基于Vissim的高速公路隧道限速分析

Analysis of Highway Tunnel Speed Limit Based on Vissim

以确保隧道交通安全前提下的最佳通行效率作为限速的依据,分析了驾驶人通过隧道的驾驶行为过程,标定了关键的驾驶行为参数。基于Vissim仿真软件,建立了某高速公路隧道及出入口的交通仿真模型,观察不同车流量和车速下,车辆的运行状态。在满足高峰流量的基础上,选择最优车流量下的车速,并根据高速公路圆曲线半径与超高的设计对应要求,通过交通仿真验证了高速公路隧道限速值的合理性。

To ensure that the best traffic efficiency as the basis of speed limit under the premise of tun-nel traffic safety, the process of the driving behavior of drivers through the tunnel was analyzed, and thekey parameters were calibrated. A traffic simulation model of a highway tunnel and its passageway wasestablished based on Vissim simulation software. Under the different traffic volume and speed, the run-ning state of the vehicle was observed. On the basis of satisfying peak traffic volume, the speed underthe optimal traffic volume was selected, and according to the corresponding requirements of highway＇scurve radius and design of ultra-highway, the reasonableness of the highway tunnel speed limit valuewas verified by traffic simulation.