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为了再现快速路交织区交通流的运行特性,在跟驰模型中引入交通压力,并采用驾驶人心理制约条件对车辆换道模型进行改进,将二者结合起来提出了新的快速路交织区交通流模型;应用Java语言编写程序,针对不同的交通状态进行模拟再现。仿真结果表明:当交通量一定时,直行车辆和交织车辆的平均速度都会随着交织区长度的增加而增大;交织区长度增加为交织车辆的交织运行提供了较大空间,随着交织区长度的增加,交通量略有增加,交织区长度的增加可以有效抵消交通量的增加对直行车辆的干扰;在交通量较小时,车辆速度随着交织区长度的变化较小,高流量时,交织区长度对平均速度的影响较大,当交织区长度小于150 m时,外侧直行车辆车速大于交织车辆的车速,随着交织区长度增加,交织车辆的速度接近于直行车辆的速度,当交织区长度大于350 m后,变化就不明显。
In order to reproduce the traffic flow characteristics of expressway intertwined zone, traffic pressure is introduced into the following car model, and the vehicle lane changing model is improved by using the driver’s psychological constraints. Combining the two, a new expressway intertwined traffic is proposed Flow model; program written in Java language, for different traffic conditions for analog reproduction. The simulation results show that when the traffic volume is constant, the average speed of straight-ahead vehicles and interlaced vehicles increases with the length of the interlaced zone. The increase of the interlaced zone length provides more room for the interlaced operation of the interlaced vehicle. As the interlaced zone When the traffic volume increases, the traffic volume increases slightly, and the increase of the length of the interlaced zone can effectively counteract the disturbance caused by the increase of traffic volume on the straight-ahead vehicles. When the traffic volume is small, the vehicle speed changes little with the length of the interleaving zone. When the length of the interlaced zone is less than 150 m, the speed of the outboard straight vehicle is greater than that of the interlaced vehicle. As the length of the interlaced zone increases, the speed of the interlaced vehicle approaches the speed of the straight-ahead vehicle. When the length of the interlaced zone is less than 150 m, When the length of the area is more than 350 m, the change is not obvious.