Self-adaptation control method and system for traffic flow anti-overflow at signal-controlled intersection

Abstract

The invention provides a self-adaptation control method and system for traffic flow anti-overflow at a signal-controlled intersection. The self-adaptation control method for the traffic flow anti-overflow at the signal-controlled intersection comprises the steps of judging whether a queue overflow phenomenon happens at a downstream intersection; when the queue overflow phenomenon happens, detecting the remaining green light time of a current release phase, and detecting the queue overflow situation of the next phase which is adjacent to the current release phase; carrying out anti-overflow self-adaptation control on the traffic flow of the current release phase according to the remaining green light time; carrying out adjustment on the phase sequences of the next phase and a follow-up target phase, so as to carry out anti-overflow self-adaptation control on the traffic flow, wherein the follow-up target phase is positioned behind the current release phase and is not adjacent to the current release phase, and the queue overflow situation of the downstream intersection of the phase does not meet the preparatory condition. According to the method, the traffic flow anti-overflow self-adaptation control can be realized at the signal-controlled intersection, and the self-adaptation control effect can be improved.

Description

technical field [0001] The invention relates to the technical field of urban intelligent traffic control, in particular to a method and system for self-adaptive control of signal control traffic flow overflow prevention at intersections. Background technique [0002] In recent years, with the rapid increase in the number of motor vehicles in cities, urban road traffic is facing greater pressure. Moreover, due to the short distance between some intersections, when the signal timing is unreasonable or during the peak period, it is easy to cause the queue to overflow to the upstream intersection due to signal control. On the one hand, it causes a waste of green light time, and on the other hand As a result, the intersecting direction of the upstream intersection may be impassable during the green light time, thereby causing cross congestion at the intersection and causing a chain reaction at the surrounding intersections. [0003] In the related technology, detectors are insta...

AI Technical Summary

Problems solved by technology

Moreover, due to the short distance between some intersections, when the signal timing is unreasonable or during the peak period, it is easy to cause the queue to overflow to the upstream intersection due to signal control. On the one hand, it causes a waste of green light time, and on the other hand The situation that the intersecting direction of the upstream intersection may be impassable during the green light time, thus causing cross congestion at the intersection, leading to a chain reaction at the surrounding intersections

[0003] In the related technology, detectors are installed at the maximum queuing position upstream of the intersection entrance road at the signal control intersection to control the overflow of traffic flow. poor control

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