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为了更加客观地描述实际的车辆跟驰行为,在优化速度模型的基础上,通过引入横向分离参数并提出超车期望和虚拟前车的概念,建立了考虑横向分离与超车期望的车辆跟驰模型.对模型进行线性稳定性分析,得到了模型稳定性条件,发现车辆横向分离、超车期望和虚拟前车的位置的增加,在车流密度较小、车速较快的情况下,使得交通流稳定区域增大,但在车流密度较大、车速较慢的情况下,反而使得交通流稳定区域减小.数值模拟结果验证了模型稳定性分析的结果,表明在交通瓶颈处等交通流密度较大、运行缓慢的区域,为抑制交通拥堵,应该限制车辆的横向偏移和超车行为的发生.
In order to describe the actual vehicle following behavior objectively and objectively, based on the optimization of the velocity model, a car following model considering lateral separation and overtaking expectation was established by introducing transverse separation parameters and proposed the concept of overtaking and virtual front vehicle. The linear stability of the model is analyzed and the stability of the model is obtained. It is found that the lateral separation of vehicles, overtaking expectation and the location of the virtual front vehicle increase. When the traffic density is low and the speed is fast, the stability of the traffic flow is increased However, in the case of large traffic density and slow speed, the stability of traffic flow is reduced.Numerical simulation results verify the results of the model stability analysis, indicating that traffic flow at the traffic bottleneck and other traffic density, running Slow areas, to curb traffic congestion, should limit the vehicle’s lateral offset and overtaking behavior.