Method of improving traffic efficiency of grade intersection

Abstract

A method to improve traffic efficiency at intersections, which comprehensively considers the traffic of four common traffic elements in urban traffic, public vehicles, non-motorized vehicles, and pedestrians, and divides road sections into ordinary driving sections, internal diversion sections, and left-turning sections. There are four functional sections: the intersection section and the intersection diversion section. The intersection is divided into four parts: the intersection area of ​​left and right turning lanes at the corner, the intersection area of ​​central motor vehicle lanes, the non-motor vehicle passage area, and the pedestrian passage area. The traffic conflict at the intersection is decomposed into the central traffic conflict point of the intersection, the corner traffic conflict point, the internal conflict point of the road section, etc. Each serious conflict point is solved by two phases, and the phase time of different intersections overlaps as much as possible to realize the traffic flow in all directions as much as possible. Non-motor vehicles and pedestrians can pass at the same time without conflict, so as to achieve the purpose of improving traffic capacity, reducing waiting time and improving service quality.

Description

technical field [0001] The invention belongs to the technical field of transportation. Background technique [0002] The main bottleneck of urban road congestion is at the intersection. This is because an intersection is a place where motor vehicles, non-motor vehicles, and pedestrians meet in various directions. Commonly, such as an intersection, there are four kinds of traffic flows at the entrance of each direction: left turn, right turn, straight line, and U-turn. Motor vehicle crossing conflict situation. There are also buses that will increase additional conflict points due to parking at each stop. The conflict between motor vehicles, non-motor vehicles and pedestrians at intersections is very complicated, and there are many conflict points. Many intersections can only allow non-motor vehicles and pedestrians to mix. And when the traffic flow increases to a certain level, conflicts must be avoided at the intersection, otherwise the traffic capacity will decrease sha...

AI Technical Summary

Problems solved by technology

The four-phase method has more phase switching times, and the switching loss in a fixed period will be more

In urban traffic, various traffic elements interact with each other. For example, the time for pedestrians to pass through the crosswalk at an intersection is one of the basic times for phase design at intersections. If the problem of pedestrian passage time is not solved, the cycle time cannot be reduced. Motor vehicles Service level is also difficult to improve

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