主路协调下单点TSP策略关键控制参数仿真优化  

Simulation of Key Control Parameters with TSP Strategies and Artery Coordination on Isolated Intersections

作　　者：谭真[1] 黄志义[1] 梅振宇[1] 

机构地区：[1]浙江大学交通工程研究所,杭州310058

出　　处：《交通运输系统工程与信息》2012年第4期64-71,共8页Journal of Transportation Systems Engineering and Information Technology

基　　金：国家自然基金项目(50908205);浙江省自然科学基金项目(LY12E08020)

摘　　要：城市交通道路中很多都采用了干道协调加单点感应模式,实施公交信号优先(TSP),公交专用道通行相位一般为协调相位,这要求优先策略满足周期稳定的要求.考虑协调控制的约束,以实际关键交叉口为对象,通过VISSIM-VAP模块实现了满足特定约束的TSP策略控制逻辑.仿真分析不同流量条件下TSP策略对最佳周期的影响以及单位绿灯延长时间、初始绿灯时间等关键控制参数的优化方法.结果表明:在特定流量组合下,与传统TRRL公式法相比,增加周期存在一定效益;单位绿灯延长时间、优先相位初始绿灯时间的取值均需考虑特定的流量条件;且对比发现,红灯早断策略的效果略优于绿灯延长策略.The combination of arterial coordination and actuated control of single intersection has become a fascinating control pattern. Because coordination is usually implemented along the main road which has bus lanes, it requires active signal priority strategies with a stable cycle length. Taking the real key intersections on artery as the subject, the TSP controlling logics with specific restrictions are realized by the VISSIM-VAP module. Through simulation analysis, the effect of TSP strategies with flow variation on optimal cycle is discussed, together with a reasonable way to select gap time and priority phase＇ s initial green. The results show that under special flow combination, increasing the cycle time generated by traditional TRRL approach can obtain some extra benefits. And the volume condition has a bearing on both gap time and TSP phase＇ s initial green time. Besides, the efficacy of early green is slightly better than green extension strategy by comparison.

关 键 词：城市交通 主动信号优先 仿真分析 控制参数 最佳周期 单位绿灯延长时间 

分 类 号：U491[交通运输工程—交通运输规划与管理]