关键词: 交通运输工程, 公交左转优先, 逆向可变车道, 左转公交专用道

Abstract: Aiming at the problem of low utilization of timespace resources at exit of intersection and to pursue the goal of giving priority of right of way to leftturn transit bus at entry lane, a priority of right of way management method was proposed which allows for priority right of way of leftturn bus at intersection by setting a reverse variable lane and exlusive lane for leftturn bus based on existing road conditions and thus the priority of leftturning bus was achieved.The conditions meeting the requirements of both lanes at cross were analyzed and the lanes were designed. The corresponding signal control method was proposed and in combination with design case the effect of running intersection before and after setting reverse variable lanes were compared by software VISSIM. The simulation results demonstrate that the management mode with reverse variable lane can effectively reduce average delay of leftturn bus at given entry and improve its traffic volume without impacting the normal movement of traffic bounding for other directions at that intersection. The effectiveness of the method was proved by reality. Therefore, the above new ideas and methods provided can achieve a better priority for the leftturn bus meanwhile reducing the idle time of exit lane.

Key words: traffic and transportation engineering, priority right of way of leftturn bus, reverse variable lane, exclusive lane for leftturn bus