基于分子动力学的车辆换道交互行为特性及其模型

传统换道模型中，把前后临界空隙作为参数固定数值，忽视了车辆和车道间的动态交互作用等因素.从分子动力学角度，系统考虑跟驰需求安全特性，从动态的需求安全距离角度研究车辆在“跟驰-换道-跟驰”过程中的行驶状态转换.确保在换道完成时，换道车辆和目标车道后车能以需求安全距离进行跟车行驶，建立了模拟分子动力学的期望安全间距模型，并对模型进行了仿真分析.结果表明，分子动力学特性模型可以把跟驰行为和换道行为很好地结合起来.研究成果为分析车辆运行交互特性，车辆可变限速技术，自适应巡航控制技术等提供理论依据和技术支撑.

Molecular Dynamics Characteristics and Models of Vehicle Lane Changing Interaction Behavior

The critical lead and follow gap was fixed as a parameter under traditional lane changing models， ignoring the influence of dynamic coupling information between the vehicles and the lanes. Car following necessary safety distance is proposed, and the safety convert of the vehicle in the process from car-following, lane changing, car-following is studied from dynamic point of safety distance. After lane changing completing, the lane changing vehicle and the rear vehicle of target lane are ensured to run with necessary safety distance, on the base, desired safety spacing model is established，and the model is simulated and analyzed. The results show that the model can commendably combine car-following and lane changing behavior. And provide a necessary foundation and technical support for further research and development of the autonomous lane-changing systems.