Method for improving traffic efficiency at plane crossroad

Abstract

The invention provides a method for improving traffic efficiency at a plane crossroad, which belongs to the field of traffic. A crossroad needs four phases to avoid conflicts among traffic flows, and delay occurs in starting of vehicles during switching of the phases; and to reduce influence of the delay, the periods of the phases have to be prolonged, which leads to decrease of a service level. According to the invention, in virtue of adjustment of road markers and traffic lights, a left-turn diverting lane and a bus left-turn diverting lane striding over lanes of two opposite directions are arranged in the entrance of the crossroad; and stop lines and signal lamps are additionally arranged, and through control of the signal lamps, traffic flows from two opposite directions can move for a period of time without conflict. The method eventually has the following effects: the four phases are reduced to two main straight lanes, and a left-turn phase is compressed into a straight lane; the green-time-rate of each traffic flow is improved, wherein the green-time-rate of two straight lanes both approaches 50%, and the green-time-rate of the left-turn phase is up to 25 to 30%; a period is shortened while efficiency is not influenced, and waiting time is reduced; and priority passages for buses are provided so as to facilitate left turning of the buses.

Description

technical field [0001] The invention belongs to the field of traffic and is used for improving the traffic efficiency of level intersections. Background technique [0002] Urban roads are high-density network structures, and generally there are intersections of important roads every three or four hundred meters. Road intersections are divided into level intersections, roundabouts and grade intersections. Due to the shortcomings of large area, high cost, and unsuitability for pedestrians and non-motorized vehicles, interchange intersections are difficult to be widely used in urban roads; and circular intersections are easy to be blocked when traffic flow is heavy, and are not suitable for large-scale applications. At present, it is mainly level intersections, especially level type intersections and T-shaped intersections. [0003] There are four kinds of traffic flows at the entrance of each direction at the level intersection: straight, left turn, right turn, and U-turn. ...

AI Technical Summary

Problems solved by technology

The above measures have improved the ability of motor vehicles to pass through the intersection, but they also have limitations, and even bring new problems, such as widening the intersection will increase the length of the pedestrian crossing; prolonging the phase time will increase the waiting time of vehicles and pedestrians, etc. It will worsen the situation of pedestrians crossing the road, etc., with serious side effects

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