An Integrated Contraflow Strategy for Multimodal Evacuation. (12th May 2014)

• Record Type: Journal Article
• Authors: Hua, Jingyi; Ren, Gang; Cheng, Yang; Ran, Bin
• Other Names: Puebla Hector Academic Editor.
• Is Part Of: Mathematical problems in engineering. Volume 2014(2014)
• Publication Date: 2014-05-12
• Subjects: Engineering mathematics -- Periodicals; 510.2462
• DOI: 10.1155/2014/159473
• Languages: English
• ISSNs: 1024-123X

Abstract

Abstract : To improve the efficiency of multimodal evacuation, a network aggregation method and an integrated contraflow strategy are proposed in this paper. The network aggregation method indicates the uncertain evacuation demand on the arterial subnetwork and balances accuracy and efficiency by refining the local road subnetworks. The integrated contraflow strategy contains three arterial configurations: noncontraflow to shorten the strategy setup time, full-lane contraflow to maximize the evacuation network capacity, and bus contraflow to realize the transit cycle operation. The application of this strategy takes two steps to provide transit priority during evacuation: solve the transit-based evacuation problem with a minimum-cost flow model, firstly, and then address the auto-based evacuation problem with a bilevel network flow model. The numerical results from optimizing an evacuation network for a super typhoon justify the validness and usefulness of the network aggregation method and the integrated contraflow strategy.