Signal control method for preventing dead lock of intersection

Abstract

The invention discloses a signal control method for preventing the dead lock of an intersection. The signal control method comprises the following steps of firstly, determining the installation position of an overflow detector in the direction of a main arterial road at the intersection through measurement and operation, and then installing an overflow sensor in the corresponding position; judging whether the intersection n is in an overflow state or not in real time through the overflow sensor; obtaining the running speeds of vehicles which pass by the overflow detector through the overflow detector, calculating an average speed value, comparing the average speed value with a preset fixed speed threshold value, and judging whether the intersection n is in the overflow state or not; in the case that a traffic overflow occurs to the intersection n, optimizing the preset signal timing of a traffic signal lamp at the intersection at the moment; in the case that the average speed value of the vehicles is greater than the speed threshold value, which indicates no occurrence of the traffic overflow to the intersection, operating the traffic signal lamp at the intersection according to the preset signal timing at the moment. The signal control method has the advantages of effectively preventing the traffic overflow from occurring, avoiding a phenomenon of red light running and maintaining the pass order at the intersection.

Description

technical field [0001] The invention relates to the field of urban road traffic control, in particular to an anti-locking traffic signal control method at an intersection. Background technique [0002] Due to the impact of oversaturated flow at urban intersections, the queue length of vehicles in a certain direction will exceed the length of the road section, resulting in an overflow state at the intersection. In this case, according to the traffic regulations, the vehicles of the overflow direction car need to stop near the stop line and are not allowed to enter the intersection until there is enough space at the intersection to accommodate these vehicles. However, in many crowded cities, because drivers are not familiar with these laws and regulations, as long as the signal light is green, even if the intersection is in an overflow state, vehicles continue to enter the intersection. , affecting the traffic of vehicles in other directions, seriously reducing the traffic ef...

AI Technical Summary

Problems solved by technology

Due to the location of the existing detectors, it is impossible to effectively identify the overflow of the intersection, so it is also impossible to optimize the intersection under the overflow state.

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