城市交通仿真中的延误计算模型对比分析

Contrastive Analysis of Delay Determined Models in Urban Traffic Simulation

论述了三种城市交通仿真(HCM2000、CORSIM软件、VISSIM软件)中的延误计算模型,在不同的交通流状态下,应用此三种延误计算模型进行了单点固定控制交叉口控制周期延误的仿真计算,并采用典型的美国城市交叉口实例进行了对比分析,得出以下结论:在交叉口接近饱和状态的情况下,HCM2000的延误计算模型得到的周期延误最小,在过饱和的情况下,HCM2000计算得到的周期延误最大。

Three delay determined models （in HCM2000, CORSIM and VISSIM, respectively） in urban traffic simulation were discussed. According to different traffic flow conditions, these three models were applied to the simulative calculation of cycle delay for fixed-time signalized intersection. In the case study, raw data of an USA intersection was used to the contrastive analysis of these three models, and several conclusions were drawn： in the condition when the intersection is near saturation, simulative cycle delay of HCM2000 model is smaller than that of any other two; While the intersection is over saturation, simulative cycle delay of HCM2000 model is the largest.