A Dilemma Control Method for Signalized Intersections Based on Real-time Vehicle Trajectories

Abstract

The invention relates to a signalized intersection dilemma region control method based on a real-time vehicle track. The method is characterized by including the following steps that (1) state information of vehicles about to pass an intersection is acquired through a holographic detection device of the intersection; (2) according to the acquired state information of the vehicles about to pass the intersection, signal phase control of the intersection is conducted, and whether green light time needs to be prolonged or not is determined according to the acquired number of the vehicles located in a first dilemma region and a second dilemma region at the current moment and prediction of the number of the vehicles located in the first dilemma region and the second dilemma region at the next moment. Compared with the prior art, the method has the advantages of being high in safety, easy to implement, advanced and the like.

Description

technical field [0001] The invention relates to the field of traffic control, in particular to a method for controlling a dilemma area at a signalized intersection based on real-time vehicle trajectories. Background technique [0002] Within the range of signal-controlled intersections, there is a phenomenon called the dilemma zone, which is divided into the first type of dilemma area and the second type of dilemma area. The existence of the dilemma area greatly affects the traffic safety of the intersection. A type of dilemma is defined as a section of space where a vehicle traveling at a speed limit at an intersection can neither stop safely before the stop line nor pass through the intersection safely at the end of the yellow light. figure 1 It is a schematic diagram of a dilemma. Xs represents the minimum distance that can safely stop before the stop line. If the distance from the vehicle to the stop line is less than Xs when the yellow light is on, the vehicle cannot sa...

AI Technical Summary

Problems solved by technology

The traditional dilemma control system often uses a coil detector, which is difficult to detect the real-time state of the vehicle, so that the state information of the vehicle cannot be continuously and accurately judged

[0005] 2) Insufficient protective effect

Limited by the defects of traditional detection methods, there are deficiencies in the control algorithm level, which ultimately leads to insufficient protection effects

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