School Seminars and Colloquia

Braess paradox under different traffic demand scenarios

Centre of Excellence for Mathematics and Statistics of Complex Systems Seminar

by Yongxiang Xia

Institution: Australian National University
Date: Fri 19th February 2010
Time: 3:15 PM
Location: Theatre 2, ICT Bldg ground floor, 111 Barry Street

Abstract: In a traffic network, The Braess paradox gives an example that more resource can lead to worse performance. Previous study on this topic mainly focuses on the worst case. In a practical traffic network, however, the traffic volume changes from time to time, i.e., the worst case is not always satisfied. Therefore, it is important to study the Braess paradox under different traffic demand scenarios, which motivates the research in this talk. Our result indicates that the Braess paradox can only happen within a range of traffic volume. Moreover, in a large network, the paradox can happen at different places with different traffic volume. We study the traffic with single source-destination pair and multiple S-D pairs, and find similar results.

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