Evaluating Regional Contra-Flow and Phased Evacuation Strategies for Texas Using a Large-Scale Dynamic Traffic Simulation and Assignment Approach

Chiu Yi-Chang, Zheng Hong, Villalobos Jorge A, Peacock Walter and Henk Russell
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Chiu Yi-Chang: University of Arizona
Zheng Hong: University of Arizona
Villalobos Jorge A: University of Arizona
Peacock Walter: Texas A&M University
Henk Russell: Texas Transportation Institute

Journal of Homeland Security and Emergency Management, 2008, vol. 5, issue 1, 29

Abstract: After Hurricane Rita, the need for systematic and quantitative assessments of evacuation planning and operations strategies was recognized. Both contra-flow operation and phased evacuation were put into rigorous analysis through a large-scale regional traffic simulation modeling approach. After extensive data preparation and model developments, the Central Texas Evacuation network (CTE) in Dynamic Urban Systems in Transportation (DynusT) was created. The analysis results are presented and elaborated through relevant measures of effectiveness as well as innovative visualization techniques in this paper. The results show that the contra-flow strategy yields considerable improvements in all evacuation corridors in spite of several hot spots requiring further mitigation. The phased evacuation strategy in conjunction with the contra-flow strategy brings forth further improvements, particularly for the coastal high risk zones.

Keywords: contra-flow; phased evacuation; traffic simulation; dynamic traffic assignment; mass evacuation; Hurricane Rita (search for similar items in EconPapers)
Date: 2008
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DOI: 10.2202/1547-7355.1409

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