed that the HCM tends to underestimate the approach delay by ignoring the short-lane blockage and delay contributed by RTOR traffic. Advisors/Committee Members: Tian, Zong Z. (advisor), Gibby, Reed (committee member), Pekcan, Gokhan (committee member), Shen, Yantao (committee member), Song, Shunfeng (committee member).

Subjects/Keywords: Delay; Queue Accumulation Polygon (QAP); Right Turn on Red (RTOR); Short Lane Blockage; Short Right-Turn Lane

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APA (6^th Edition):

Gao, H. (2011). Delay Models at Signalized Intersections Considering Short Right-Turn Lanes and Right Turn on Red. (Thesis). University of Nevada – Reno. Retrieved from http://hdl.handle.net/11714/3819

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gao, Hongyan. “Delay Models at Signalized Intersections Considering Short Right-Turn Lanes and Right Turn on Red.” 2011. Thesis, University of Nevada – Reno. Accessed April 18, 2021. http://hdl.handle.net/11714/3819.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gao, Hongyan. “Delay Models at Signalized Intersections Considering Short Right-Turn Lanes and Right Turn on Red.” 2011. Web. 18 Apr 2021.

Vancouver:

Gao H. Delay Models at Signalized Intersections Considering Short Right-Turn Lanes and Right Turn on Red. [Internet] [Thesis]. University of Nevada – Reno; 2011. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/11714/3819.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gao H. Delay Models at Signalized Intersections Considering Short Right-Turn Lanes and Right Turn on Red. [Thesis]. University of Nevada – Reno; 2011. Available from: http://hdl.handle.net/11714/3819

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

20. Majid, Hirsh. Contribution à l'estimation et à la commande des systèmes de transport intelligents : Contribution to the estimation and control of intelligent transport systems.

Degree: Docteur es, Génie Informatique et Automatique, 2014, Université d'Artois

URL: http://www.theses.fr/2014ARTO0203

►

Les travaux présentés dans ce mémoire de thèse s’inscrivent dans le cadre des Systèmes de TransportIntelligents (STI). Bien que les premières études sur ces systèmes… (more)

▼

Les travaux présentés dans ce mémoire de thèse s’inscrivent dans le cadre des Systèmes de TransportIntelligents (STI). Bien que les premières études sur ces systèmes ont commencé dans les années 60, leurdéveloppement reposant sur les techniques de l’information et de la communication, a atteint sa maturitédans le début des années 80. Les STI, sont composés de différents systèmes et intègrent différents concepts(systèmes embarqués, capteurs intelligents, autoroutes intelligentes, . . .) afin d’optimiser le rendementdes infrastructures routières et répondre aux problèmes quotidiens des congestions. Ce mémoire présentequatre contributions dans le cadre du trafic routier et aborde les problèmes de l’estimation et de lacommande afin d’éliminer les problèmes de congestions « récurrentes ». Le premier point traite unproblème crucial dans le domaine des STI qui est celui de l’estimation. En effet, la mise en oeuvre delois de commande pour réguler le trafic impose de disposer de l’ensemble des informations concernantl’évolution de l’état du trafic. Dans ce contexte, deux algorithmes d’estimation sont proposés. Le premierrepose sur l’emploi du modèle METANET et les techniques de modes de glissement d’ordre supérieur. Lesecond est basé sur les CTM (Cell Transmission Models). Plusieurs études comparatives avec les filtresde Kalman sont proposées. La seconde contribution concerne la régulation du trafic. L’accent est mis surle contrôle d’accès isolé en utilisant les algorithmes issus du mode de glissement d’ordre supérieur. Cettecommande est enrichie en introduisant une commande intégrée combinant le contrôle d’accès et le routagedynamique. L’ensemble des résultats, validé par simulation, est ensuite comparé aux stratégies classiquesnotamment le contrôle d’accès avec l’algorithme ALINEA. La troisième contribution traite des problèmesde coordination. En effet, l’objectif est d’appliquer le principe de la commande prédictive pour contrôlerplusieurs rampes d’accès simultanément. L’ensemble des contributions ont été validées en utilisant desdonnées réelles issues en grande partie de mesures effectuées sur des autoroutes françaises. Les résultatsobtenus ont montré un gain substantiel en termes de performances tels que la diminution du trajet, dutemps d’attente, de la consommation énergétique, ainsi que l’augmentation de la vitesse moyenne. Cesrésultats permettent d’envisager plusieurs perspectives nouvelles de développement des recherches dansce domaine susceptibles d’apporter des solutions intéressantes.

