Impacts of freeway traffic congestion on en-route traveler's diversion

Yao Jan Wu, Mark E. Hallenbeck, Yinhai Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Traveler information delivered through variable message signs and other mobile devices has been proved beneficial for traffic network performance. However, travelers' en-route responses to real-time traffic conditions without such information are not well-understood and essential for integrated corridor management and strategic investment in Intelligent Transportation Systems (ITS) targeting congestion mitigation. In order to evaluate traveler's diversion and its impact, many studies have tried various approaches, such as survey study and traffic simulations. This paper describes a threshold-based method to replicate different scenarios using loop detector data on freeways and arterials. Unlike the traffic simulation approaches, the threshold-based method can quantitatively capture en-route travelers' real-time decision on diversion and the diversion's impact on the alternative route without the need for theoretical assumptions. By monitoring the freeway congestion level, the proposed method extracts three types of scenarios, normal congestion, worse-than-expect, and abrupt-traffic-change condition to investigate travelers' decisions on diversion. This method was applied to the City of Bellevue in WA, as an example and can be applicable to other cities.

Original languageEnglish (US)
Title of host publicationICCTP 2011
Subtitle of host publicationTowards Sustainable Transportation Systems - Proceedings of the 11th International Conference of Chinese Transportation Professionals
Pages4077-4090
Number of pages14
DOIs
StatePublished - Oct 4 2011
Externally publishedYes
Event11th International Conference of Chinese Transportation Professionals: Towards Sustainable Transportation Systems, ICCTP 2011 - Nanjing, China
Duration: Aug 14 2011Aug 17 2011

Publication series

NameICCTP 2011: Towards Sustainable Transportation Systems - Proceedings of the 11th International Conference of Chinese Transportation Professionals

Other

Other11th International Conference of Chinese Transportation Professionals: Towards Sustainable Transportation Systems, ICCTP 2011
CountryChina
CityNanjing
Period8/14/118/17/11

Keywords

  • Information management
  • Traffic congestion

ASJC Scopus subject areas

  • Transportation

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    Wu, Y. J., Hallenbeck, M. E., & Wang, Y. (2011). Impacts of freeway traffic congestion on en-route traveler's diversion. In ICCTP 2011: Towards Sustainable Transportation Systems - Proceedings of the 11th International Conference of Chinese Transportation Professionals (pp. 4077-4090). (ICCTP 2011: Towards Sustainable Transportation Systems - Proceedings of the 11th International Conference of Chinese Transportation Professionals). https://doi.org/10.1061/41186(421)407