快速路出口通行能力的可靠性仿真研究

随着中国经济的迅速发展，对交通的需求变得越来越迫切，各大城市都建立了快速路系统。快速路上没有交通信号灯，车辆可以高速行驶，但是在快速路的出口，由于右转车等待向右并线，使快速路上的车辆不能及时驶出，甚至导致整条道路的严重拥堵。出口成了影响快速路通行能力可靠性的瓶颈，无法有效地发挥快速路迅捷、通畅的作用。依据交通需求满意可靠性观点，利用仿真数据，研究在车辆到达服从泊松分布，不同到达率、右转率、让行率条件下，由右转车向右并线引起的道路通行能力可靠性变化，给出分析结果和一些有价值的结论。

Simulation Study on the Road Capacity Reliability of Thruway with Exit

With the development of our economy, transportation comes to be the lifeline of economy. A lot of expressways have been built in many megalopolises. Because on the expressway there is no traffic signal, vehicles could move fast at a high speed. However at the exit, because of the interruption that the right turn vehicle could not move to another lane to the right exit, the passage lane is jammed with a long queue behind the right turn vehicle. The exit becomes the bottleneck of the expressway. In this paper, with the simulation of the traffic flow at an intersection, the reliability of road capacity is analyzed under the conditions of different arrival rate, right turn rate and priority rate. The flow is supposed as Poisson arrival. Based on the simulation results, some valuable conclusions are given.