Key intersection and adjacent intersection traffic signal control method

Abstract

The invention provides a key intersection and adjacent intersection traffic signal control method, the key intersection adopts a one-way full-pass control method, and the adjacent intersection of thekey intersection adopts a three-turning traffic flow synchronization control method; and the release time of the adjacent intersection is determined by calculating the phase difference between the keyintersections and the adjacent intersections. The release duration is calculated by using a traffic wave correlation theory, so that a motorcade entering the entrance lane of the key intersection ateach adjacent intersection passes through the key intersection without stopping. The signal control method established by the invention is simple and easy to implement, and a simulation result shows that the signal control method can effectively prevent and improve the congestion condition of the key intersection, avoids the propagation and diffusion of congestion, and makes contribution to the smooth operation of the whole road network.

Description

technical field [0001] The invention relates to the field of traffic signal control, in particular to a traffic signal control method for key intersections and adjacent intersections. Background technique [0002] Large-scale congestion in a city often starts at a certain intersection in the road network. The intersection is generally located at the key position of traffic flow concentration and evacuation, and is called a key intersection in the road network. As the starting point of congestion spread, it is necessary to carry out reasonable signal timing and optimal control of key intersections to suppress the formation of congestion from the source. Because once the congestion occurs, if the accumulated vehicles dissipate in time, the queuing vehicles will overflow to the adjacent intersection, causing the green light at the adjacent intersection to fail, which will further cause the spread of congestion and traffic deadlock. Therefore, the primary problem to be solved ...

AI Technical Summary

Problems solved by technology

[0006] In view of this, in order to solve the problem of the four-phase control method in the prior art, the present invention provides a traffic signal control method for key intersections and adjacent intersections, which not only simplifies the phase control, but also achieves "queuing fairness", Avoid the phenomenon of drivers frequently changing lanes and jumping queues due to inconsistent release times of fleets at the same entrance and with different directions

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