Traffic signal control method based on traffic flow conflict point occupancy rate at center of intersection

Abstract

The invention discloses a traffic signal control method based on a traffic flow conflict point occupancy rate at the center of an intersection. The method comprises steps: 1, the occupancy value of atraffic flow conflict point is acquired; 2, the effective green light use time of each traffic flow is calculated; 3, the green light time allocated for each flow under the current signal control scheme is calculated; 4, the invalid green light time of each phase is calculated; 5, the green light time use rate of each phase is optimized according to a control target; and 6, a new signal control scheme is formed. The traffic signal control method based on the traffic flow conflict point occupancy rate at the center of the intersection has the beneficial effects that the green light use condition of each flow can be analyzed and calculated according to the occupancy rate condition of the traffic flow conflict point at the center of the intersection, on the basis, the green light time of eachphase in a signal control scheme is optimized, the use rate of the phase green light time is improved, empty release is reduced, and the traffic delays at the intersection are reduced.

Description

technical field [0001] The invention relates to the field of urban road traffic signal control, in particular to a traffic signal control method based on the occupancy rate of traffic flow conflict points at the intersection center. Background technique [0002] To realize the dynamic adjustment of the traffic signal control scheme at the road intersection, the current technology mainly obtains the traffic flow demand of each entrance of the intersection in real time, according to the traffic volume demand of each entrance of the intersection, combined with the goal of the traffic signal control of the intersection (such as the balanced delay of each entrance) , east-west traffic flow vehicle parking queuing times do not exceed 1 time, etc.), the green light time allocated to each entrance in line with the preset control objectives. [0003] The current technology can obtain the traffic flow demand of each entrance at the intersection by detecting the traffic flow of each en...

AI Technical Summary

Problems solved by technology

Because of the spatial distribution of intersections, this method requires the deployment of testing equipment at each entrance of the intersection. Taking a standard intersection as an example, it is necessary to deploy a set of testing equipment at each of the four entrances to collect the traffic flow parameters of the entrance. The testing equipment The construction investment is relatively large

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