为提高道路通行能力,减少交通事故发生率,在常规换道基础上提出新的换道形式,即为交叉换道;基于车路协同技术,建立数学模型研究交叉换道最小安全距离,确定最小安全距离公式,并考虑通信延迟因素修正最小安全距离;对模型进行仿真分析,在此基础上界定安全区域和非安全区域.仿真结果表明在车辆换道过程中,最小安全换道距离与换道车辆的加速度、换道时间和换道车辆与周围车辆间的相对速度等有关.%In order to improve the road capacity, reduce traffic accident rate, a new lane-changing style named cross lane-changing is put forward on the basis of conventional lane changing in the paper.Based on cooperative vehicle infrastructure, mathematical model is established to study the minimum safe distance of crossing lane changing, determine the minimum safe distance formula.To the communication delay factor, the minimum safe distance is revised.Simulation and analysis are then performed to define safety and non safety areas.The simulation results show that the minimum safe lane-changing distance is related to lane-changing vehicle acceleration, lane-changing time and the relative velocity between vehicles.
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