出行前交通信息发布对城市路网的交通影响分析

提出了一种出行前交通信息提供下进行交通影响分析的方法。利用随机路径选择模型来描述出行者对出行信息的反应,根据是否接收交通信息将驾驶员分为两类:接收者将在路径选择时避开拥堵路段,而非接收者将根据对路网的认知进行随机路径选择,并给出这两种出行行为共存下的交通分配方法。以广州市中心商务区珠江新城为例分析了信息发布对路网的改善作用,并讨论了最佳发布策略。

Traffic Impact Analysis of Pre-trip Traffic Information on Urban Network

A method for traffic impact analysis with pre-trip traffic information is presented, in which travellers'reactions to the traffic information are described by stochastic route choice models. Travellers are divided into two groups according to the information provision: the travellers who receive information will avoid the congested region when they making decisions, otherwise they follow the logit style stochastic route choice behavior. Traffic assignment algorithm for such mixed behaviours is proposed.The central business district, the Pearl River New Town in Guangzhou, China, is chosen to evaluate the impacts of traffic information.It is found that the inappropriate information has negative impact on road network, and more information does not guarantee improvements of the network. A discussion on the optimization of traffic information providing is presented.