道路施工区车辆延误分析与交通仿真研究

Delay Analysis of Road Work Zone By Traffic Simulation Technology

道路施工区使得车辆运行受到显著影响,车辆延误增加。针对道路施工区车辆延误展开研究并提出了分析施工区车辆延误的方法。与传统的延误分析方法不同,引入交通仿真技术分析计算施工区影响范围内的运行延误、排队延误、加减速延误与绕行延误。采用TSIS仿真软件可以模拟封闭车道施工、不改变交通流向、改变交通流向或交通分流等交通组织方案,并根据不同的交通组织方案,分别计算车辆途经施工区产生的附加延误以及最优分流比例。研究示例表明,运用经过标定验证之后的仿真模型能有效地对施工区延误进行定量分析。仿真表达交通信息的多样性和详实性,确保了施工区车辆延误分析的全面性和准确性。

Road construction exerts a great influence to traffic flow, which will result in delay through road work zone. For the additional delay related to road work zone,a new analysis method is presented, which is different from the traditional calculation of delay. Traffic simulation technology is introduced to calculate a series of delays of work zone which composed of operation delay, queuing delay, acceleration-deceleration delay and delay of bypass. The micro-simulation software, TSIS, can simulate different stra- tegies of traffic organization, such as closing one of the lanes, unchanging or changing the direction of the flow, and traffic diverging. By the output of TSIS, different kinds of delay and the optimal percent of traffic diverging can be calculated according to traffic management and control measures. The examples indicate that the calibrated and validated model can be used to simulate the road work zone correctly, and can output quantitative data for analysis of delay. The diversity and quantitative output of simulation ensure that the delay analysis of work zone is comprehensive and accurate.