Crash Prone Traffic Flow Dynamics
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Crash Prone Traffic Flow Dynamics
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Author : John N. Hourdos
language : en
Publisher:
Release Date : 2005
Crash Prone Traffic Flow Dynamics written by John N. Hourdos and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
Traffic And Granular Flow 01
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Author : Minoru Fukui
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
Traffic And Granular Flow 01 written by Minoru Fukui and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Mathematics categories.
During the last decade physicists, engineers and computer scientists have joined in an enormously fruitful dialogue about traffic and granular flow. Cars and sand grains have in common, that they interact irreversibly, which is the reason for similar jamming phenomena. The main difference is that car drivers choose their destination and route individually, while grains follow external driving forces. This book gives an overview about the progress in modelling, computer simulation, experiments and field observations, which was reached within the last two years. The contributions are based on the International Workshop Traffic and Granular Flow '01, which took place in Nagoya, 15 - 17 October 2001. Topics include a critical classification of models for highway traffic, new technological applications, friction and arching phenomena in pedestrian traffic, scale free networks and internet traffic, instabilities and fluctuations in avalanches and granular pipe flow.
Introduction To Modern Traffic Flow Theory And Control
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Author : Boris S. Kerner
language : en
Publisher: Springer Science & Business Media
Release Date : 2009-09-16
Introduction To Modern Traffic Flow Theory And Control written by Boris S. Kerner and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-09-16 with Technology & Engineering categories.
The understanding of empirical traf?c congestion occurring on unsignalized mul- lane highways and freeways is a key for effective traf?c management, control, or- nization, and other applications of transportation engineering. However, the traf?c ?ow theories and models that dominate up to now in transportation research journals and teaching programs of most universities cannot explain either traf?c breakdown or most features of the resulting congested patterns. These theories are also the - sis of most dynamic traf?c assignment models and freeway traf?c control methods, which therefore are not consistent with features of real traf?c. For this reason, the author introduced an alternative traf?c ?ow theory called three-phase traf?c theory, which can predict and explain the empirical spatiot- poral features of traf?c breakdown and the resulting traf?c congestion. A previous book “The Physics of Traf?c” (Springer, Berlin, 2004) presented a discussion of the empirical spatiotemporal features of congested traf?c patterns and of three-phase traf?c theory as well as their engineering applications. Rather than a comprehensive analysis of empirical and theoretical results in the ?eld, the present book includes no more empirical and theoretical results than are necessary for the understanding of vehicular traf?c on unsignalized multi-lane roads. The main objectives of the book are to present an “elementary” traf?c ?ow theory and control methods as well as to show links between three-phase traf?c t- ory and earlier traf?c ?ow theories. The need for such a book follows from many commentsofcolleaguesmadeafterpublicationofthebook“ThePhysicsofTraf?c”.
Traffic Flow Dynamics
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Author : Martin Treiber
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-10-11
Traffic Flow Dynamics written by Martin Treiber and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-10-11 with Science categories.
This textbook provides a comprehensive and instructive coverage of vehicular traffic flow dynamics and modeling. It makes this fascinating interdisciplinary topic, which to date was only documented in parts by specialized monographs, accessible to a broad readership. Numerous figures and problems with solutions help the reader to quickly understand and practice the presented concepts. This book is targeted at students of physics and traffic engineering and, more generally, also at students and professionals in computer science, mathematics, and interdisciplinary topics. It also offers material for project work in programming and simulation at college and university level. The main part, after presenting different categories of traffic data, is devoted to a mathematical description of the dynamics of traffic flow, covering macroscopic models which describe traffic in terms of density, as well as microscopic many-particle models in which each particle corresponds to a vehicle and its driver. Focus chapters on traffic instabilities and model calibration/validation present these topics in a novel and systematic way. Finally, the theoretical framework is shown at work in selected applications such as traffic-state and travel-time estimation, intelligent transportation systems, traffic operations management, and a detailed physics-based model for fuel consumption and emissions.
Feedback Control Theory For Dynamic Traffic Assignment
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Author : Pushkin Kachroo
language : en
Publisher: Springer
Release Date : 2018-05-16
Feedback Control Theory For Dynamic Traffic Assignment written by Pushkin Kachroo and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-16 with Technology & Engineering categories.
This book develops a methodology for designing feedback control laws for dynamic traffic assignment (DTA) exploiting the introduction of new sensing and information-dissemination technologies to facilitate the introduction of real-time traffic management in intelligent transportation systems. Three methods of modeling the traffic system are discussed: partial differential equations representing a distributed-parameter setting; continuous-time ordinary differential equations (ODEs) representing a continuous-time lumped-parameter setting; and discreet-time ODEs representing a discrete-time lumped-parameter setting. Feedback control formulations for reaching road-user-equilibrium are presented for each setting and advantages and disadvantage of using each are addressed. The closed-loop methods described are proposed expressly to avoid the counter-productive shifting of bottlenecks from one route to another because of driver over-reaction to routing information. The second edition of Feedback Control Theory for Dynamic Traffic Assignment has been thoroughly updated with completely new chapters: a review of the DTA problem and emphasizing real-time-feedback-based problems; an up-to-date presentation of pertinent traffic-flow theory; and a treatment of the mathematical solution to the traffic dynamics. Techinques accounting for the importance of entropy are further new inclusions at various points in the text. Researchers working in traffic control will find the theoretical material presented a sound basis for further research; the continual reference to applications will help professionals working in highway administration and engineering with the increasingly important task of maintaining and smoothing traffic flow; the extensive use of end-of-chapter exercises will help the graduate student and those new to the field to extend their knowledge.
