考虑侧向偏移的车辆跟驰模型

Vehicle-following model considering lateral offset

为了定量描述前导车与跟驰车之间的侧向偏移对车辆跟驰行为的影响,建立了考虑侧向偏移的车辆跟驰模型。通过引入中心线偏移量的概念,建立了侧向偏移与前导车加速度的关系,进而将跟驰模型扩展到二维模式。对模型进行数值仿真分析,表明模型符合稳定性的要求,同时能够描述实际交通流中的一些宏观现象。这些结果验证了新模型的有效性。

A vehicle-following model considering the lateral offset was built to describe quantitatively the impact of the lateral offset between the leading vehicle and the following vehicle on the vehicle-following behavior.The relationship between the lateral offset and the acceleration of the leading vehicle was established by introduction of a concept of the centraline offset,extending the vehicle-following model into two-dimensional mode.The numerical simulation analysis was made using the built model and the results verified the effectiveness of the model.The local stability and the asymptotic stability were achieved in the vehicle-following situation.Meanwhile,the model can describe some macroscopic phenomena in the actual traffic flow.