论文部分内容阅读
针对高速公路隧道交通瓶颈,通过分析高速公路隧道区域通行环境特性,研究车辆行驶在高速公路隧道路段时的换车道、加速、减速等微观交通现象,在双车道元胞自动机模型STCA模型基础上,引入车辆速度控制条件和车道控制条件,提出了一种高速公路隧道交通瓶颈元胞自动机模型,分析了不同长度高速公路隧道对区域路段交通流的影响。研究结果表明:建立的模型能够模拟车辆在高速公路隧道区域的时空变化特征;高速公路隧道瓶颈会对紧邻瓶颈下游的特定长度路段的交通流产生缓冲作用;隧道路段区域的最大流量以及平均车速与无隧道路段区域相比,将会随着隧道长度的增加而逐渐降低。
Aiming at the traffic bottleneck of expressway tunnels, this paper studies the traffic environment characteristics of expressway tunnels, and studies the traffic lanes, acceleration, deceleration and other micro-traffic phenomena when driving on highway tunnel sections. Based on the two-lane cellular automata model STCA model , The condition of vehicle speed control and lane control are introduced. A bottleneck cellular automata model of expressway tunnel traffic is proposed, and the influence of expressway tunnels with different length on the traffic flow of regional road sections is analyzed. The results show that the model can simulate the spatial and temporal variation of vehicles in the expressway tunnel area. The tunnel tunnel bottleneck will buffer the traffic flow in the specific length of the section immediately downstream of the bottleneck. The maximum flow rate, Compared with the non-tunnel section, it will gradually decrease with the increase of tunnel length.