Uncovering Temporal Dynamics In Traffic Safety Application Of Duration Based Models For Diagnostic And Predictive Analysis
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Author : Diwas Thapa
language : en
Publisher:
Release Date : 2023
Uncovering Temporal Dynamics In Traffic Safety Application Of Duration Based Models For Diagnostic And Predictive Analysis written by Diwas Thapa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with categories.
This research consists of four studies aimed at enhancing traffic safety. These studies employ innovative approaches and model frameworks based on duration models. The first study focuses on Work Zone Intrusion Alert Systems (WZIAS) and explores their component layout and impact on work zone safety. By analyzing the duration between work zone intrusion and crashes, this study identifies critical factors contributing to work zone crashes when WZIAS are in use. The study concludes by offering recommendations to optimize WZIAS effectiveness, including potential adjustments to existing work zone guidelines. The second study addresses the limitations of duration models in handling time-varying factors and their inability to support real-time predictive modeling. It introduces a novel duration-based model framework capable of accommodating dynamic covariates for proactive crash prediction modeling. This approach involves discretizing the time between crashes into forecasting epochs. The study explores various sampling methods to address computational challenges arising from increased data size due to forecasting epochs. A 25% epoch-level sample is found effective for computational efficiency without sacrificing accuracy. The third study extends the duration-based crash prediction framework, to develop a novel approach for predicting crash and severity simultaneously. The study further seeks to strike a balance between model performance and estimation time. Findings suggest that a 15% sample drawn at the epoch level provides an efficient compromise. Stability analysis of predictor variables sheds light on their reliability across different samples. Variables such as Time of day (Early afternoon), Weather condition, Lighting condition (Daytime), Illumination, and Volume require larger samples for more accurate coefficient estimation. Conversely, Time of day (Early morning, Late morning, Late afternoon), Lighting condition (Dark lighted), Terrain, Land use, Number of lanes, and Speed converge towards true estimates with small incremental increases in sample size. The fourth study employs the duration-based proactive crash prediction framework to showcase its versatility and identify the predictors of speeding events in work zones. The model's validity is tested, with higher accuracy observed for speeding events occurring with shorter durations between consecutive occurrences. The study demonstrates how the framework can help transportation agencies identify high-risk highway segments and implement safety measures proactively.
Road Traffic
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Author : Sophie E. Paterson
language : en
Publisher:
Release Date : 2009
Road Traffic written by Sophie E. Paterson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Automobile driving categories.
Road traffic represents a significant burden in the developing world and will continue to become more prominent without an effective response to the myriad problems it presents. This book provides a discussion on effective measures in safety, modelling and the impacts of road traffic on society.
Traffic And Granular Flow 13
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Author : Mohcine Chraibi
language : en
Publisher: Springer
Release Date : 2014-12-05
Traffic And Granular Flow 13 written by Mohcine Chraibi and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-12-05 with Computers categories.
This book continues the biannual series of conference proceedings, which has become a classical reference resource in traffic and granular research alike, and addresses the latest developments at the intersection of physics, engineering and computational science. These involve complex systems, in which multiple simple agents, be they vehicles or particles, give rise to surprising and fascinating phenomena. The contributions collected in these proceedings cover several research fields, all of which deal with transport. Topics include highway, pedestrian and internet traffic; granular matter; biological transport; transport networks; data acquisition; data analysis and technological applications. Different perspectives, i.e., modeling, simulations, experiments, and phenomenological observations are considered.
Traffic Flow Dynamics
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Author : Martin Treiber
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-10-10
Traffic Flow Dynamics written by Martin Treiber and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-10-10 with Science categories.
This textbook provides a comprehensive and instructive coverage of vehicular traffic flow dynamics and modeling. It makes this fascinating interdisciplinary topic, which to date was only documented in parts by specialized monographs, accessible to a broad readership. Numerous figures and problems with solutions help the reader to quickly understand and practice the presented concepts. This book is targeted at students of physics and traffic engineering and, more generally, also at students and professionals in computer science, mathematics, and interdisciplinary topics. It also offers material for project work in programming and simulation at college and university level. The main part, after presenting different categories of traffic data, is devoted to a mathematical description of the dynamics of traffic flow, covering macroscopic models which describe traffic in terms of density, as well as microscopic many-particle models in which each particle corresponds to a vehicle and its driver. Focus chapters on traffic instabilities and model calibration/validation present these topics in a novel and systematic way. Finally, the theoretical framework is shown at work in selected applications such as traffic-state and travel-time estimation, intelligent transportation systems, traffic operations management, and a detailed physics-based model for fuel consumption and emissions.
Passenger Safety And Convenience Systems
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Author : Ronald K Jurgen
language : en
Publisher: SAE International
Release Date : 2000-11-01
Passenger Safety And Convenience Systems written by Ronald K Jurgen and has been published by SAE International this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-11-01 with Technology & Engineering categories.
Passenger Safety and Convenience Systems is made up of 61 technical papers and articles written in the last decade covering a variety of electronic systems for driver and passenger safety and convenience. Many papers in this book could arguably be considered in both categories because they provide the driver/passenger with multiple functions of safety and convenience. Some examples include keyless entry, security systems, night vision, and more. This book concludes with a chapter on Future Development in Electronically Controlled Body and Safety Systems.