The works presented in this PhD dissertation fit into the framework of Intelligent TransportationSystems. Although the beginnings of these systems have started since the 60s, their development, basedon information and communication technologies, has reached maturity during the early 80s. The ITS usesthe intelligence of different systems (embedded systems, intelligents sensors, intelligents highways, etc.)in order to optimize road infrastructures performances and respond to the daily problems of congestions.The dissertation…

Advisors/Committee Members: Jolly, Daniel (thesis director).

Subjects/Keywords: Systèmes de transport intelligents; Trafic routier; Contrôle d'accès; Routage dynamique; Estimation; Modèles macroscopiques; Commande par mode glissant; Commande prédictive; Intelligent transportation systems; Traffic flow; Ramp metering; Dynamic traffic routing; Estimation; Macroscopic models; Sliding mode control; Model predictive control

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Majid, H. (2014). Contribution à l'estimation et à la commande des systèmes de transport intelligents : Contribution to the estimation and control of intelligent transport systems. (Doctoral Dissertation). Université d'Artois. Retrieved from http://www.theses.fr/2014ARTO0203

Chicago Manual of Style (16^th Edition):

Majid, Hirsh. “Contribution à l'estimation et à la commande des systèmes de transport intelligents : Contribution to the estimation and control of intelligent transport systems.” 2014. Doctoral Dissertation, Université d'Artois. Accessed April 18, 2021. http://www.theses.fr/2014ARTO0203.

MLA Handbook (7^th Edition):

Majid, Hirsh. “Contribution à l'estimation et à la commande des systèmes de transport intelligents : Contribution to the estimation and control of intelligent transport systems.” 2014. Web. 18 Apr 2021.

Vancouver:

Majid H. Contribution à l'estimation et à la commande des systèmes de transport intelligents : Contribution to the estimation and control of intelligent transport systems. [Internet] [Doctoral dissertation]. Université d'Artois; 2014. [cited 2021 Apr 18]. Available from: http://www.theses.fr/2014ARTO0203.

Council of Science Editors:

Majid H. Contribution à l'estimation et à la commande des systèmes de transport intelligents : Contribution to the estimation and control of intelligent transport systems. [Doctoral Dissertation]. Université d'Artois; 2014. Available from: http://www.theses.fr/2014ARTO0203

Loughborough University

21. Schaal, Peter. Observer-based engine air charge characterisation : rapid, observer-assisted engine air charge characterisation using a dynamic dual-ramp testing method.

Degree: PhD, 2018, Loughborough University

URL: http://hdl.handle.net/2134/33247

► Characterisation of modern complex powertrains is a time consuming and expensive process. Little effort has been made to improve the efficiency of testing methodologies used… (more)

Subjects/Keywords: 629.25; Air-path observer; Rapid engine characterisation; Dynamic/transient engine testing; Test time reduction; Joint state and parameter estimation; Unknown input estimation; Mean value engine model; 1-D engine model; Dynamic compensation; Dual-ramp averaging

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Schaal, P. (2018). Observer-based engine air charge characterisation : rapid, observer-assisted engine air charge characterisation using a dynamic dual-ramp testing method. (Doctoral Dissertation). Loughborough University. Retrieved from http://hdl.handle.net/2134/33247

Chicago Manual of Style (16^th Edition):

Schaal, Peter. “Observer-based engine air charge characterisation : rapid, observer-assisted engine air charge characterisation using a dynamic dual-ramp testing method.” 2018. Doctoral Dissertation, Loughborough University. Accessed April 18, 2021. http://hdl.handle.net/2134/33247.

