Fast evacuation method for main road traffic flow under vehicle networking based on macroscopic fundamental diagram

Abstract

The invention discloses a fast evacuation method for main road traffic flow under vehicle networking based on the macroscopic fundamental diagram. The method includes the steps: S1, collecting traffic data of the urban central region road network within a certain period of time; S2, creating a macroscopic fundamental diagram model based on traffic data acquired in the step S1; S3, determining maximum weighted traffic and critical vehicle number of the region road network according to the macroscopic fundamental diagram model; S4, judging the actual vehicle number and the actual weighted traffic of the region road network, and performing networking evacuation on main road vehicles and networking guide on vehicles outside the region road network according to the relation among the actual vehicle number, the actual weighted traffic, the critical vehicle number and the maximum weighted traffic. The method can guide and regulate the vehicles outside the central region road network, the traffic evacuation and regulation process in the central region road network is also elaborated in details, and operability and feasibility are higher, and the effect of slowing the congestion is obvious.

Description

technical field [0001] The invention belongs to the field of urban traffic management and control, and in particular relates to a method for fast dredging traffic flow of a main channel based on a macro basic map under the Internet of Vehicles. Background technique [0002] With the rapid development of social economy, the number of cars has increased sharply, and the problem of urban traffic congestion has become worse, which has become one of the bottlenecks of urban development. In order to reduce vehicle delay time and queuing length, and alleviate traffic congestion, some large cities have adopted advanced traffic control technologies and implemented intelligent traffic signal control systems. However, as the traffic flow continues to increase, the traffic in some cities has become oversaturated, and the effect of the original traffic control system is not obvious. [0003] Recently, two scholars, Daganzo and Geroliminis, studied a large amount of actual traffic data a...

AI Technical Summary

Problems solved by technology

Although the patent can combine traffic control and traffic guidance to regulate traffic flow based on the macro basic map, the regulation technology is too macroscopic. It only focuses on regulating and slowing down the surrounding vehicles to protect the area and only mentions extending the green light to increase the traffic discharge in the protection area, while There is no specific research on how to regulate and reduce traffic congestion in the guaranteed area. The practicality and feasibility are not enough, and the synergy between vehicles and roads is not obvious. There are not many applications of Internet of Vehicles technology, and car owners know their own information or road conditions. little information

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