Supersaturated intersection entrance traffic capacity design method based on traffic demand

Abstract

The invention provides a supersaturated intersection entrance traffic capacity design method based on the traffic demand. The traffic demand of the supersaturated intersection can be automatically calculated, the traffic capacity of the supersaturated intersection can be adjusted, and the accuracy of road intersection traffic control and the overall operation efficiency can be improved. In the technical scheme of the invention, the method comprises the following steps: acquiring a supersaturation problem occurring time period of a target intersection, wherein the result is used as an investigation period during import traffic flow accumulation; using a signal timing period of a target intersection as an acquisition period; acquiring actual data of queuing vehicles and passing vehicles; andcalculating an actual running traffic capacity value T of the intersection entrance peak period based on the actual vehicle data, calculating an intersection entrance traffic demand investigation quantity D, calculating an entrance traffic capacity design multiplication coefficient through T and D, and taking the coefficient as an auxiliary parameter for adjusting the intersection traffic capacity.

Description

technical field [0001] The invention relates to the technical field of intelligent traffic control, in particular to a design method for traffic capacity at an oversaturated intersection entrance based on traffic demand. Background technique [0002] Traffic capacity is a physical quantity that measures the ability of a road to guide vehicles or people, and is a performance of the road itself. Traffic capacity specifically refers to the maximum number of traffic entities that can pass through a certain section of the road or intersection within a unit of time under certain road, traffic, and environmental conditions. The unit is: vehicle / h or person / h. [0003] At this stage, when designing the capacity of intersection entrances, the method adopted is to conduct preliminary estimation in connection with the road space limit of the intersection and the signal timing scheme, and then carry out dynamic inspection optimization in combination with the traffic flow characteristic...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the traffic problems caused by the oversaturation of intersections in the existing technology, it relies too much on manual experience to solve the problem that the adjustment of traffic capacity at intersections cannot accurately match the real-time changes in traffic demand and the implementation efficiency is low. , the present invention provides a traffic demand-based design method for oversaturated intersection entrance capacity, which can automatically calculate the traffic demand for oversaturated intersections, adjust the capacity of oversaturated intersections, and improve the accuracy of traffic control at road intersections and overall operating efficiency

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