高速公路混合收费站通行能力的仿真

Simulation of the traffic capacity of the composite toll station in highway

为了合理地分析到达流大小、流量组成及通道配置情况等因素对高速公路混合收费站实际通行能力的影响,得到某一到达流量特性下混合收费站MTC和ETC通道的最佳配置组合,借助VISSIM仿真系统,对不同到达流量、不同ETC交通流比率条件下高速公路混合收费站通行能力随通道总数和ETC通道所占比例的变化进行了仿真研究。仿真结果表明:饱和流状态下,混合收费站的通行能力随收费通道总数的增大而增大,随ETC通道比例的增大而增大;到达流量一定时,ETC通道的设置比例应与到达流中ETC交通流比率相协调,才能使得混合收费站满足通行需求。得到了不同到达流量时能满足通行需求的ETC交通流的最低比率和混合收费站通道的最佳配置组合,为混合收费站的车道设置提供了参考。

In order to obtain the best allocation of composite toll station＇ s MTC and ETC passage at a certain actual traffic flow＇s characteristics,the influence of actual traffic flow value, composition of traffic flow and allocation of the passage on highway composite toll station was reasonably analyzed.Based on VISSIM simulation system,simulating study of the traffic capacity of the highway composite toll station under the change of total passage number and the ratio of ETC passage was carried out. The simulating study result showed that the traffic capacity of the highway composite toll station increased with the increase of the total passage number and the ratio of ETC passage. While actual traffic flow was a certain value, the highway composite toll station could meet requirements of the traffic capacity only when setting ration of ETC passage was coordinated with the ratio of ETC traffic flow in actual traffic flow. The best allocation of the composite toll station and the lowest ratio of ETC traffic flow which could meet requirements of the traffic capacity were suggested when the actual traffic flow was under different conditions of simulation.Thus,some reference was provided for lane setting in the composite toll station.