Improving The Estimation Of Travel Demand For Traffic Simulation
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Improving The Estimation Of Travel Demand For Traffic Simulation
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Author :
language : en
Publisher:
Release Date : 2005
Improving The Estimation Of Travel Demand For Traffic Simulation written by 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.
Many current traffic management schemes are tested and implemented using traffic simulation. An Origin- Destination (OD) matrix is an ideal input for such simulations. The underlying travel demand pattern produces observed link counts. One could use these counts to reconstruct the OD matrix. An offline approach to estimate a static OD matrix over the peak period for freeway sections using these counts is proposed in this research. Almost all the offline methods use linear models to approximate the relationship between the on-ramp and off-ramp counts. Previous work indicates that the use of a traffic flow model embedded in a search routine performs better than these linear models. In this research, that approach is enhanced using a microscopic traffic simulator, AIMSUN, and a gradient-based optimization routine, MINOS, interfaced to estimate an OD matrix. The problem is highly non-linear and non-smooth, and the optimization routine finds multiple local minima, but cannot guarantee a global minima. However, with a number of starting "seed" matrices, an OD matrix with a good fit in terms of reproducing traffic counts can be estimated. The dominance of the mainline counts in the OD estimation and an identifiability issue is indicated from the experiments. The quality of the estimates improves as the specification error, introduced due to the discrepancy between AIMSUN and the real-world process that generates the on-ramp and off-ramp counts, reduces.
Improving The Estimation Of Travel Demand For Traffic Simulation
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Author : Yao Wu
language : en
Publisher:
Release Date : 2004
Improving The Estimation Of Travel Demand For Traffic Simulation written by Yao Wu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Algorithms categories.
This report examined several methods for estimating Origin-Destination (OD) matrices for freeways using loop detector data. Least squares based methods were compared in terms of both off-line and on-line estimation. Simulated data and observed data were used for evaluating the static and recursive estimators. For off-line estimation, four fully constrained least squares methods were compared. The results showed that the variations of a constrained least squares approach produced more efficient estimates. For on-line estimation, two recursive least squares algorithms were examined. The first method extends Kalman Filtering to satisfy the natural constraints of the OD split parameters. The second was developed from sequential quadratic programming. These algorithms showed different capabilities to capture an abrupt change in the split parameters. Practical recommendations of the choice of different algorithms are given.
Annual Report
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Author : University of Minnesota. Intelligent Transportation Systems Institute
language : en
Publisher:
Release Date : 1999
Annual Report written by University of Minnesota. Intelligent Transportation Systems Institute and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Intelligent Vehicle Highway Systems categories.
Estimating Toll Road Demand And Revenue
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Author : David S. Kriger
language : en
Publisher: Transportation Research Board
Release Date : 2006
Estimating Toll Road Demand And Revenue written by David S. Kriger and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Transportation categories.
Modeling Mobility With Open Data
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Author : Michael Behrisch
language : en
Publisher: Springer
Release Date : 2015-03-11
Modeling Mobility With Open Data written by Michael Behrisch and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-11 with Technology & Engineering categories.
This contributed volume contains the conference proceedings of the Simulation of Urban Mobility (SUMO) conference 2014, Berlin. The included research papers cover a wide range of topics in traffic planning and simulation, including open data, vehicular communication, e-mobility, urban mobility, multimodal traffic as well as usage approaches. The target audience primarily comprises researchers and experts in the field, but the book may also be beneficial for graduate students.
Traffic Simulation And Data
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Author : Winnie Daamen
language : en
Publisher: CRC Press
Release Date : 2014-09-17
Traffic Simulation And Data written by Winnie Daamen and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-09-17 with Mathematics categories.
A single source of information for researchers and professionals, Traffic Simulation and Data: Validation Methods and Applications offers a complete overview of traffic data collection, state estimation, calibration and validation for traffic modelling and simulation. It derives from the Multitude Project-a European Cost Action project that incorpo
Handbook On Artificial Intelligence And Transport
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Author : Hussein Dia
language : en
Publisher: Edward Elgar Publishing
Release Date : 2023-10-06
Handbook On Artificial Intelligence And Transport written by Hussein Dia and has been published by Edward Elgar Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-10-06 with Computers categories.
With AI advancements eliciting imminent changes to our transport systems, this enlightening Handbook presents essential research on this evolution of the transportation sector. It focuses on not only urban planning, but relevant themes in law and ethics to form a unified resource on the practicality of AI use.
Improving Transportation Data For Mobile Source Emission Estimates
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Author : Arun Chatterjee
language : en
Publisher: Transportation Research Board
Release Date : 1997
Improving Transportation Data For Mobile Source Emission Estimates written by Arun Chatterjee and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Law categories.
Digital Urban Modeling And Simulation
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Author : Stefan Müller Arisona
language : en
Publisher: Springer
Release Date : 2012-07-06
Digital Urban Modeling And Simulation written by Stefan Müller Arisona and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-07-06 with Computers categories.
This book is thematically positioned at the intersections of Urban Design, Architecture, Civil Engineering and Computer Science, and it has the goal to provide specialists coming from respective fields a multi-angle overview of state-of-the-art work currently being carried out. It addresses both newcomers who wish to obtain more knowledge about this growing area of interest, as well as established researchers and practitioners who want to keep up to date. In terms of organization, the volume starts out with chapters looking at the domain at a wide-angle and then moves focus towards technical viewpoints and approaches.
Transport Simulation
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Author : Edward Chung
language : en
Publisher: CRC Press
Release Date : 2019-05-07
Transport Simulation written by Edward Chung and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-05-07 with Science categories.
In recent years, the transport simulation of large road networks has become far more rapid and detailed, and many exciting developments in this field have emerged. Within this volume, the authors describe the simulation of automobile, pedestrian, and rail traffic coupled to new applications, such as the embedding of traffic simulation into driving simulators, to give a more realistic environment of driver behavior surrounding the subject vehicle. New approaches to traffic simulation are described, including the hybrid mesoscopic-microscopic model and floor-field agent-based simulation. Written by an invited panel of experts, this book addresses students, engineers, and scholars, as well as anyone who needs a state-of-the-art overview of transport simulation today.