通用干道双向绿波协调控制模型及其优化求解

A general model of bidirectional green wave for coordinate control of arterial road and its optimization solution

针对干道交叉口进口不同放行方式的实际需求,利用绿波协调控制中的时距分析方法,建立了通用干道双向绿波协调控制模型,设计了基于控制模型的信号配时优化流程,并利用混合整数线性规划方法实现了控制模型的优化求解.模型算法将不受进口放行方式与路段行驶速度的限制,能够遍历所有存在的最佳信号配时设计方案,且易于通过计算机编程实现其优化求解.算例分析表明,利用通用干道双向绿波协调控制模型进行交通信号协调配时设计,能够获得更为精确完整的最佳信号配时设计方案,具有较强的科学合理性.

Considering the actual demand for different traffic released modes,we developed a general model of bidirectional green wave for the coordinate control of arterial road by using the method of time-space analysis.Signal timing optimization process based on the coordinate control model is designed,and the control model is solved by the method of mixed-integer linear programming（MILP）.The algorithm is not constrained by either the traffic released mode or the link traffic speed;it finds out all possible optimal signal timing schemes by a simple computing programming.The example shows that the general model method can obtain optimal signal timing schemes more accurately and perfectly than the algebraic method.