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A Study on Providing Real-Time Route Guidance Information by Variable Massage Signs with Driver Behavior  

Lee, Chang-U (중앙대학교 도시공학과)
Jeong, Jin-Hyeok (중앙대학교 도시공학과)
Publication Information
Journal of Korean Society of Transportation / v.24, no.7, 2006 , pp. 65-79 More about this Journal
Abstract
The ATIS(Advance Traveler Information System), as one part of ITS, is a system aiming to disperse traffic volume on transportation networks by providing traffic information to transportation users on pre-trip and en-route trips. One of tools in ATIS is usage of VMS(Variable Message Signs). It provides to the drivers with direct information about state of processing direction. which is considered as the most effective method in ATIS. The purposes of providing VMS information are classified two categories. One is to provide simple information to drivers for their convenience. The other is to manage traffic demand to improve transportation network performance. However, for more effective and reliable VMS information, several strategies should be taken into account. The main VMS management strategy is "Traffic Diversion Strategy for minimum delay" when traffic congestion or incident are occurred. For effective operation. firstly. reasonable diversion traffic volume is determined by network traffic condition Secondly, it is necessary to make providing information strategy which reflects driver response behavior for controling diversion traffic volume. This paper focuses on the providing real-time route guidance information by VMS when congestion is occurred by the incidents. This sturdy estimates time-dependent system optimal diversion rate that inflects travel time and queue lengths using traffic flow simulation model on base Cellular Automata. In addition, route choice behavior models are developed using binary logit model for traffic information variable by traffic system controller. Finally, this study provides time-dependent VMS massage contents and degree of providing information in order to optimize the traffic flow.
Keywords
VMS; Traffic Diversion Strategy; Optimal Diversion Rate; Driver Behavior; Providing Information Strategy; Cellular Atomata Model;
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