MLA Handbook (7^th Edition):

Schaal, Peter. “Observer-based engine air charge characterisation : rapid, observer-assisted engine air charge characterisation using a dynamic dual-ramp testing method.” 2018. Web. 18 Apr 2021.

Vancouver:

Schaal P. Observer-based engine air charge characterisation : rapid, observer-assisted engine air charge characterisation using a dynamic dual-ramp testing method. [Internet] [Doctoral dissertation]. Loughborough University; 2018. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/2134/33247.

Council of Science Editors:

Schaal P. Observer-based engine air charge characterisation : rapid, observer-assisted engine air charge characterisation using a dynamic dual-ramp testing method. [Doctoral Dissertation]. Loughborough University; 2018. Available from: http://hdl.handle.net/2134/33247

Cornell University

22. ZHU, TONG. TOWARD A SYSTEMATIC APPROACH TO THE FLEET SIZE ESTIMATION OF AUTONOMOUS MOBILITY-ON-DEMAND SYSTEMS.

Degree: M.S., Civil and Environmental Engineering, Civil and Environmental Engineering, 2017, Cornell University

URL: http://hdl.handle.net/1813/51604

► The objective of this study is to provide analytical guidelines for the design of shared-vehicle Autonomous Mobility-on-Demand (AMoD) systems. Specifically, we consider the fundamental issue… (more)

Subjects/Keywords: Transportation; AUTONOMOUS MOBILITY-ON-DEMAND; FLEET SIZE ESTIMATION; Operations research

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APA (6^th Edition):

ZHU, T. (2017). TOWARD A SYSTEMATIC APPROACH TO THE FLEET SIZE ESTIMATION OF AUTONOMOUS MOBILITY-ON-DEMAND SYSTEMS. (Masters Thesis). Cornell University. Retrieved from http://hdl.handle.net/1813/51604

Chicago Manual of Style (16^th Edition):

ZHU, TONG. “TOWARD A SYSTEMATIC APPROACH TO THE FLEET SIZE ESTIMATION OF AUTONOMOUS MOBILITY-ON-DEMAND SYSTEMS.” 2017. Masters Thesis, Cornell University. Accessed April 18, 2021. http://hdl.handle.net/1813/51604.

MLA Handbook (7^th Edition):

ZHU, TONG. “TOWARD A SYSTEMATIC APPROACH TO THE FLEET SIZE ESTIMATION OF AUTONOMOUS MOBILITY-ON-DEMAND SYSTEMS.” 2017. Web. 18 Apr 2021.

Vancouver:

ZHU T. TOWARD A SYSTEMATIC APPROACH TO THE FLEET SIZE ESTIMATION OF AUTONOMOUS MOBILITY-ON-DEMAND SYSTEMS. [Internet] [Masters thesis]. Cornell University; 2017. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/1813/51604.

Council of Science Editors:

ZHU T. TOWARD A SYSTEMATIC APPROACH TO THE FLEET SIZE ESTIMATION OF AUTONOMOUS MOBILITY-ON-DEMAND SYSTEMS. [Masters Thesis]. Cornell University; 2017. Available from: http://hdl.handle.net/1813/51604

Delft University of Technology

23. Hazen, B. (author). Design of an anti-lock brake algorithm based on wheel load measurements.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:fd1edad6-396c-49f5-a0c5-722a49d86521

►

Anti-lock Brake System (ABS) is an active safety system nowadays implemented in every new car and could prevent the wheels from locking during heavy braking.… (more)

Subjects/Keywords: anti-lock brake algorithm; ABS; on-line friction estimation; load sensing

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hazen, B. (. (2016). Design of an anti-lock brake algorithm based on wheel load measurements. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:fd1edad6-396c-49f5-a0c5-722a49d86521

Chicago Manual of Style (16^th Edition):

Hazen, B (author). “Design of an anti-lock brake algorithm based on wheel load measurements.” 2016. Masters Thesis, Delft University of Technology. Accessed April 18, 2021. http://resolver.tudelft.nl/uuid:fd1edad6-396c-49f5-a0c5-722a49d86521.

