基于路由选择的城市道路车辆转向换道区域设置

Lane change area setting of urban road vehicle based on routing selection

为了减少因随机换道产生的延误,提出基于路由选择的车辆换道区域设置,即通过设置城市路段固定换道区域及制定车辆可变限速策略,将其转化为基于路由选择的车辆静态路径规划问题.利用VISSIM仿真软件,初建车辆换道场景,设计试验分析换道区域设置对城市道路车辆运行情况的影响;汇总数据并借助MATLAB进行数据拟合,得出在不同速度、流量及转向比例条件下的最佳换道区域设置长度.进行了有、无控制策略对比试验.结果表明:在565 m的仿真路段中,设置车辆换道区域、制定路径引导策略后,车辆换道次数减少了106次,车辆平均行程速度增加了12.13%,平均行程时间减少了10.80%,降低了因随机换道造成的延误,有效提高了区域路网的运行效率.

To reduce the delay caused by random lane change,the vehicle change area setting was proposed based on routing selection.By setting up fixed lane change area in urban road section and formulating vehicle variable speed limit strategy,the problem was transformed into vehicle static path planning according to routing selection.The influence of the lane change area setting on the operation of urban road vehicles was designed and analyzed by VISSIM simulation software.The data were summarized and fitted by MATLAB,and the optimal length of lane change area were obtained for different speed,flow rate and steering ratio.The comparison experiment with and without control strategy was carried out.The results show that in the 565 m simulation road section,by setting up lane changing areas and formulating path guidance strategies,the number of vehicle lane changing is reduced by 106 times,and the average travel speed of vehicle is increased by 12.13%with reduced average travel time by 10.80%.The delay caused by random lane changing is reduced,and the operation efficiency of regional road network is effectively improved.