Control method and device of signal light at ring road junction of express way

Abstract

The invention provides control method and device of a signal light at a ring road junction of an express way. The control method of the signal light at the ring road junction of the express comprises the following steps of: after the signal light of an auxiliary road turns green until the first green light duration finishes, if the auxiliary road is in a congestion state, controlling the signal light to continuously turn green until the second green light duration finishes; if the ring road is in the congestion state, controlling the signal light to turn red until the first red light duration finishes; judging whether the auxiliary road is in the congestion state or not; if the auxiliary road is in the congestion state, controlling the signal light to turn green until the first green light duration finishes; and if the auxiliary road is not in the congestion state, controlling the signal light to continuously turn red until the second red light duration finishes, wherein the first green light duration is less than the second green light duration, and the first red light duration is less than the second red light duration. By controlling the operation of the signal light, the traffic pressure of a main road and the auxiliary road is effectively relieved, thereby realizing the purpose of reducing the congestion of express way by using the control method of the signal light at the ring road junction of the express way.

Description

technical field [0001] The invention relates to the technical field of traffic control, in particular to a method and device for controlling a signal light at an expressway ramp crossing. Background technique [0002] At present, with the increasing number of vehicles in the city, the traffic pressure on urban roads is increasing. In order to ease the inter-regional traffic pressure in the city, urban expressways are usually established between the central area and the edge area of ​​the city. Urban expressways usually include main roads and auxiliary roads, and the main roads and auxiliary roads are connected by ramps. Vehicles entering the urban expressway need to enter the auxiliary road first, and then enter the main road through the ramp; while vehicles traveling on the main road need to enter the auxiliary road first, and then drive out of the urban expressway through the auxiliary road. [0003] It can be seen from the above that since the main road and the auxiliary...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a control method and device for a signal light at an expressway ramp exit, which is used to solve the defect that the expressway is prone to congestion in the prior art, and realize the reduction of expressway congestion through the control method for the signal light at the ramp exit of the expressway

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