MLA Handbook (7^th Edition):

Hazen, B (author). “Design of an anti-lock brake algorithm based on wheel load measurements.” 2016. Web. 18 Apr 2021.

Vancouver:

Hazen B(. Design of an anti-lock brake algorithm based on wheel load measurements. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Apr 18]. Available from: http://resolver.tudelft.nl/uuid:fd1edad6-396c-49f5-a0c5-722a49d86521.

Council of Science Editors:

Hazen B(. Design of an anti-lock brake algorithm based on wheel load measurements. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:fd1edad6-396c-49f5-a0c5-722a49d86521

University of Minnesota

24. Wu, Xinkai. Modeling traffic flow on oversaturated arterials.

Degree: PhD, Civil Engineering, 2010, University of Minnesota

URL: http://purl.umn.edu/101394

► Traffic congestion is a national issue in the United States and has gotten worse in regions of all sizes. Now, more and more intersections are… (more)

▼ Traffic congestion is a national issue in the United States and has gotten worse in regions of all sizes. Now, more and more intersections are operated in oversaturated situations where the traffic demand exceeds the capacity of the system. Although a significant amount of literature has been devoted to how to manage oversaturated traffic signal systems, our understanding of the characteristics of oversaturation remains limited, particularly with regard to identification of oversaturation and the transition process from under-saturated condition to oversaturation. It has become increasingly obvious that successful traffic management requires efficient methods to identify and model oversaturated conditions. This research moves towards a better understanding of oversaturation, by 1) providing coherent methodologies to quantify oversaturation and 2) developing a simplified model to describe oversaturation at signalized intersections based on high-resolution traffic signal data collected by the SMART-SIGNAL (Systematic Monitoring of Arterial Road Traffic Signals) system. In particular, the research focuses on the following four areas: 1) Quantification of oversaturation: Traditional definitions of oversaturation are not applicable for existing detection systems. This research circumvents this issue by quantifying the detrimental effects of oversaturation on signal operations, both temporally and spatially. In the temporal dimension, the detrimental effect is characterized by a residual queue at the end of a cycle, which occupies a portion of green time in the next cycle. In the spatial dimension, the detrimental effect is characterized by a downstream spillover, which blocks the traffic and reduces usable green time. From these observations, we derive two types of an oversaturation severity index (OSI): one temporally-based (T-OSI) and one spatially-based (S-OSI). Both T-OSI and S-OSI are designed to yield a ratio between the unusable green time due to detrimental effects and the total available green time in a cycle, using high resolution traffic signal data. T-OSI is quantified by estimating the residual queue length; and S-OSI is quantified by measuring the time period of spillover. Since different types of OSI (T-OSI or S-OSI) point to different underlying causes of oversaturation, this research has the potential to provide guidance for the mitigation strategies of signal oversaturation. 2) Real-time queue length estimation for congested intersections: To quantify T-OSI, this research proposes a novel shockwave-based algorithm to estimate time-dependent queue length even when the signal links are congested with long queues, a situation that the traditional input-output approach for queue length estimation cannot handle. Using high-resolution "event-based" traffic signal data, the new algorithm first identifies traffic state changes; and then applies Lighthill-Whitham-Richards (LWR) shockwave theory to estimate maximum and minimum (i.e. residual) queue length. This algorithm is also applicable for other…

Subjects/Keywords: Arterial Fundamental Diagram; Arterial Traffic Flow Theory - Shockwave Profile Model (SPM); Oversaturation; Queue Length Estimation; Queue-Over-Detector (QOD); Spillover; Civil Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wu, X. (2010). Modeling traffic flow on oversaturated arterials. (Doctoral Dissertation). University of Minnesota. Retrieved from http://purl.umn.edu/101394

Chicago Manual of Style (16^th Edition):

Wu, Xinkai. “Modeling traffic flow on oversaturated arterials.” 2010. Doctoral Dissertation, University of Minnesota. Accessed April 18, 2021. http://purl.umn.edu/101394.

