Traffic signal control method for road intersections

Abstract

The invention belongs to the field of urban road intersection control and relates to a traffic signal control method for road intersections. The present invention provides an idea of combinatorial optimization from the two-dimensional perspective of time allocation and space allocation, uses a variable steering strategy and a signal optimization strategy simultaneously at a signal intersection, and clears remaining vehicles in a lane by setting a pre-signal, and the operability problem in a process of changing the attributes of a variable guided lane. From the collection of traffic data to thetriggering and operation of the function change of the variable guided lane, and to the optimization of an intersection signal system, the method provides a systematic, complete and implementable technical solution to reduce vehicle delays at the intersection and improve the service level at the intersection.

Description

technical field [0001] The invention belongs to the field of urban road intersection control and relates to a traffic signal control method for road intersections. Background technique [0002] The intersection is the place where the traffic flow of all directions in the urban road network converges. Vehicles change direction and interfere with each other here, resulting in the intersection capacity being lower than the road section, becoming the bottleneck of the urban traffic network and the source of traffic congestion. The left-turn traffic flow is the traffic flow with the most conflict points, and it is also the most important factor affecting the traffic efficiency of grade intersections. Therefore, an important means to alleviate urban traffic congestion is to ensure smooth traffic at intersections, and the key to improving the traffic environment at intersections is to organize left-turn traffic flows. [0003] Conventional left-turn traffic organization optimizati...

AI Technical Summary

Problems solved by technology

Most of the existing studies only consider simple time optimization or the implementation of variable steering lane strategy for space optimization, and some collaborative optimization studies are only from a theoretical point of view, assuming that the signal scheme and lane functions change at the same time, ignoring the frequent changes in lane functions. The increase of lane-changing behavior and reaction time caused by the change does not consider the adaptability of the driver during the lane function change process, and the operability is poor

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