Reversible short lane control method based on intersection dynamic left turn restriction

Abstract

The invention discloses a reversible short lane control method based on intersection dynamic left turn restriction. Reversible short lanes are set at two entrances of a trunk road at the intersectioncorrespondingly through existing lanes special for left turn, and the positions, in the back direction of the two sides of a greenbelt, of the tail ends of the reversible short lanes are each providedwith a set of lane indicating lamps and convergence control lamps; and a flow detector is arranged in front of a trunk road parking line, and left turn restriction front-rear phases of main signals and the phase difference between the convergence control lamps and the main signals are set. The control type is determined according to the trunk road left turn flow, the directions of the reversibleshort lanes and the lamp color situations of all the signal lamps are determined according to the trunk road straight-going total flow, the control type can be adjusted in real time along with directional change of the trunk road flow, it is ensured that straight-going vehicles pass through the intersection safely, orderly and efficiently from the perspectives of the time and the space, and on thebasis without extending existing road facilities, the straight-going traffic capacity of the trunk road and the traffic safety of the straight-going vehicles are improved greatly.

Description

technical field [0001] The invention relates to a reversible short-lane control method based on a dynamic left-forbidden intersection, and belongs to the technical field of urban road traffic management and control. Background technique [0002] Morning and evening rush hour congestion on urban main roads is no longer an exclusive feature of first- and second-tier cities. Urban roads cannot be expanded without restraint, so using road traffic management and control methods to optimize existing roads and intersections has become an effective way to solve this problem, and the prohibition of left at intersections is one of the important means. [0003] The biggest advantage of banning the left at intersections is that it requires less investment and quick results. It only needs to adjust the lane function and signal facilities, and does not involve civil engineering. At the same time, the number of conflicts at intersections is reduced after the ban on the left, and the numbe...

AI Technical Summary

Problems solved by technology

[0004] However, in the existing left-hand ban management at intersections, the time period for the left-hand ban is fixed and single, and only the left-turn lane after the left-hand ban is considered to be directly set as a through lane, which causes the following two main problems:

[0005] ① On the basis of the same number of exit lanes, a straight entrance lane is added. The number of straight entrance lanes is more than the number of exit lanes and the lanes are asymmetrical. Affects the efficiency of through-traffic flow

[0006] ② When the morning and evening peak traffic volumes of the main road differ greatly, the response flexibility is poor and it is easy to cause a waste of lane resources

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