Trunk line coordination control method considering road running speed and intersection traffic state

Abstract

The invention relates to a trunk line coordination control method considering the road running speed and the intersection traffic state, and belongs to the technical field of traffic management and control. The method comprises the steps of calculating the signal period duration of each intersection according to the flow and flow direction characteristics of each trunk line intersection, and determining a key intersection and the signal period duration thereof; calculating the minimum effective green light duration of each turning direction of each intersection according to the flow and the key period duration of each intersection in combination with the traffic capacity of an entrance lane; designing and adjusting the phase scheme and signal timing of each intersection according to the key period duration and the minimum effective green light duration of each turning direction of each intersection in combination with staggered release time; and evaluating the phase scheme. According to the characteristics of the flow direction and the flow of the traffic flow at the intersection, reasonable phases are selected, different phase sequence arrangements are carried out, and various signal control schemes can be formed.

Description

technical field [0001] The invention relates to an arterial coordination control method considering road running speed and intersection traffic state, and belongs to the technical field of traffic management and control. Background technique [0002] By adjusting the phase difference of each intersection on the trunk line, the coordinated control of the trunk line signal establishes the linkage control relationship of the signal at the intersection of the trunk line direction, thereby reducing the number of vehicle stops on the trunk line, alleviating traffic congestion, and improving the traffic efficiency of the trunk line. The maximum green wave band method is a commonly used arterial coordination method. However, in actual situations, the unevenness of the intersection spacing makes the time when the traffic flow in the two directions arrives at the same intersection at different times, resulting in the time when the vehicle arrives at the intersection and the time when t...

AI Technical Summary

Problems solved by technology

The maximum green wave band method is a commonly used arterial coordination method. However, in actual situations, the unevenness of the intersection spacing makes the time when the traffic flows in the two directions arrive at the same intersection at different times, resulting in the time when the vehicle arrives at the intersection and the time when the green light turns on. It is difficult to match the time, which greatly limits the width and control effect of the green wave band in the coordinated control of the main line

Among the commonly used design methods for arterial coordinated control systems, the graphical method takes into account the intersection with the worst traffic conditions to achieve the optimal control effect, but it cannot ensure that the speed of the green wave belt matches the running speed of vehicles on the road; the numerical solution method can guarantee The speed of the green wave belt matches the running speed of vehicles on the road, but it cannot take into account that the period length of each intersection can meet the traffic capacity of the intersection

At the same time, no matter using the graphical method or the numerical solution method to solve the problem, there will always be a match between the time when the green light goes straight along the trunk line and the arrival time of the traffic flow, which leads to a poor coordination effect on the trunk line

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