Parallel left turn method for level crossing

Abstract

The invention discloses a two-phase passing method for a level crossing. According to the method, three functional areas, namely an exit left turn area, an entrance buffer area and a crossing diversion area, are provided, wherein each functional area has signal control and signals of the functional areas are associated with each other. An inner left turn lane at the middle and an outer left turn lane at the left side of the road are parallel to define the exit left turn area; an entrance is provided with two parking lines, a parking buffer area is arranged between the two lines, wherein a parking area is arranged at the front part and a turning area is arranged at the rear part, and a left turn/turning to-be-driven lane is arranged on the outer side behind the main parking line; and the crossing diversion area is divided into a central straight crossing are, a corner left turn and right turn cross lane and a concave safety island. When passing is started, a left turn vehicle waiting atthe inner left turn lane is controlled to carry out parallel left shift to the outer left turn lane preferentially and quickly, and then straight, left turn and right turn motor vehicles in the opposite direction can pass without conflict; and when passing is prohibited, a turning vehicle can turn round from a turning area, and a left turn bus can preferentially enter the buffer area.

Description

technical field [0001] The invention belongs to the technical field of urban road traffic planning and traffic control, and in particular relates to a two-phase traffic control method at a level crossing, which can effectively improve the traffic capacity of the crossing and shorten the waiting time. Background technique [0002] The intersection of urban roads is a place where motor vehicles, non-motor vehicles, and pedestrians meet in various directions. The common ones are intersections. There are four types of traffic flow at the entrance of each direction: straight ahead, left turn, right turn, and U-turn. There are 16 types in total. There are a large number of intersection conflict points in motor vehicle flow; there are also a large number of conflict points between non-motor vehicles, pedestrians and motor vehicles; in addition, buses need to pull over, which will increase additional conflict points. When the traffic flow increases to a certain level, the traffic co...

AI Technical Summary

Problems solved by technology

With four phases, the utilization rate of time and space is low: one side passes through one phase, and three phases wait; the adjacent exit of the straight-going phase is basically vacant, and the opposite exit of the left-turning phase is basically vacant, etc.

The four-phase method has a large number of phase switching times, and the switching loss time is long. In order to reduce the switching times, the cycle time is extended, resulting in a decrease in service level.

[0009] These methods either only consider the traffic of motor vehicles, or simply increase the part of pedestrian traffic, without comprehensive consideration to improve the traffic of buses, non-motor vehicles and pedestrians, or even worsen their traffic conditions, making it difficult to implement

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