Evaluation Of Ramp Control Algorithms Using A Microscopic Traffic Simulation Laboratory Mitsim
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Evaluation Of Ramp Control Algorithms Using A Microscopic Traffic Simulation Laboratory Mitsim
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Author : Masroor Hasan
language : en
Publisher:
Release Date : 1999
Evaluation Of Ramp Control Algorithms Using A Microscopic Traffic Simulation Laboratory Mitsim written by Masroor Hasan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
Evaluation Of Ramp Meter Effectiveness For Wisconsin Freeways
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Author :
language : en
Publisher:
Release Date : 2004
Evaluation Of Ramp Meter Effectiveness For Wisconsin Freeways written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Express highway interchanges categories.
Informs Conference Program
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Author : Institute for Operations Research and the Management Sciences. National Meeting
language : en
Publisher:
Release Date : 1998
Informs Conference Program written by Institute for Operations Research and the Management Sciences. National Meeting and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Industrial management categories.
Development And Evaluation Of Selected Mobility Applications For Vii
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Author : Steven E. Shladover
language : en
Publisher:
Release Date : 2011
Development And Evaluation Of Selected Mobility Applications For Vii written by Steven E. Shladover and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Highway communications categories.
"This report describes the development of two of the three mobility applications that PATH has developed and evaluated under the sponsorship of the FHWA Exploratory Advanced Research Program, with cost share funding provided by Caltrans Contract 65A0351. These applications are intended to use DSRC wireless communications among vehicles and between vehicles and the roadway infrastructure to improve mobility on limited-access highways. The first application combines ramp metering with variable speed limits to enhance control of traffic so that traffic flow breakdowns can be deferred or avoided at bottleneck locations. The second application uses vehicle-vehicle communication to improve the performance of adaptive cruise control systems so that they can operate safely with smaller longitudinal gaps and vehicle-roadside communication to provide adjustments to their set speed and gap settings to adapt to changes in local traffic conditions."--Abstract, p. i.
Evaluation Of Coordinated And Local Ramp Metering Algorithm Using Microscopic Traffic Simulation
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Author : Joseph Ralph Scariza
language : en
Publisher:
Release Date : 2003
Evaluation Of Coordinated And Local Ramp Metering Algorithm Using Microscopic Traffic Simulation written by Joseph Ralph Scariza and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Design Field Implementation And Evaluation Of Adaptive Ramp Metering Algorithms
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Author : Dengfeng Sun
language : en
Publisher:
Release Date : 2005
Design Field Implementation And Evaluation Of Adaptive Ramp Metering Algorithms written by Dengfeng Sun and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Algorithms categories.
The main objectives of Task Order 4136 are (1) the design of improved freeway on-ramp metering strategies that make use of recent developments in traffic data collection, traffic simulation, and control theory, and (2) the testing of these methods on a 14-mile segment of Interstate 210 Westbound in southern California. To date, the major accomplishments of this project include (i) the development of a complete procedure for constructing and calibrating a microscopic freeway traffic model using the Vissim microsimulator, which was applied successfully to the full I-210 test site, (ii) a simulation study, using the calibrated Vissim I-210 model, comparing the fixed-rate, Percent Occupancy, and Alinea local ramp metering schemes, which showed that Alinea can improve freeway conditions when mainline occupancies are measured upstream of the on-ramp (as on I-210 and most California freeways), as well as when occupancy sensors are downstream of the on-ramp, (iii) development of computationally efficient macroscopic freeway traffic models, the Modified Cell Transmission Model (MCTM) and Switching-Mode Model (SMM), validation of these models on a 2-mile segment of I-210, and determination of observability and controllability properties of the SMM modes, (iv) design of a semi-automated method for calibrating the parameters of the MCTM and SMM, which, when applied to an MCTM representation of the full I-210 segment, was able to reproduce the approximate behavior of traffic congestion, yielding about 2% average error in the predicted Total Travel Time (TTT), and (v) development of a new technique for generating optimal coordinated ramp metering plans, which minimizes a TTT-like objective function. Simulation results for a macroscopic model of the 14-mile I-210 segment have shown that the optimal plan predicts an 8.4% savings in TTT, with queue constraints, over the 5-hour peak period.
Evaluation And Improvement Of The Stratified Ramp Metering Algorithm Through Microscopic Simulation
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Author : Panos G. Michalopoulos
language : en
Publisher:
Release Date : 2005
Evaluation And Improvement Of The Stratified Ramp Metering Algorithm Through Microscopic Simulation written by Panos G. Michalopoulos and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Computer algorithms categories.
A new ramp metering strategy implemented on the Twin Cities freeway system to reduce ramp waiting times was evaluated through microsimulation of freeway activity. The study compared Stratified Ramp Metering strategy with the previous Zone Metering Strategy and with no control strategy. Comparison with Zone, which was designed to favor freeway flow, showed the new strategy succeeded in greatly reducing ramp delays and lines. When compared to the results of no control strategy, it reduces freeway travel time, increases freeway speed, smoothes the flow of traffic, and reduces the number of stops. However, travel time, fuel consumption and pollutant emissions are unpredictable under the newer system. Compared to no control strategy, such measures of effectiveness may improve or worsen depending on the freeway patterns and demand. Based on these findings, the researchers will seek improvements to the design of the Stratified Ramp Metering algorithm so as to factor in disruptive traffic patterns.
Development And Evaluation Of A Multi Agent Approach To Ramp Metering Algorithm Using Traffic Simulation
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Author : Sarintorn Winyoopadit
language : en
Publisher:
Release Date : 2008
Development And Evaluation Of A Multi Agent Approach To Ramp Metering Algorithm Using Traffic Simulation written by Sarintorn Winyoopadit and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Electronic traffic controls categories.
Development And Evaluation Of A Calibration And Validation Procedure For Microscopic Simulation Models
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Author : Brian Park
language : en
Publisher:
Release Date : 2004
Development And Evaluation Of A Calibration And Validation Procedure For Microscopic Simulation Models written by Brian Park and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Computer programs categories.
Microscopic traffic simulation models have been widely accepted and applied in transportation engineering and planning practice for the past decades because simulation is cost-effective, safe, and fast. To achieve high fidelity and credibility for a traffic simulation model, calibration and validation are of utmost importance. Most calibration efforts reported in the literature have focused on the informal practice with a specific simulation model, but seldom did they propose a systematic procedure or guideline for simulation model calibration and validation. The purpose of this study was to develop and evaluate a procedure for microscopic simulation model calibration and validation. Three widely used microscopic traffic simulation models, VISSIM, PARAMICS, and CORSIM, were selected for model review and practice of model calibration and validation. The validity of the proposed procedure was evaluated and demonstrated via two case studies including an actuated signalized intersection and a 5-mile freeway segment with a lane-closure work zone. The simulation results were compared against the field data to determine the performance of the calibrated models. The proposed procedure yielded acceptable results for all applications, thus confirming that it was effective for the different networks and simulation models used in the study. Although the calibrated parameters generated the performance measures that were representative of the field conditions, the simulation results of the default parameters were significantly different from the field data.
Motorway Access Control
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Author : D. Owens
language : en
Publisher:
Release Date : 1990
Motorway Access Control written by D. Owens and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Electronic traffic controls categories.