A traffic flow traceability and ramp control method for expressways combined with historical data

Abstract

The present invention provides an expressway traffic flow traceability and ramp control method combined with historical data, which can automatically and accurately control the traffic flow of the expressway without manual intervention, thereby alleviating the congestion problem of the expressway and obtaining more accurate traffic regulation effect. In the technical solution of the present invention, according to the historical data of the traffic flow of the upstream ramp, the proportion of traffic flow corresponding to each upstream ramp in the traffic flow of the congestion point of the road section to be adjusted is obtained; when formulating the current limiting control scheme for the upstream ramp , according to the proportion of traffic flow corresponding to each up-ramp, calculate the number of released vehicles for each up-ramp, and the duration of green and red lights in the next control cycle of the section to be adjusted.

Description

technical field [0001] The invention relates to the technical field of intelligent traffic control, in particular to a method for tracing the source of expressway traffic flow and ramp regulation combined with historical data. Background technique [0002] Urban expressway is a large-capacity trunk road in the urban road network that bears the long-distance traffic demand, and its traffic efficiency will affect the traffic operation efficiency of the entire city. In recent years, the demand for expressway traffic in major cities has grown rapidly, and some main line sections are often congested or blocked due to the large inflow of on-ramp traffic. The root cause of traffic congestion on expressways is that the demand exceeds the supply and forms a bottleneck point. Under the condition of a certain traffic capacity, in the prior art, the inflow of vehicles is adjusted by controlling the upstream ramp, thereby preventing the main line traffic flow from being in an oversatura...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that in the prior art, the traffic flow of the upstream ramp can only be manually controlled to solve the problem of expressway congestion, and precise regulation cannot be achieved. The present invention provides a method for traceability of expressway traffic flow and ramp regulation combined with historical data It can automatically and accurately control the traffic flow of the expressway without manual intervention, thereby alleviating the congestion problem of the expressway and achieving more accurate traffic control effects

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