作　　者： ; ; ; ;

机构地区： 华南理工大学土木与交通学院

出　　处： 《广西师范大学学报（自然科学版）》 2011年第4期1-6,共6页

摘　　要： 通过对车辆换道时车辆的运动轨迹的分析,以最小安全距离MSD(minimum safety distance)作为安全换道的目标,以避免车辆发生碰撞的临界条件为前提,分别建立了双车道环境下换道车辆与其周围车辆之间的最小安全距离换道模型。在车辆换道过程中,对与换道相关联车辆的运动状态进行了详细的分析,给出了换道车辆与关联车辆之间各种可能的碰撞形式,并充分考虑了换道车辆完成换道后的跟驰安全性,既能够较好地保障车辆换道的安全性,又能提高道路的使用效率。最后,借助Matlab仿真软件,以最小安全距离换道模型为理论基础,结合实际例子进行仿真分析,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。 Using the minimum safety distance as an index of safe lane-changing,the kinematics of the vehicle ,which involved lane-changing maneuvers is analyzed. After studying the critical condition of avoiding collision, the minimum safety distance lane-changing model between lane-changing vehicle and its nearby vehicles is built. After analysing the movement state of the related vehicles when a vehicle is changing lanes ,all kinds of collisions between lane-changing vehicle and related vehicles are given. This model fully considers car-following safety when lane change is finished ,which can not only improve the safty security when vehicle changes lanes,but also improve the efficiency of the roads. Finally,simulation was carried out on the matlab simulation platform based on the theories of lane-changing model and minimum saftey distance. The results show that the minimum safe lane-changing distance is related to lanechanging vehicle acceleration ,lane-changing time and the relative velocity between vehicles.

关 键 词： 交通流 车辆换道 加速度 车辆跟驰 最小安全距离

领　　域： [交通运输工程] [交通运输工程]