Traffic control and optimization in road networks

Dr. Yongxiang Xia (The Australian National University)

DATE: 2009-09-04
TIME: 11:00:00 - 12:00:00
LOCATION: RSISE Seminar Room, ground floor, building 115, cnr. North and Daley Roads, ANU

ABSTRACT:
We study the performance of two traffic control strategies for vehicular traffic in road networks. In the city centre, signal lights are widely used to control the traffic; whereas in rural suburbs, intersections work in the self-organizing manner by drivers. By using cellular automaton model, the road network is modelled by a square lattice, in which road segments and intersections are equally treated. We propose different rules for different control strategies. Then different traffic conditions are studied and two control strategies are compared. The results indicate that no matter what control strategy is used, the traffic flow shows three phases with different car density.

In order to improve the traffic performance, two methods can be used. One is to design better strategies to control the traffic lights, and the other is to build new roads. I will introduce several research issues in these two directions.

BIO:
Dr. Yongxiang Xia received his Bachelor and Ph.D. degrees in Electronic Engineering in 1998 and 2004, respectively, both from Tsinghua University , China . From 2004 to 2006 he was with the Department of Electronic and Information Engineering, Hong Kong Polytechnic University , as a Postdoctoral Fellow. Currently, he is a Research Fellow with the Department of Information Engineering, Research School of Information Sciences and Engineering, Australian National University . Dr. Xia’s current research focuses on complex network science and its applications to traffic networks.

MEDIA:
roadtraffic_seminar4Sep09.pdf
video.html

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