A Control Method of Traffic Flow Time at Road Nodes Based on Traffic Fluctuation Theory

Abstract

The present invention provides a method for controlling the traffic flow time of road nodes based on the traffic fluctuation theory, comprising the steps of: S1: the calculation model of the average vehicle speed of the downstream intersection established according to the traffic fluctuation theory; S2: real-time collection of two adjacent intersections The length L of the target road section between the intersections and the intersection length D of the downstream intersection; S3: Collect the vehicle speed information of the target road section between two adjacent intersections in real time, and calculate the average vehicle speed v of the target road section 1 ; S4: Calculate the average vehicle speed v at the downstream intersection of the target section 2 ; S5: Calculate the actual travel time t of the traffic flow on the target road section 0 and the maximum transit time of traffic flow t m ; S6: judge t 0 <t m Whether it is established, if not established, then adjust the traffic flow time of the target road section; the present invention avoids the overflow of the target road section vehicle flow to the upstream intersection, reduces the time cost and fuel cost caused by congestion, and improves the traffic efficiency of urban roads.

Description

technical field [0001] The invention relates to the traffic field, in particular to a method for controlling the travel time of road node traffic flow based on traffic fluctuation theory. Background technique [0002] With the development of society, the number of cars has gradually increased. However, the increase in the number of roads used for driving cars is far behind the increase in car ownership, which has caused increasingly serious congestion in modern urban roads. However, urban roads Another problem of congestion is that the traffic flow time of road nodes has not been reasonably controlled. This is because there are many intersections in the city, and the driving speed of the road section between adjacent intersections is different from that at the intersection. In the same way, the driving speed at the intersection is often lower than that of the section between adjacent intersections. If the traffic flow time of road nodes is not controlled, it will cause the v...

AI Technical Summary

Problems solved by technology

[0002] With the development of society, the number of cars has gradually increased. However, the increase in the number of roads used for driving cars is far less than the increase in car ownership. This has caused the congestion of modern urban roads to become increasingly serious. However, urban roads Another problem of congestion is that the traffic flow time of road nodes has not been reasonably controlled. This is because there are many intersections in the city, and the driving speed of the road section between adjacent intersections is different from that at the intersection. Similarly, the driving speed at the intersection is often lower than that of the road section between adjacent intersections. If the traffic flow time of road nodes is not controlled, it will cause the vehicles at the downstream intersection to overflow to the upstream, resulting in serious congestion. , in the prior art, there is no effective means to solve the above technical problems

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