Induction signal control method for ring-shaped intersection

Abstract

The invention discloses an induction signal control method for a ring-shaped intersection, comprising the following steps of: setting a ring circling vehicle arrival detection coil, a ring entering and ring surrounding vehicle queuing detection coil and a ring circling induction signal lamp at the ring-shaped intersection; judging whether the arrival of the following ring circling vehicles is detected by the ring circling vehicle arrival detection coil within ring circling vehicle preliminary green light time, if not, transforming phase, setting ring entering vehicle preliminary green light time, if so, judging whether the queuing vehicle is detected by the ring entering vehicle queuing detection coil; if no queuing vehicle is detected by the ring entering vehicle queuing detection coil, prolonging ring circling green light interval time, and if the queuing vehicle is detected by the ring entering vehicle queuing detection coil, transforming the phase, and providing ring entering preliminary green light time. With the control method, the priority of the ring circling vehicles can be ensured, when the vehicle queue is too long, benefits of the ring circling vehicles and the ring entering vehicles can be balanced, so that the control method is suitable for random arrival of the traffic, and can thoroughly settle the conflict between the ring entering vehicles and the ring circling vehicles, reduce delay of the traffic, alleviate traffic jams and improve traffic safety.

Description

technical field [0001] The invention belongs to the field of urban road traffic control, and relates to a traffic signal control method, in particular to an induction signal control method of a roundabout. Background technique [0002] At present, the status quo of urban traffic is that no vehicle detectors and induction control signal lights are installed at roundabouts. Therefore, with the increase of urban traffic volume, roundabouts are increasingly unable to meet the needs of vehicles, mainly reflected in: (1 ) When the vehicles entering the ring do not obey the traffic rules and give way to the vehicles around the ring, it will cause traffic disorder and cause traffic accidents; (2) The capacity of conventional roundabouts is limited by each weaving section, and cannot The number of lanes and the number of lanes of the ring road can effectively improve the traffic capacity, resulting in insufficient traffic capacity; (3) Although the timing signal control of the rounda...

AI Technical Summary

Problems solved by technology

[0002] At present, the status quo of urban traffic is that no vehicle detectors and induction control signal lights are installed at roundabouts. Therefore, with the increase of urban traffic volume, roundabouts are increasingly unable to meet the needs of vehicles, mainly reflected in: (1 ) When the vehicles entering the ring do not obey the traffic rules and give way to the vehicles around the ring, it will cause traffic disorder and cause traffic accidents; (2) The capacity of conventional roundabouts is limited by each weaving section, and cannot The number of lanes and the number of lanes of the ring road can effectively improve the traffic capacity, resulting in insufficient traffic capacity; (3) Although the timing signal control of the roundabout can improve the traffic capacity of the roundabout in practice, due to the urban traffic flow Arrival is often random, and an inherent defect of using timing control is that it is difficult to match the signal timing with the arrival of traffic flow, which often results in the waste of green light resources and the increase of vehicle delays

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