A network flow model for lane-based evacuation routing

被引:401
作者
Cova, TJ [1 ]
Johnson, JP [1 ]
机构
[1] Univ Utah, Dept Geog, Ctr Nat & Technol Hazards, Salt Lake City, UT 84112 USA
关键词
emergency management; evacuation routing; network flow modeling; optimization modeling;
D O I
10.1016/S0965-8564(03)00007-7
中图分类号
F [经济];
学科分类号
02 ;
摘要
Most traffic delays in regional evacuations occur at intersections. Lane-based routing is one strategy for reducing these delays. This paper presents a network flow model for identifying optimal lane-based evacuation routing plans in a complex road network. The model is an integer extension of the minimum-cost flow problem. It can be used to generate routing plans that trade total vehicle travel-distance against merging, while preventing traffic crossing-conflicts at intersections. A mixed-integer programming solver is used to derive optimal routing plans for a sample network. Manual capacity analysis and microscopic traffic simulation are used to compare the relative efficiency of the plans. An application is presented for Salt Lake City, Utah. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:579 / 604
页数:26
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