Regional short range synchronous road control method

Abstract

The invention discloses a regional short range synchronous road control method. The method comprises the following steps of: investigating the traffic flow and facility status of a road, classifying the road into a smooth road, a crowded road and an obstructed road, drawing a road running status distribution map based on an investigation result, determining boundary zones among different crowded regions and partitioning the road into a plurality of regions; and adopting the same timing scheme on signal lamps at all intersections in each region and turning on green lamps synchronously in the same flow direction for permitting passing and turning off the green lamps synchronously for forbidding passing. In a regional signal lamp timing scheme, the period length of a key intersection is taken as a regional signal lamp timing period length, and a split green ratio of intersecting directions of regional signal lamp timing is determined according to the maximum flow ratio of intersecting directions. Through the method, traffic flow in intersecting directions in a region can continuously pass through a plurality of intersections in a period without consideration of the demands and reach distribution characteristics of traffic flows in different directions in a road network, parking possibility of vehicles in intersections in a busy hour can be decreased effectively, and delay is reduced.

Description

technical field [0001] The invention belongs to the field of urban road traffic control, in particular to a road sub-area short-range synchronous control method. Background technique [0002] Road intersections are the main conflict points of urban traffic flow. A large number of survey and analysis data show that 40% to 60% of urban traffic travel delays occur at intersections. It is very important to reasonably resolve traffic flow conflicts at intersections and improve operational efficiency. Therefore, intersection signal light control occupies an important position in the field of urban road traffic control management. [0003] The early intersection signal lights were controlled by a single-point, fixed timing method, and the purpose of safely guiding vehicles at the intersection was achieved by separating the time of traffic rights in different directions. Although this control method played an important role in the early urban traffic control, its disadvantages are ...

AI Technical Summary

Problems solved by technology

However, during the promotion and use of the system, people gradually discovered that the effect of the existing regional coordinated control on improving network operation efficiency almost disappeared during the peak congestion period, and the entire system degenerated into a single-point control system at this time.

[0005] After analysis, it is found that the existing surface control methods are difficult to adapt to the situation that the traffic demand in the intersection direction of the ground road network is in a peak state. It is necessary to study the surface control method and system that can adapt to the high traffic demand in different directions.

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