Breakdown in Traffic Networks

2017-05-26 Technology & Engineering

Author : Boris S. Kerner
Release : 2017-05-26
Genre : Technology & Engineering
Kind : eBook
Book Rating : 733/5 ( reviews)

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Book Synopsis Breakdown in Traffic Networks by : Boris S. Kerner

Download or read book Breakdown in Traffic Networks written by Boris S. Kerner. This book was released on 2017-05-26. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a detailed investigation of breakdowns in traffic and transportation networks. It shows empirically that transitions from free flow to so-called synchronized flow, initiated by local disturbances at network bottlenecks, display a nucleation-type behavior: while small disturbances in free flow decay, larger ones grow further and lead to breakdowns at the bottlenecks. Further, it discusses in detail the significance of this nucleation effect for traffic and transportation theories, and the consequences this has for future automatic driving, traffic control, dynamic traffic assignment, and optimization in traffic and transportation networks. Starting from a large volume of field traffic data collected from various sources obtained solely through measurements in real world traffic, the author develops his insights, with an emphasis less on reviewing existing methodologies, models and theories, and more on providing a detailed analysis of empirical traffic data and drawing consequences regarding the minimum requirements for any traffic and transportation theories to be valid. The book - proves the empirical nucleation nature of traffic breakdown in networks - discusses the origin of the failure of classical traffic and transportation theories - shows that the three-phase theory is incommensurable with the classical traffic theories, and - explains why current state-of-the art dynamic traffic assignments tend to provoke heavy traffic congestion, making it a valuable reference resource for a wide audience of scientists and postgraduate students interested in the fundamental understanding of empirical traffic phenomena and related data-driven phenomenology, as well as for practitioners working in the fields of traffic and transportation engineering.

Performance of Traffic Networks

2006 Traffic flow

Author : Collins Makoriwa
Release : 2006
Genre : Traffic flow
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis Performance of Traffic Networks by : Collins Makoriwa

Download or read book Performance of Traffic Networks written by Collins Makoriwa. This book was released on 2006. Available in PDF, EPUB and Kindle. Book excerpt:

Urban Traffic Networks

2012-12-06 Business & Economics

Author : Nathan H. Gartner
Release : 2012-12-06
Genre : Business & Economics
Kind : eBook
Book Rating : 419/5 ( reviews)

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Book Synopsis Urban Traffic Networks by : Nathan H. Gartner

Download or read book Urban Traffic Networks written by Nathan H. Gartner. This book was released on 2012-12-06. Available in PDF, EPUB and Kindle. Book excerpt: The problems of urban traffic in the industrially developed countries have been at the top of the priority list for a long time. While making a critical contribution to the economic well being of those countries, transportation systems in general and highway traffic in particular, also have detrimental effects which are evident in excessive congestion, high rates of accidents and severe pollution problems. Scientists from different disciplines have played an important role in the development and refinement of the tools needed for the planning, analysis, and control of urban traffic networks. In the past several years, there were particularly rapid advances in two areas that affect urban traffic: 1. Modeling of traffic flows in urban networks and the prediction of the resulting equilibrium conditions; 2. Technology for communication with the driver and the ability to guide him, by providing him with useful, relevant and updated information, to his desired destination.

Introduction to Modern Traffic Flow Theory and Control

2009-09-16 Technology & Engineering

Author : Boris S. Kerner
Release : 2009-09-16
Genre : Technology & Engineering
Kind : eBook
Book Rating : 052/5 ( reviews)

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Book Synopsis Introduction to Modern Traffic Flow Theory and Control by : Boris S. Kerner

Download or read book Introduction to Modern Traffic Flow Theory and Control written by Boris S. Kerner. This book was released on 2009-09-16. Available in PDF, EPUB and Kindle. Book excerpt: 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”.

Data-Driven Traffic Engineering

2020-10-23 Transportation

Author : Hubert Rehborn
Release : 2020-10-23
Genre : Transportation
Kind : eBook
Book Rating : 392/5 ( reviews)

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Book Synopsis Data-Driven Traffic Engineering by : Hubert Rehborn

Download or read book Data-Driven Traffic Engineering written by Hubert Rehborn. This book was released on 2020-10-23. Available in PDF, EPUB and Kindle. Book excerpt: Data-Driven Traffic Engineering: Understanding of Traffic and Applications Based on Three-Phase Traffic Theory shifts the current focus from using modeling and simulation data for traffic measurements to the use of actual data. The book uses real-world, empirically-derived data from a large fleet of connected vehicles, local observations and aerial observation to shed light on key traffic phenomena. Readers will learn how to develop an understanding of the empirical features of vehicular traffic networks and how to consider these features in emerging, intelligent transport systems. Topics cover congestion patterns, fuel consumption, the influence of weather, and much more. This book offers a unique, data-driven analysis of vehicular traffic in traffic networks, also considering how to apply data-driven insights to the intelligent transport systems of the future. - Provides an empirically-driven analysis of traffic measurements/congestion based on real-world data collected from a global fleet of vehicles - Applies Kerner's three-phase traffic theory to empirical data - Offers a critical scientific understanding of the underlying concerns of traffic control in automated driving and intelligent transport systems

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