The invention discloses a T-shaped intersection lane layout and signal timing combination optimization method. The method comprises the following steps: firstly, defining index variables related to a model, including an intersection branch index, a flow direction index, a lane index and a saturation flow reduction coefficient index; secondly, constructing a mixed integer linear planning model by introducing a double-ring standard phase, simultaneously considering a saturation flow reduction effect and configuration of a shared lane and a right-turn phase, taking signal period minimization as a target function, and taking lane layout, phase duration, saturation flow, traffic flow, a flow ratio and saturation as constraint conditions; and finally, solving the model by using a branch and bound method to obtain an optimal lane layout and signal timing scheme of the T-shaped intersection so as to improve the passing efficiency of the vehicle at the T-shaped intersection and reduce the delay of the vehicle at the intersection.
本发明公开了一种T形交叉口车道布局与信号配时组合优化方法;首先定义与模型相关的索引变量,包括交叉口分支索引、流向索引、车道索引和饱和流量折减系数索引;其次,通过引入的双环标准相位,同时考虑饱和流量折减效应以及共享车道、右转相位的配置,以信号周期最小化为目标函数,以车道布局、相位时长、饱和流量、交通流量、流量比及饱和度为约束条件,构建混合整数线形规划模型;最后使用分支定界法求解模型,得到T形交叉口最优的车道布局与信号配时方案,以提高车辆在T形交叉口的通行效率,降低车辆在交叉口处的延误。
T-shaped intersection lane layout and signal timing combination optimization method
T形交叉口车道布局与信号配时组合优化方法
2024-06-04
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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