考虑混入逆行车辆的非机动车流元胞自动机模型

Cellular Automata Model of Non-motor Vehicle Flow Considering Reverse Vehicles

我国各大城市均有不同程度非机动车在单向非机动车道路上逆向行驶的现象。针对逆行车辆混入后的非机动车行驶特性,考虑逆向及正向行驶车辆遵循不同的换道规则,建立一种混入逆行车辆的非机动车流元胞自动机模型。模型的数值模拟结果表明:在低密度阶段,逆行车辆比例对于系统流量和速度的影响较小,而通行能力与平均速度随着逆行车辆比例的增大均降低;换道概率对非机动车混合交通流影响较大,当换道概率较小时,即使在低密度下也容易发生交通堵塞;当逆行车辆比例较大时,该模型成为了一个相互干扰的双向道路非机动车交通流模型。

The phenomenon of non-motor vehicle reverse driving in one-way non-motor vehicle road occurs in most China＇s cities. A cellular automata model of non-motor vehicle flow mixed with reverse driving vehicles was established, which considered the different lane-changing rules of the reverse and forward vehicle. The results of the computer numerical simulation for the model show that, in low density stage, the ratio of reverse vehicles has little effect on flow and speed, and the capacity and the avenge speed decrease as the ratio of reverse vehicles increases. Lane-changing ratio has a great influence on the mixed non-motor vehicles traffic flow, when the lane-changing ratio is small, even under low density, the traffic jams is prone to happen. When the ratio of reverse vehicles is larger, this model has become a two-way road non-motorized traffic flow model with mutual interference.