基于Paramics的城市路网交通控制策略评价系统研究

Study on Traffic control Tactics Appraisal System for Urban Highway Network based on Paramics

提出了一种基于微观仿真平台Param ics构建交通控制策略效率评价系统的理论框架与实现方法,并在微观仿真系统中提出了一个两层面的模型来描述路网:拓扑层和仿真层。作为应用实例,选择广州市海珠区中山大学附近路网为研究对象,通过现场交通调查获得道路几何数据及主要路口的实时交通流量数据,在该路口现行的交通控制策略模式的基础上,针对该地区实际存在的交通问题提出了改进的控制策略方案,进而利用所建立的评价系统分别对现行方案及改进方案进行了效率评估,最终根据定量结果获得较优的控制策略方案。

A framework to evaluate traffic control strategies efficiency is proposed based on the microscopic traffic simulation software Paramics. In the framework, the road network is represented by a two - level model, the topological level and the simulation level, to clearly describe the directional and multigraph characteristic of the urban road network and to meet the need of microscopic traffic simulation. A case study in Haizhu District of Guangzhou City is presented by using the method proposing in this paper. The simulative model as well as the transportation demand is built up based on the field survey data of the road network. The active service traffic control strategies of the road network together with the several strategies which are proposed according to the actual traffic problem existing in the road network are added to the network respectively and their oerformance are evaluated. Bv comparing the influence of the different control strategies to the network traffic, the most suitable control strategy of the road network is picked out. Results of the cases show that, the traffic control strategy evaluating framework proposed in the paper is feasible and effective, and can be applied in the transportation engineering for control strategy＇ s choosing and improving.