基于仿真的标志控制交叉口次路通行能力

Secondary Road Traffic Capacity of Sign Controlled Intersection Based on Simulation

交叉口是道路网系统中"矛盾的主要聚集地,问题的主要发生源",其设计、布局等是以预测的交通量为依据,因此其通行能力是路网交通管理、交通组织及控制方式确定或方案选择的依据.以间隙接受理论为基础,运用系统仿真的方法,在标志控制交叉口主车流服从M3分布的情况下,对次路通行能力进行研究.通过在随机数表中连续选取随机数,获得基础数据;选取适当参数,计算得出参考公式;通过统计换算和整理确定了普通标志控制交叉口次路直行、左转车道的通行能力.

Intersection is the place of contradictory mainly gathering and the main source of the problem occuring in road network system. The design and layout of the intersection are based on the traffic capacity of the intersection and the prediction of traffic volumes. Therefore, the traffic capacity of the intersection is the basis of the road network traffic management, organization and control. Based on the gap acceptance theory,the traffic capacity of the secondary road was studied considering that the main traffic flow in the intersection of the flag is controlled by the M3 distribution. Through continuous selection of random numbers in the table, basic data was obtained, appropriate parameters were selected to calculate the reference formula and the traffic capacities of the straight and left turn lanes were determined.