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Empirical analysis of freeway traffic oscillation : its safety impact and evolution

Zheng, Zuduo (2011) Empirical analysis of freeway traffic oscillation : its safety impact and evolution. VDM Publishing House LTD, Germany.

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Abstract

Traffic oscillations are typical features of congested traffic flow that are characterized by recurring decelerations followed by accelerations. However, people have limited knowledge on this complex topic. In this research, 1) the impact of traffic oscillations on freeway crash occurrences has been measured using the matched case-control design. The results consistently reveal that oscillations have a more significant impact on freeway safety than the average traffic states. 2) Wavelet Transform has been adopted to locate oscillations' origins and measure their characteristics along their propagation paths using vehicle trajectory data. 3) Lane changing maneuver's impact on the immediate follower is measured and modeled. The knowledge and the new models generated from this study could provide better understanding on fundamentals of congested traffic; enable improvements to existing traffic control strategies and freeway crash countermeasures; and instigate people to develop new operational strategies with the objective of reducing the negative effects of oscillatory driving.

Impact and interest:

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ID Code: 41925
Item Type: Book
Additional URLs:
Keywords: Traffic oscillations, traffic congestion, freeway crash, matched case-control design, Wavelet Transform
ISBN: 9783639342796
Subjects: Australian and New Zealand Standard Research Classification > BUILT ENVIRONMENT AND DESIGN (120000) > URBAN AND REGIONAL PLANNING (120500) > Transport Planning (120506)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Urban Development
Copyright Owner: Copyright 2011 Zuduo Zheng
Deposited On: 08 Jun 2011 08:14
Last Modified: 08 Jun 2011 08:14

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