一种双目标单点信号配时优化模型

A Bi-objective Signal Timing Optimization Model for Single Intersection

基于城市平面信号交叉口的客观实际,建立多约束的单点定时信号配时优化模型,模型以节点通行能力最大和车辆平均延误最小作为目标,通过转换得到综合目标函数,并利用阈函数法(SUMT)获取最优配时参数。与此同时,引入交叉口实例,结合调查数据,导入信号配时优化模型,通过程序计算获取配时参数、通行能力及车辆平均延误值,其结果通过配时检验,证明存在较高的理论参考价值。

Based on the realistic condition of urban intersection,the paper established a multi-restriction timing model of single signalized intersection.The model's objective is to make the capacity biggest and the vehicles average delay smallest.The synthetic objective function was obtained through conversion.The optimal timing parameter was acquired by using the SUMT.Meanwhile,an example at an intersection was introduced.Based on the surveyed data,a signal timing optimization model was induced.The timing parameters,capacity and the vehicles average delay were calculated and acquired by the program.The realistic timing verifies that the result is valuable theoretically.