Optimal Onoff Control of VMS for Highway Route Guidance

Abstract

Abstract: The problem of designing route guidance strategies for highway networks via onroute recommendation of variable message signs (VMS) was considered. A generic problem formulation was presented in the format of an optimal onoff control problem whose control action is the switching of VMS. The cell transmission model was then employed to perform network dynamics and a genetic algorithm-based problem solving approach was given. The simulation shows that the strategy with optimal VMS control trajectories can make better use of the highway capability and reduce regional congestion, especially in case the traffic network has unbalanced demand. The total time spent (TTS) of the network can be improved up to 32.39%.

Key words: variable message signs, route guidance, optimal onoff control, cell transmission model

CLC Number:

U491
O232

SUN Wei-Li-1, LI Ping-1, WANG Hui-1, LIU Hong-2. Optimal Onoff Control of VMS for Highway Route Guidance[J]. Journal of Shanghai Jiaotong University, 2011, 45(08): 1246-1250.

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