Title :
A model for determining optimal variable message sign locations
Author :
Gan, Hongcheng ; He, Shengxue ; Dong, June
Author_Institution :
Center for Supernetwork Res. (CSuRe), Univ. of Shanghai for Sci. & Technol., Shanghai, China
Abstract :
Variable message signs (VMS), a component of intelligent transportation system (ITS) technologies, have been more and more widely applied in urban traffic management. A new model to determine optimal locations for VMS has been proposed in this paper. First, the optimal VMS location problem is formulated as a bi-level programming problem which takes into account the interaction between VMS and network-wide traffic flow distribution. The upper level model of the bi-level problem aims at maximizing the benefits of the VMS system regarding the amount of information provided by VMS. The lower level model is a stochastic user equilibrium traffic assignment model. Second, the solution algorithm for the bi-level model is presented. Next, the validity of the new model is verified by numerical analyses through a case study. Research results of this paper provide a technical tool to make plausible decisions regarding optimal VMS location plans.
Keywords :
numerical analysis; stochastic processes; traffic engineering computing; bilevel programming problem; intelligent transportation system technologies; network-wide traffic flow distribution; numerical analyses; optimal variable message sign locations; stochastic user equilibrium traffic assignment model; technical tool; urban traffic management; Driver circuits; Impedance; Mathematical model; Numerical models; Programming; Stochastic processes; Transportation; bi-level programming problem; interactive optimization algorithm; optimal locations; stochastic traffic assignment; variable message signs;
Conference_Titel :
Business Management and Electronic Information (BMEI), 2011 International Conference on
Conference_Location :
Guangzhou
Print_ISBN :
978-1-61284-108-3
DOI :
10.1109/ICBMEI.2011.5914420
