基于PARAMICS的公交专用道时分复用方法研究及优化

公交专用道有效实现公交优先的同时加深了社会车辆与道路资源间的矛盾,保证公交优先的车道复用方法可以较好的解决这一问题.为了改善目前的公交专用道复用方法,研究了一种能够定量计算社会车辆借道时间的公交专用道时分复用方法.在PARAMICS交通仿真软件中建立以特定路段为中心的微观交通路网模型,采用C语言扩展PARAMICS功能对实验路段进行仿真实验,并通过调整时分复用方法中各关键参数的取值,对该方法进行优化设计.最后验证优化后的公交专用道时分复用方法能够保证公交优先的前提下提高社会车辆的平均行驶速度、降低路段的车流密度、减少交叉口延误和道路拥堵时间.

Optimization of time division multiplexing for dedicated bus lanes based on PARAMICS

Although the buses receive priority effectively by means of dedicated bus lanes(DBL),the contradiction between social vehicles and road resources becomes still more acute.The lanes multiplexing methods proposed in recent years can solve this contradiction well while guaranteeing bus priority.According to the several major problems in DBL multiplexing methods and to make full use of bus lanes resources,a novel approach of DBL time division multiplexing is put forward,which can quantitatively calculate borrowing time of general vehicles.In PARAMICS,the microscopic simulation model of traffic network is established and the function of PARAMICS is expanded by C language to simulate the experimental sections.Through adjusting value of key parameters each time in the simulation,the DBL multiplexing approach has been optimized.Finally,the outcome of simulation verifies the optimized DBL multiplexing approach could not only ensure bus priority but also accelerate traffic speed,lower traffic density and shorten delay time of downstream intersection.