American Society of Civil Engineers


Simulation and Analysis of Emergency Routing Planning Based on Vulnerability Identification of Urban Transportation Network


by Shi An, (School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, 150090, China), Na Cui, (School of Management, Harbin Institute of Technology, Harbin 150001, China), Jian Wang, (School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, 150090, China), and Hang Yu, (School of Management, Harbin Institute of Technology, Harbin 150001, China)
Section: Transportation Operations and Safety, pp. 1188-1205, (doi:  http://dx.doi.org/10.1061/41167(398)114)

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Document type: Conference Proceeding Paper
Part of: Transportation and Development Institute Congress 2011: Integrated Transportation and Development for a Better Tomorrow
Abstract: In this study, link vulnerability index was derived based on a given set of traffic condition and availability of alternate paths when a road link was damaged. The identification results were considered as the basis of traffic assignment. With the purpose of decreasing the system disruption risks, a modified System Optimal (SO) traffic assignment model was presented. The evacuation situations under the conditions of classical and modified SO traffic assignment modes were simulated and compared. The results showed that although the modified traffic assignment mode could lead to an increase in the evacuation network clearance time and average travel time, it could make the system disruption risk decrease about 20%, and the results also provided a useful reference for the urban emergency planning department when making emergency routing strategies.


ASCE Subject Headings:
Emergency management
Routing
Simulation
Traffic assignment
Transportation networks
Urban areas