A Pre-Signal Control Method for Intersections

Abstract

The invention discloses a pre-signal control method of an intersection, which comprises: a crossing where four roads meet, each road is provided with a pre-signal indicator light, an intersection signal indicator light, a pre-signal stop line and an intersection stop line; the dedicated circular bypass lane for left-turn traffic flow inside the intersection area; and the coordinated control method of pre-signal and intersection signal applicable to this intersection setting scheme. When the traffic flow is about to arrive at the intersection, the arriving traffic flow is pre-organized through the upstream pre-signal, so that the left-turn traffic flow is separated from the traffic flow in other directions. In this way, when the signal light at the intersection turns green, left-turn traffic flow can be released in four directions at the same time, and the left-turn traffic flow of all roads enters the circular bypass lane synchronously. Intersection, and greatly increase the utilization rate of the entrance road during the green light time of the intersection, and improve the traffic efficiency of the intersection.

Description

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

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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