A flow limiting method and device for expressway toll stations

Abstract

The embodiment of the invention provides a traffic flow limiting method and device of an expressway toll station. The traffic flow limiting method comprises the following steps: firstly, determining a bottleneck road section; secondly, determining a traffic accident influence range according to detection data of the bottleneck road section; determining a first traffic flow according to the traffic accident influence range and traffic trip volume OD data of each road section in a road network; determining a controllable traffic flow of a flow control toll station according to the first traffic flow and a traffic capacity of the bottleneck road section; finally, controlling vehicles entering the flow control toll station according to the controllable traffic flow. According to the traffic flow limiting method and device of the expressway toll station, provided by the embodiment of the invention, after traffic accidents occur, the traffic flow of the influenced road section cannot be controlled but the traffic flow of the flow control toll station is controllable, so that the maximum traffic flow which needs to be controlled by the flow control toll station and enters the bottleneck road section is determined according to the traffic capacity of the bottleneck road section and the first traffic flow; each flow control toll station is controlled according to the maximum traffic flow, so that congestion generation and spreading are prevented when the traffic accidents occur on an expressway.

Description

technical field [0001] The embodiments of the present invention relate to the field of intelligent transportation, and in particular to a method and device for limiting traffic at expressway toll stations. Background technique [0002] Expressway is an important link between regions and a necessary foundation to ensure the transportation of national materials and meet the needs of public transportation. Due to the closure of the expressway and the separation of vehicles at high speed, once an abnormal event occurs, it will be difficult for other vehicles to turn around, divert and evacuate if they continue to drive in. Not only will it cause delays in public travel and increase travel time, it will also cause local traffic interruptions, which will have a greater impact on regional road network traffic. Therefore, when an abnormal event occurs on the expressway, what kind of intelligent current limiting scheme should be adopted to prevent the generation and propagation of c...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a method and device for limiting traffic at expressway toll stations, which are used to solve the problem in the prior art that the traffic flow within the range affected by the event cannot be controlled when the expressway is abnormal.

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