MLA Handbook (7^th Edition):

Wu, Xinkai. “Modeling traffic flow on oversaturated arterials.” 2010. Web. 18 Apr 2021.

Vancouver:

Wu X. Modeling traffic flow on oversaturated arterials. [Internet] [Doctoral dissertation]. University of Minnesota; 2010. [cited 2021 Apr 18]. Available from: http://purl.umn.edu/101394.

Council of Science Editors:

Wu X. Modeling traffic flow on oversaturated arterials. [Doctoral Dissertation]. University of Minnesota; 2010. Available from: http://purl.umn.edu/101394

California State University – Sacramento

25. Tesfagiyorgis, Biniam. Performance analysis on frequency and phasor estimation techniques in power systems.

Degree: MS, Electrical and Electronic Engineering, 2020, California State University – Sacramento

URL: http://hdl.handle.net/10211.3/216885

► Frequency and phasor are two important parameters in power systems. Accurate estimation of these parameters is required for understanding the system operating condition. Many algorithms… (more)

Subjects/Keywords: Power system security; Joint frequency and phasor estimation algorithm using DFT samples; Accurate dynamic phasor estimation based on the signal model

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tesfagiyorgis, B. (2020). Performance analysis on frequency and phasor estimation techniques in power systems. (Masters Thesis). California State University – Sacramento. Retrieved from http://hdl.handle.net/10211.3/216885

Chicago Manual of Style (16^th Edition):

Tesfagiyorgis, Biniam. “Performance analysis on frequency and phasor estimation techniques in power systems.” 2020. Masters Thesis, California State University – Sacramento. Accessed April 18, 2021. http://hdl.handle.net/10211.3/216885.

MLA Handbook (7^th Edition):

Tesfagiyorgis, Biniam. “Performance analysis on frequency and phasor estimation techniques in power systems.” 2020. Web. 18 Apr 2021.

Vancouver:

Tesfagiyorgis B. Performance analysis on frequency and phasor estimation techniques in power systems. [Internet] [Masters thesis]. California State University – Sacramento; 2020. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/10211.3/216885.

Council of Science Editors:

Tesfagiyorgis B. Performance analysis on frequency and phasor estimation techniques in power systems. [Masters Thesis]. California State University – Sacramento; 2020. Available from: http://hdl.handle.net/10211.3/216885

University of Oregon

26. Nakamura, Bryson. Analysis of Unique Myoelectric Characteristics in Lower-Extremity Musculature During Locomotive State Transitions.

Degree: PhD, Department of Human Physiology, 2016, University of Oregon

URL: http://hdl.handle.net/1794/20544

► Lower-extremity amputees face numerous challenges when returning to daily activities. Amongst these challenges is the ability to safely and dynamically transition from one locomotor state… (more)

▼ Lower-extremity amputees face numerous challenges when returning to daily activities. Amongst these challenges is the ability to safely and dynamically transition from one locomotor state to another. Switching between level-ground, ramp, and stair locomotion poses an increased risk as lower-extremity functionality is compromised. Powered prosthetics have been proposed as a solution to this problem. Hypothetically, powered prosthetics would be able to return full functional to the amputated limb. The most common and successful source of information used in algorithms for lower-extremity prosthetics has been electromyography. However, in practice, amputees remain unable to easily actuate the mechanized joints of powered prostheses. Therefore, the current project aimed to identify myoelectric activation differences in lower-extremity musculature during the gait cycles preceding locomotor transition in able-bodied, trans-tibial, and trans-femoral subjects to assist efforts in developing robust classification algorithms for locomotor transitions. Analysis of electromyography was completed to determine if there were periods of activation where classification algorithms could utilize differences in myoelectric activation to appropriately control joint actuation in a subset of eight transitions that included level-ground locomotion and switching to either ramp or stair locomotion and vice versa. Ramp transitions were fundamentally similar to level-ground locomotion and elicited no differences in myoelectric activation. Stair transitions were found to alter muscle activation patterns in able-body and trans-tibial subjects. Trans-femoral subjects differentiated from able-bodied and trans-tibial subjects due to increased recruitment pattern variability. These patterns are distinct and may suggest individual learning patterns within the trans-femoral amputee population. Further investigation of these patterns may be warranted. Findings within able-bodied and trans-tibial subjects suggest common transition based differences within each respective population. Trans-tibial classification algorithms may be developed to utilize this information, using schemes that are focused on important areas during the gait cycle. Advisors/Committee Members: Hahn, Michael (advisor).

