基于仿真的公路收费站通行能力研究

Research on Capacity of Highway Toll Station Based on Simulation

通过对公路收费站交通流运行特征和分布特性的分析,建立了公路收费站通行能力的系统动力学仿真模型。模型考虑了不同车型服务时间分布的差异以及车辆选择排队队列的实际因素,可以对不同交通量和交通组成下公路收费站的通行能力以及车辆排队延误等服务水平指标进行仿真分析。研究表明,仿真模型较传统模型更贴近现实;大、中型车特别是大型车对收费口通行能力的影响要高于小汽车。但由于问题的复杂性,应综合考虑收费站类型、交通量和交通组成等因素,使用不同的车型折算系数来分析收费站的实际通行能力。

A model of system dynamic simulation of highway toll station capacity was developed based on traffic characteristics. The model could simulate the mean queue time, capacity of tollgate, and other operation indices of toll station. The results were gained under several scenarios divided by traffic volume and traffic composition. The results indicate that the heavy vehicles have more impact on capacity of tollgate, and that different conversion coefficients of heavy vehicles should be used to analyze the actual capacity of toll station by considering such factors as the type, traffic volume, and traffic composition.