Vissim和Corsim在城市道路微观仿真中的对比研究

对2种最为常见的微观仿真模型Vissim和Corsim在城市路网交通仿真中的性能进行对比评价。以上海市虹口区北外滩路网作为仿真对象,对路网和交通数据进行了收集,基于现实数据进行了仿真模拟,并选取编译简易度、平均控制延误以及断面交通量作为关键指标,运用敏感度分析的方法对2种模型的仿真性能进行对比。针对不同程度的拥挤度设置以及不同规模的交叉口,识别了2种仿真模型表现出的不同特点及其交通运行指标输出的差异性。该差异主要由模型的默认参数设置引起,包括驾驶行为,交通环境以及车辆类型的设置等。因此,研究人员应根据交叉口类型以及饱和程度等,来选择适当的仿真工具。

Comparative Study of Micro-simulation Performances for Urban Road Network between Vissim and Corsim

This study conducted a comparative analysis of two popular simulation models Vissim and Corsim,based on their simulation performances on an urban traffic network.The road network and field traffic data from North Bund,Hongkou District of Shanghai were collected and used as the simulation background and input.Three key indices,including software usability,average control delay and cross-sectional traffic volume,were selected for comparison,and a sensitivity analysis was conducted to compare the performances of both models on each index.Performance differences and particular advantages of each simulator were identified based on comparison analyses of simulations results with different levels of congestion and different scales of intersections.The main reason for performance differences was found to be the configuration of model parameters including driver behavior settings,traffic environment settings,vehicle types and others.Consequently,it is recommended that the appropriate tool should be chosen based on the intersection type and the saturation level of the simulation case.