城市交通信号灯的配时优化
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摘要
研究了城市相邻两交叉口信号配时问题.先以单交叉口为研究对象,选择道路通行能力和平均延误时间作为评价指标,构造多目标联合优化函数对平均延误时间进行修正,建立最优信号配时模型.再确定A,B交叉口的相对位置,引入平均延误时间,结合两交叉口各现行参数,得出左转、直右转车道的实际饱和流率.运用遗传算法进行优化,得出最优配时方案.仿真模型检验结果表明,该方案对缓解交通压力的效果显著.
The signal timing problem of two adjacent intersections is studied.First,a single intersection is taken as the object of study.The capacity and the average delay time are selected as the evaluation indexes.The multi-objective joint optimization function is constructed.The average delay time is modified to establish the optimal signal timing model.Through determination of the relative position of A and B intersections and introduction of the average delay time,and according to the current parameters of the intersections,the actual saturation flow rates of the left-turn and right-turn lane are calculated.The genetic algorithm is used to calculate the optimal timing scheme and the simulation model is tested.The results show that the scheme has a significant effect on relieving the traffic pressure.
The signal timing problem of two adjacent intersections is studied.First,a single intersection is taken as the object of study.The capacity and the average delay time are selected as the evaluation indexes.The multi-objective joint optimization function is constructed.The average delay time is modified to establish the optimal signal timing model.Through determination of the relative position of A and B intersections and introduction of the average delay time,and according to the current parameters of the intersections,the actual saturation flow rates of the left-turn and right-turn lane are calculated.The genetic algorithm is used to calculate the optimal timing scheme and the simulation model is tested.The results show that the scheme has a significant effect on relieving the traffic pressure.
引文
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[2]TRABIA MONHAMED B,KASEKO MOHAMED S,ANDE MURALI.A Two-Stage Fuzzy Logic Controller for Traffic Signals[J].Transportation Research Part C:Emerging Technologies,1999,7(6):453-458.
[3]PARK BYUNGKYU,MESSER CARROLL,URBANIK II THOMAS.Enhanced Genetic Algorithm for Signal-Timing Optimization of Oversaturated Intersections[C].Washington D C,United States:Transportation Research Board,2000:32-41.
[4]蔡锦德.城市道路交叉口的信号配时优化研究[D].北京:北京交通大学,2012:19-20.
[5]陈群,晏克非.基于遗传算法的城市交叉口实时信号控制研究[J].交通与计算机,2005,23(1):15-18.
[6]王京元.信号交叉口时空资源综合优化实用方法研究[D].南京:东南大学,2005:15-32.
[7]曹成涛,徐建闽.单交叉口交通多目标控制方法[J].计算机工程与应用,2010,46(12):20-22.
[8]高云峰,徐立鸿,胡华,等.交叉口定周期信号控制多目标优化方法[J].中国公路学报,2011,24(5):82-88.
[9]肖秀春,徐建闽.近距离相邻交叉口信号协调控制模型研究[J].公路与汽运,2011(1):11-16.
[10]杨佩昆,张树升.交通管理与控制[M].北京:人民交通出版社,2003:122-136.
[11]张鹏,常玉林.信号交叉口机动车饱和度配时方法研究[C]∥2007第三届中国智能交通年会学术委员会.2007第三届中国智能交通年会论文集.南京:东南大学出版社,2007:278-281.
[12]刘金琨.智能控制[M].北京:电子工业出版社,2014:238-243.
[13]TRB.Highway Capacity Manual(HCM)2000[S].Washington D C:National Research Council,2000.