Chapter
Apr 26, 2012
Impacts of Freeway Traffic Congestion on En-Route Traveler's Diversion
Authors: Yao-Jan Wu [email protected], Mark E. Hallenbeck [email protected], and Yinhai Wang [email protected]Author Affiliations
Publication: ICCTP 2011: Towards Sustainable Transportation Systems
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.
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© 2011 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Department of Civil and Environmental Engineering, University of Virginia, Thornton Hall B228, 351 McCormick Road, PO Box 400742, Charlottesville, VA 22904.E-mail: [email protected]
Washington State Transportation Center (TRAC), University of Washington, Box 354802, University District Building, 1107 NE 45th Street, Suite 535, Seattle, WA98105-4631.E-mail: [email protected]
Department of Civil and Environmental Engineering, University of Washington, Seattle, WA 98195-2700.E-mail: [email protected]
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.