Pre-signal control method of intersection

Abstract

The invention discloses a pre-signal control method of an intersection, comprising: the intersection of four roads, wherein a pre-signal indicator lamp, an intersection signal indicator lamp, a pre-signal stop line and an intersection stop line are arranged on each road; a dedicated annular bypass lane for left-turn traffic flow arranged in an intersection area; and a coordinated control method ofpre-signals and intersection signals suitable for the intersection setting scheme. When the traffic flow is about to reach the intersection, the arriving traffic flow is pre-organized via an upstreampre-signal, so that the left-turn traffic flow is separated from the traffic flow in other directions. Therefore, when the intersection signal light is converted into a green light, the left-turn traffic flow can be simultaneously released in four directions, the left-turn traffic flow of all roads enters the annular bypass lane at the same time and synchronously leaves the intersection through the corresponding exit lanes after anticlockwise bypassing for a period of time, the utilization rate of entrance lanes during the green light time of the intersection is greatly improved, and the traffic efficiency of the intersection is improved.

Description

technical field [0001] The invention belongs to the technical field of traffic design and control, and relates to a pre-signal control method for an intersection. Background technique [0002] Under the existing background, most of the intersection signal control methods are inefficient to operate, the main reasons include: [0003] 1. There are multiple conflict points between the left-turn traffic flow and traffic flow in other directions, which leads to the need for multiple phases for the left-turn traffic flow of all roads, which compresses the green light time in the straight direction, resulting in low efficiency of intersection operation. [0004] 2. The more the number of signal phases in one cycle of the intersection, the more the start-up loss time and tail-clearing loss time in one cycle, which reduces the operating efficiency of the intersection. [0005] 3. Under the current background, during the green light time of a phase, usually only vehicles in some entr...

AI Technical Summary

Problems solved by technology

[0003] 1. There are multiple conflict points between left-turn traffic flow and traffic flow in other directions, resulting in multiple phases for the left-turn traffic flow that clears all roads, which compresses the green light time in the straight direction, resulting in low efficiency of intersection operation

[0004] 2. The more the number of signal phases in one cycle of the intersection, the more the start-up loss time and tail-clearing loss time in one cycle, which reduces the operating efficiency of the intersection

[0005] 3. Under the current background, during the green light time of a phase, usually only vehicles in some entrance lanes on a certain road can enter the intersection, while vehicles in other entrance lanes need to wait, and the space of the entrance lanes is not fully utilized. Unable to maximize the efficiency of intersection traffic

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