Subjects/Keywords: Amputee; Locomotion; Ramp; Stair; Transition

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APA (6^th Edition):

Nakamura, B. (2016). Analysis of Unique Myoelectric Characteristics in Lower-Extremity Musculature During Locomotive State Transitions. (Doctoral Dissertation). University of Oregon. Retrieved from http://hdl.handle.net/1794/20544

Chicago Manual of Style (16^th Edition):

Nakamura, Bryson. “Analysis of Unique Myoelectric Characteristics in Lower-Extremity Musculature During Locomotive State Transitions.” 2016. Doctoral Dissertation, University of Oregon. Accessed April 18, 2021. http://hdl.handle.net/1794/20544.

MLA Handbook (7^th Edition):

Nakamura, Bryson. “Analysis of Unique Myoelectric Characteristics in Lower-Extremity Musculature During Locomotive State Transitions.” 2016. Web. 18 Apr 2021.

Vancouver:

Nakamura B. Analysis of Unique Myoelectric Characteristics in Lower-Extremity Musculature During Locomotive State Transitions. [Internet] [Doctoral dissertation]. University of Oregon; 2016. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/1794/20544.

Council of Science Editors:

Nakamura B. Analysis of Unique Myoelectric Characteristics in Lower-Extremity Musculature During Locomotive State Transitions. [Doctoral Dissertation]. University of Oregon; 2016. Available from: http://hdl.handle.net/1794/20544

Delft University of Technology

27. Zhou, Moyu (author). Analysis of current Dutch traffic management effectiveness with automated vehicles: a ramp-metering case study: Simulation Study.

Degree: 2019, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:ecb3796f-ff68-400f-bf2d-a1ad3b340154

► Automated vehicles are conventional vehicles equipped with advanced sensors, controller and actuators. They achieve intelligent information exchange with the environment through the onboard sensing and… (more)

▼ Automated vehicles are conventional vehicles equipped with advanced sensors, controller and actuators. They achieve intelligent information exchange with the environment through the onboard sensing and cooperative system. vehicles are possible to have situation awareness and automatically analyze the safety and dangerous state of journeys. Finally vehicles can reach destinations following drivers' willing. The ongoing research on intelligent vehicles is mainly about improving the safety, comfort, efficiency and provide an excellent human-car interface. As a self-organizing system, the traffic system is quite complicated. There are many disturbance factors to lead to various traffic problems. One of the daily occurring problems is congestion on the motorway. In order to reduce congestion, Rijkswaterstaat applies various dynamic traffic management (DTM) measures to guide the traffic. It works well nowadays in conventional traffic. However, automated vehicles entered the market recently and will start to play an essential role in future traffic. The automated vehicles' reaction to DTM measures may be different from conventional vehicles while the traffic problems still exist. Therefore, it is necessary to research the effectiveness of current Dutch traffic management in automated vehicles. This thesis aims to investigate the effectiveness of current Dutch DTM measures with driver assistant and partially automated vehicles. Due to the time limitation, only the ramp metering measure will be researched through a simulation study. Therefore the main research question is 'How partial automated driving influences the performance of current Dutch dynamic traffic management system and how can this be evaluated via simulation?'. Three methods are applied, including literature review, simulation and statistical analysis. The literature part reviews levels of automation, various longitudinal and lateral vehicle motion models, which are chosen and modified in the simulation. Many ramp metering algorithms are also introduced in the literature review. The ramp metering controller in the simulation follows RWS algorithm. Besides, the motorway demand and the penetration rate of level 1 and 2 vehicles are two input of the simulation. From the simulation results, it is concluded that the level 2 automation consisting of Adaptive Cruise Control (ACC) and Lane Change Assistance (LCA) system brings a negative impact on the motorway capacity. The ramp metering measure remains efficient if the penetration rate of level 2 vehicles is low. However, when the capacity reduces to the critical flow set up in the ramp metering controller, Ramp metering loses its efficiency. The parameters in the ramp metering controller therefore, require an update. For further research, it is recommended to simulate the same scenarios with different ramp metering algorithms. Since the functions of the algorithms are different, there might be other robust control algorithms for automated vehicles. Besides, another limitation of this thesis is that the automation… Advisors/Committee Members: van Lint, Hans (graduation committee), Calvert, Simeon (mentor), Taale, Henk (mentor), Schakel, Wouter (mentor), Pan, Wei (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: Dynamic Traffic Management; Ramp Metering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zhou, M. (. (2019). Analysis of current Dutch traffic management effectiveness with automated vehicles: a ramp-metering case study: Simulation Study. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:ecb3796f-ff68-400f-bf2d-a1ad3b340154

