Method for calculating green wave effective coordinated time

Abstract

The invention discloses a method for calculating green wave effective coordinated time. For monitoring the running state and control effect of a trunk line green wave coordination control system to determine the switching time points of different trunk line traffic signal control schemes, a definition and a calculation method of effective coordinated time are firstly given, the running state of a current green wave coordination control system is dynamically monitored, a bottleneck intersection in a green wave coordination system is determined by accumulating punishment score values, and the influence of effective coordinated time on the switching time points of the signal control schemes is discussed lastly. As shown by a simulation test result, the running state of the green wave coordination control system can be effectively monitored by adopting the effective coordinated time, the bottleneck intersection in the system is discovered accurately, and technical support can be provided for improving a trunk line traffic organism and perfecting a trunk line control scheme.

Description

technical field [0001] The invention relates to the field of green wave system control in traffic, in particular to a dynamic monitoring method for the running state of the green wave system. Background technique [0002] The so-called "green wave" refers to the fact that the traffic flow along a certain main route continuously receives green light release signals one after another, and passes through all intersections along the way unimpeded. The existing green wave coordinated control method selects the optimization target from different angles, and seeks the optimal bandwidth of the one-way or two-way green wave coordinated control system. Practical application shows that green wave coordinated control works better in low flow or unsaturated conditions, and the traffic flow can pass through several signalized intersections at a certain speed, but the effect is poor in high flow or congestion conditions, even in peak hours. There is a "deadlock" phenomenon in which vehicl...

AI Technical Summary

Problems solved by technology

However, the existing coordinated control methods for trunk lines cannot realize the above functions

Although the relatively mature urban road traffic state discrimination method can judge the road traffic state, the traffic data required in the method is still difficult to obtain in reality. If congestion occurs at the port, it may not immediately lead to the failure of the coordinated control of the main line. If this is used as a basis to switch the signal control scheme, the control effect may be unsatisfactory.

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