Traffic Flow Modelling To Improve Traffic State Prediction
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Traffic Flow Modelling To Improve Traffic State Prediction
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Author : Yuechuan Yin
language : en
Publisher:
Release Date : 2014
Traffic Flow Modelling To Improve Traffic State Prediction written by Yuechuan Yin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Traffic engineering categories.
In this research, the relationship between microscopic car-following models and macroscopic models has been explored and it was found that, based on the traditional assumption that traffic density is the reverse of space headway under steady-state homogeneous traffic conditions, most of the existing macroscopic speed-density relations can be derived from microscopic car-following models. The traditional assumption does not hold under non-homogeneous traffic and different macroscopic traffic models can be derived from different headway-density. The research also investigated the compatibility between the macroscopic and microscopic simulation. The microscopic simulation model, VISSIM, was calibrated and validated on an urban freeway. The VISSIM outputs were compared with the predicted traffic speed, density and flow from the second-order macroscopic model, METANET. Three levels of traffic demands and seven different time step lengths in macroscopic simulation were applied to evaluate the compatibility of the two models. It was concluded that, in macroscopic simulation, there exists an optimum time step length. Under moderate to heavy traffic demands, the predicted traffic states from the macroscopic simulation are consistent with the outputs from the microscopic simulation, and under stop-and-go traffic states, a significant difference exists between the two models. In addition, the impact of merging and weaving from freeway ramps on the performance of macroscopic simulation models was experimentally investigated. Several merging and weaving formulations in speed dynamics were evaluated and their contributions to the predicted traffic speed were quantitatively analyzed. Analysis of variances were carried out on the prediction errors from different models and it was concluded that, for the given formulation, the impact of merging and weaving terms on the prediction accuracy was not statistically significant, merging and weaving terms can be omitted in macroscopic simulation models. Finally, several improvements on the macroscopic simulation models were proposed. The improved models were applied to two freeways and compared with outputs from the original model, using both simulation data as well as field measured data from two freeways. It was concluded that the models with the proposed improvements have obviously better performance than the original model, especially in congested traffic conditions.
Fundamentals Of Traffic Simulation
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Author : Jaume Barceló
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-01-06
Fundamentals Of Traffic Simulation written by Jaume Barceló 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 2011-01-06 with Business & Economics categories.
The increasing power of computer technologies, the evolution of software en- neering and the advent of the intelligent transport systems has prompted traf c simulation to become one of the most used approaches for traf c analysis in s- port of the design and evaluation of traf c systems. The ability of traf c simulation to emulate the time variability of traf c phenomena makes it a unique tool for capturing the complexity of traf c systems. In recent years, traf c simulation – and namely microscopic traf c simulation – has moved from the academic to the professional world. A wide variety of traf- c simulation software is currently available on the market and it is utilized by thousands of users, consultants, researchers and public agencies. Microscopic traf c simulation based on the emulation of traf c ows from the dynamics of individual vehicles is becoming one the most attractive approaches. However, traf c simulation still lacks a uni ed treatment. Dozens of papers on theory and applications are published in scienti c journals every year. A search of simulation-related papers and workshops through the proceedings of the last annual TRB meetings would support this assertion, as would a review of the minutes from speci cally dedicated meetings such as the International Symposiums on Traf c Simulation (Yokohama, 2002; Lausanne, 2006; Brisbane, 2008) or the International Workshops on Traf c Modeling and Simulation (Tucson, 2001; Barcelona, 2003; Sedona, 2005; Graz 2008). Yet, the only comprehensive treatment of the subject to be found so far is in the user’s manuals of various software products.
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.
An Introduction To Traffic Flow Theory
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Author : Lily Elefteriadou
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-19
An Introduction To Traffic Flow Theory written by Lily Elefteriadou 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 2013-11-19 with Mathematics categories.
This text provides a comprehensive and concise treatment of the topic of traffic flow theory and includes several topics relevant to today’s highway transportation system. It provides the fundamental principles of traffic flow theory as well as applications of those principles for evaluating specific types of facilities (freeways, intersections, etc.). Newer concepts of Intelligent transportation systems (ITS) and their potential impact on traffic flow are discussed. State-of-the-art in traffic flow research and microscopic traffic analysis and traffic simulation have significantly advanced and are also discussed in this text. Real world examples and useful problem sets complement each chapter. This textbook is meant for use in advanced undergraduate/graduate level courses in traffic flow theory with prerequisites including two semesters of calculus, statistics, and an introductory course in transportation. The text would also be of interest to transportation professionals as a refresher in traffic flow theory, or as a reference. Students and engineers of diverse backgrounds will find this text accessible and applicable to today’s traffic issues.
