A pre-signal control method for multi-flow waiting areas and dislocated stop lines at intersections

Abstract

The invention discloses a pre-signal control method for an intersection multiple-flow-direction waiting area and a dislocation -type stop line. The method comprises the following steps of: (1) determining the distance between a main-signal and pre-signal stop line to be the length of a maximum integrated waiting area; (2) conducting an integrated waiting area upstream section length limiting and determining whether a link section meets the requirements for setting a pre-signal; 3) calculating the dislocation distance of the dislocation-type stop line, and further determining the length of the waiting area for each lane; 4) according to the pre-signal set position, determining a main and pre-signal coordination timing program; and 5) a main signal at the intersection adopting four-phase signal control; at the intersection, the pre-signal adopts eight-phase control; and the main and pre-signal are subjected to coordinated eight-phase control. The method of the invention has the beneficial effects that the main and pre-signal coordinated control is adopted and the separated phases can effectively guarantee vehicles in different flow directions enter and get away from the waiting area in batches in an ordered and highly efficient mode.

Description

technical field [0001] The invention relates to the technical field of road traffic control, in particular to a pre-signal control method for a multi-flow waiting area and a dislocated stop line at an intersection. Background technique [0002] As the bottleneck part of the road network, intersections are prone to traffic congestion. Once traffic congestion occurs, it will affect the queuing of vehicles and spread to the upstream intersections of the road section, making local and entire arterial networks extremely congested. When there is a large difference in the traffic flow of different turns at the intersection, the signal control will be unbalanced, and even the queue will overflow. Therefore, the most important thing to do now is to consider how to design and arrange the intersection in time and space. To maximize the operational efficiency of intersections. Existing measures to solve the problem of congestion at intersections mainly include measures such as far-lead...

AI Technical Summary

Problems solved by technology

[0004] However, the setting of the above-mentioned intersection entrances did not consider the relationship between the length of the waiting area between the main pre-signal stop lines and the queuing of vehicles, and did not conduct in-depth analysis and modeling of the main pre-signal coordination control parameters; , the layout form of the waiting area and the layout form of the pre-signal stop line are analyzed in detail, and the length of the upstream section of the waiting area is not limited. certain inconvenience

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