基于元胞传输模型的交通事件消散建模

介绍了元胞传输模型(CTM)的基本原理,并建立了交通事件消散时间的元胞传输模型。分析了上海市城市某段快速路交通事件发生位置处拥挤波的产生与消散,并对此问题用元胞传输模型建模并进行仿真计算。仿真结果表明,事件发生的上游形成拥挤区并慢慢向上游传递;事件清除后,拥挤波的消散较慢并会蔓延较长的距离,其消散也需要较长的时间。因此,有效的交通管理对缓解交通拥堵,减少交通延误有着重要的意义。

Modeling of the Traffic Incident Dissipation Based on Cell Transmission Model

The fundamental principle of the cell transmission model is proposed and the model of the traffic incident dissipation based on CTM is put forward.The creation and dissipation of jam wave at traffic allident area on some highway of Shanghai is analyzed,and simulative calculation on this problem iscamried out based on the CTM.The simulative results show that the jam area near of the incident moves upstream,and it will take a long time when the traffic return to the original situation.The jam will move downstream after the incident is removed.So the effective traffic management is very important to relieve the congest and decrease the traffic delay.