Chicago Manual of Style (16^th Edition):

Zhou, Moyu (author). “Analysis of current Dutch traffic management effectiveness with automated vehicles: a ramp-metering case study: Simulation Study.” 2019. Masters Thesis, Delft University of Technology. Accessed April 18, 2021. http://resolver.tudelft.nl/uuid:ecb3796f-ff68-400f-bf2d-a1ad3b340154.

MLA Handbook (7^th Edition):

Zhou, Moyu (author). “Analysis of current Dutch traffic management effectiveness with automated vehicles: a ramp-metering case study: Simulation Study.” 2019. Web. 18 Apr 2021.

Vancouver:

Zhou M(. Analysis of current Dutch traffic management effectiveness with automated vehicles: a ramp-metering case study: Simulation Study. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Apr 18]. Available from: http://resolver.tudelft.nl/uuid:ecb3796f-ff68-400f-bf2d-a1ad3b340154.

Council of Science Editors:

Zhou M(. Analysis of current Dutch traffic management effectiveness with automated vehicles: a ramp-metering case study: Simulation Study. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:ecb3796f-ff68-400f-bf2d-a1ad3b340154

Georgia Tech

28. Chilukuri, Bhargava Rama. Optimal Ramp Metering of Freeway Corridors.

Degree: PhD, Civil and Environmental Engineering, 2015, Georgia Tech

URL: http://hdl.handle.net/1853/56204

► Ramp meters have been used for congestion management on freeways since the 1960s to maximize freeway capacity by controlling on-ramp flows. Traditionally, the focus has… (more)

▼ Ramp meters have been used for congestion management on freeways since the 1960s to maximize freeway capacity by controlling on-ramp flows. Traditionally, the focus has been to develop rule-based algorithms and optimal control case studies. This led to a host of algorithms and methods which cannot be proven to provide an optimal control and the case studies does not provide a systematic understanding of the characteristics of optimal control and its influence on traffic dynamics. Moreover, optimal is not easy to achieve in practice due to the limited storage on the on-ramps. Towards this end, this dissertation systematically studies the optimality conditions for the case of unlimited storage and spatiotemporal evolution of control and its corresponding traffic dynamics on freeway and ramps under queue constraint, carefully taking the traffic dynamics into account. A Kinematic Wave model of the freeway-ramps system is optimized for minimal total delay. The optimality conditions for the case of unlimited ramp storage are studied using Moskowitz functions that provide several interesting insights for different scenarios, including the case of limited storage. This dissertation shows that the current problem posed as a nonlinear coupled PDE system with a nonlinear merge model cannot be solved analytically. This study also shows that the discrete-time nonlinear formulation solved with simulation-based optimization does not converge in reasonable time. To overcome this, the problem is reposed as a LP formulation that includes capacity drop. For discrete formulation, this study develops an error-free solution to the KW model with a source term that enhanced the quality of the numerical solution. This study identifies four distinct regions in the state surface with distinct metering patterns. Explicit modeling of ramps enabled correlating the initialization and termination times of the metering patterns with the evolution of traffic dynamics on the freeways and ramps. Using these results, this dissertation presents a hybrid isolated ramp metering algorithm that outperforms existing methods. Advisors/Committee Members: Laval, Jorge A (advisor), Hunter, Michael (advisor), Leonard, John (advisor), Erera, Alan (advisor).