Nonlinear Control Under Nonconstant Delays
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Author : Nikolaos Bekiaris-Liberis
language : en
Publisher: SIAM
Release Date : 2013-09-25
Nonlinear Control Under Nonconstant Delays written by Nikolaos Bekiaris-Liberis and has been published by SIAM this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09-25 with Mathematics categories.
The authors have developed a methodology for control of nonlinear systems in the presence of long delays, with large and rapid variation in the actuation or sensing path, or in the presence of long delays affecting the internal state of a system. In addition to control synthesis, they introduce tools to quantify the performance and the robustness properties of the designs provided in the book. The book is based on the concept of predictor feedback and infinite-dimensional backstepping transformation for linear systems and the authors guide the reader from the basic ideas of the concept?with constant delays only on the input?all the way through to nonlinear systems with state-dependent delays on the input as well as on system states. Readers will find the book useful because the authors provide elegant and systematic treatments of long-standing problems in delay systems, such as systems with state-dependent delays that arise in many applications. In addition, the authors give all control designs by explicit formulae, making the book especially useful for engineers who have faced delay-related challenges and are concerned with actual implementations and they accompany all control designs with Lyapunov-based analysis for establishing stability and performance guarantees.
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.
Proceedings Of International Conference On Next Generation Communication And Computing
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Author : Devendra Kumar Sharma
language : en
Publisher: Springer Nature
Release Date : 2025-07-15
Proceedings Of International Conference On Next Generation Communication And Computing written by Devendra Kumar Sharma and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-07-15 with Technology & Engineering categories.
This book presents high-quality papers from the International Conference on Next-Generation Communication and Computing (NGCCOM 2024). It discusses the latest technological trends and advances in major research areas such as 5G and Beyond, Internet of Things (IoT), wireless communications, optical communication, signal processing, image processing, big data, cloud computing, intelligent computing, artificial intelligence and sensor network applications. This book includes the contributions of national and international scientists, researchers and engineers from both academia and the industry. The contents of this book will be useful to researchers, professionals and students alike.
International Conference On Applied Technologies
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Author : Miguel Botto-Tobar
language : en
Publisher: Springer Nature
Release Date : 2025-05-13
International Conference On Applied Technologies written by Miguel Botto-Tobar and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-05-13 with Computers categories.
This book constitutes the refereed proceedings of the 6th International Conference on International Conference on Applied Technologies, ICAT 2024, held in Samborondón, Ecuador, during November 20–22, 2024. The 25 full papers included in this book were carefully reviewed and selected from 95 submissions. They were organized in topical sections as follows: Computing; E-learning; Electronics; Technology Trends; Intelligent Systems; Machine Vision; and AT for Engineering Applications.
Connected Vehicles Traffic Prediction
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Author : Quan Shi
language : en
Publisher: Springer Nature
Release Date : 2025-04-29
Connected Vehicles Traffic Prediction written by Quan Shi and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-04-29 with Technology & Engineering categories.
This book delves into the problems and challenges faced in achieving improved performance in connected vehicles traffic flow prediction in intelligent connected transportation systems and provides an in-depth analysis of spatial-temporal feature extraction, global local spatial feature extraction, and fusion of external factors. The book is divided into ten chapters, and the introductory section presents the history of the development of artificial intelligence and graph neural networks in the context of connected vehicles, related work on prediction of connected traffic, and preliminary knowledge. Chapter 2 to 9 present eight prediction methods in the context of connected traffic, respectively. Each section includes an introduction to the problem definition, model architecture, experimental setup, and discussion of results, as well as references. The last section summarizes the contributions of the book and future challenges.
Applied Mathematics Modeling And Computer Simulation
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Author : C.-H. Chen
language : en
Publisher: IOS Press
Release Date : 2022-02-25
Applied Mathematics Modeling And Computer Simulation written by C.-H. Chen and has been published by IOS Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-02-25 with Computers categories.
The pervasiveness of computers in every field of science, industry and everyday life has meant that applied mathematics, particularly in relation to modeling and simulation, has become ever more important in recent years. This book presents the proceedings of the 2021 International Conference on Applied Mathematics, Modeling and Computer Simulation (AMMCS 2021), hosted in Wuhan, China, and held as a virtual event from 13 to 14 November 2021. The aim of the conference is to foster the knowledge and understanding of recent advances across the broad fields of applied mathematics, modeling and computer simulation, and it provides an annual platform for scholars and researchers to communicate important recent developments in their areas of specialization to colleagues and other scientists in related disciplines. This year more than 150 participants were able to exchange knowledge and discuss recent developments via the conference. The book contains 115 peer-reviewed papers, selected from more than 250 submissions and ranging from the theoretical and conceptual to the strongly pragmatic and all addressing industrial best practice. Topics covered include mathematical modeling and applications, engineering applications and scientific computations, and the simulation of intelligent systems. Providing an overview of recent development and with a mix of practical experiences and enlightening ideas, the book will be of interest to researchers and practitioners everywhere.