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Title of Journal: Nat Hazards

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Abbravation: Natural Hazards

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Springer Netherlands

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DOI

10.1016/0261-2194(87)90023-8

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1573-0840

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Simultaneous optimization of evacuation route and

Authors: Zhengfeng Huang Pengjun Zheng Gang Ren Yang Cheng Bin Ran
Publish Date: 2016/04/30
Volume: 83, Issue: 1, Pages: 575-599
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Abstract

Linklevel congestion such as link spillback and long intersection queues should be avoided during emergency evacuation The reason is that these local traffic incidents can cause traffic safety risks and hinder evacuation tasks To determine reliable routes and departure times for the whole evacuation we establish the linkcongestion mitigationbased dynamic evacuation route planning LCMDERP model The distinct difference with the typical DERP model lies in the objective composition The system cost objective in our model consists of not only total evacuation time but also external congestion cost The penalization for link spillback and long intersection queues is used to represent external congestion cost An improved cell transmission structure composed of tail cell and head cell and approach cell is proposed to simulate dynamic traffic flow Specifically tail cell and head cell can detect the information of link spillback and long intersection queue separately This function enables the representation of external congestion cost expressed by multiplying linklevel congestion vehicles with penalty parameter A method of successive average including a calculation of the local path marginal cost is used to solve the model We applied the LCMDERP model on a road network around Olympic Stadium in Nanjing China to test its effectiveness in the aspect of linkcongestion control Compared with the typical DERP model our method can improve system cost especially in the high demand range wherein the reduced external congestion cost is larger than this reduced system costThis research was sponsored by National Natural Science Foundation of China Nos 51408321 51408322 and 51408190 and Zhejiang Social Science Planning Program No 16NDJC015Z and Zhejiang Provincial Natural Science Foundation Nos Y15E080035 and Q15G020011 The assistance provided by Wisconsin Traffic Operations and Safety Laboratory is greatly appreciated

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