The invention discloses an intersection variable lane system optimization method considering lane switching influence. The method comprises the following steps: S1, initializing traffic parameters of a variable lane control system; s2, completing sub-period division according to the optimized time step length; s3, exhausting all lane switching times, switching opportunities, lane functions and signal timing combination schemes to form a lane switching sub-period matrix and a lane function signal timing matrix; s4, for each combination scheme, further dividing the sub-time period into a lane switching sub-time period and a signal switching sub-time period, and respectively calculating delay of the two types of sub-time periods; and S5, for each combination scheme, accumulating all sub-period delays to obtain a total delay, and selecting a minimum value of the total delay as a full-period optimal scheme. According to the invention, the defect of frequent switching of the variable lane without considering the switching cost is overcome, the switching times, the switching opportunity and the signal timing are collaboratively optimized in the whole optimization time period, the safety risk caused by frequent switching is reduced, and the overall traffic efficiency of the intersection in the whole time period is improved.
本发明公开了一种考虑车道切换影响的交叉口可变车道系统优化方法,包括:S1、初始化可变车道控制系统各交通参数;S2、根据优化时间步长完成子时段划分;S3、穷举所有车道切换次数、切换时机、车道功能和信号配时组合方案,形成车道切换子时段矩阵与车道功能信号配时矩阵;S4、针对每个组合方案,将子时段进一步划分为车道切换子时段和信号切换子时段,并分别计算两类子时段延误;S5、针对每个组合方案,累加所有子时段延误得到总延误,选择总延误最小值即为全时段最优方案。根据本发明,克服不考虑切换成本的可变车道频繁切换的弊端,同时在整个优化全时段协同优化切换次数、切换时机和信号配时,减少了频繁切换带来的安全风险,并提高全时段交叉口总体交通效率。
Intersection variable lane system optimization method considering lane switching influence
一种考虑车道切换影响的交叉口可变车道系统优化方法
2023-07-28
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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