Subjects/Keywords: Optimal Ramp Metering; Hybrid Control

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chilukuri, B. R. (2015). Optimal Ramp Metering of Freeway Corridors. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/56204

Chicago Manual of Style (16^th Edition):

Chilukuri, Bhargava Rama. “Optimal Ramp Metering of Freeway Corridors.” 2015. Doctoral Dissertation, Georgia Tech. Accessed April 18, 2021. http://hdl.handle.net/1853/56204.

MLA Handbook (7^th Edition):

Chilukuri, Bhargava Rama. “Optimal Ramp Metering of Freeway Corridors.” 2015. Web. 18 Apr 2021.

Vancouver:

Chilukuri BR. Optimal Ramp Metering of Freeway Corridors. [Internet] [Doctoral dissertation]. Georgia Tech; 2015. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/1853/56204.

Council of Science Editors:

Chilukuri BR. Optimal Ramp Metering of Freeway Corridors. [Doctoral Dissertation]. Georgia Tech; 2015. Available from: http://hdl.handle.net/1853/56204

Virginia Tech

29. Rivers, Bridgette C. Merging Symbols, Space and Identity in Appalachia: An Examination of the Ramp.

Degree: MS, Geography, 2013, Virginia Tech

URL: http://hdl.handle.net/10919/23315

► Over the past ten years, the ramp, a traditional Appalachian food, has invaded elite culinary circles outside its native culinary region of Appalachia. Ramps (Allium… (more)

Subjects/Keywords: Ramp; Appalachia; Identity; Symbol; Place

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Rivers, B. C. (2013). Merging Symbols, Space and Identity in Appalachia: An Examination of the Ramp. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/23315

Chicago Manual of Style (16^th Edition):

Rivers, Bridgette C. “Merging Symbols, Space and Identity in Appalachia: An Examination of the Ramp.” 2013. Masters Thesis, Virginia Tech. Accessed April 18, 2021. http://hdl.handle.net/10919/23315.

MLA Handbook (7^th Edition):

Rivers, Bridgette C. “Merging Symbols, Space and Identity in Appalachia: An Examination of the Ramp.” 2013. Web. 18 Apr 2021.

Vancouver:

Rivers BC. Merging Symbols, Space and Identity in Appalachia: An Examination of the Ramp. [Internet] [Masters thesis]. Virginia Tech; 2013. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/10919/23315.

Council of Science Editors:

Rivers BC. Merging Symbols, Space and Identity in Appalachia: An Examination of the Ramp. [Masters Thesis]. Virginia Tech; 2013. Available from: http://hdl.handle.net/10919/23315

30. Sophia S. Transient analyses of State dependent queues with Catastrophes and associated fluid Queues;.

Degree: Transient analyses of State dependent queues with Catastrophes and associated fluid Queues, 2014, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/30872

►

Queueing models play a vital role in the performance anal newlineysis of a wide range of systems in computer communications and an newlinealytical models of… (more)

Subjects/Keywords: Markovian queue; Numerical illustra tions

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

S, S. (2014). Transient analyses of State dependent queues with Catastrophes and associated fluid Queues;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/30872

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

S, Sophia. “Transient analyses of State dependent queues with Catastrophes and associated fluid Queues;.” 2014. Thesis, Anna University. Accessed April 18, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/30872.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

S, Sophia. “Transient analyses of State dependent queues with Catastrophes and associated fluid Queues;.” 2014. Web. 18 Apr 2021.

Vancouver:

S S. Transient analyses of State dependent queues with Catastrophes and associated fluid Queues;. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Apr 18]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/30872.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

S S. Transient analyses of State dependent queues with Catastrophes and associated fluid Queues;. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/30872

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Open Access Theses and Dissertations