Expressway traffic flow tracing and ramp regulation and control method combined with historical data

Abstract

The invention provides an expressway traffic flow tracing and ramp regulation and control method combined with historical data, which can automatically and accurately regulate and control the trafficflow of an expressway without manual interference so as to relieve the blockage problem of the expressway and obtain a more accurate traffic regulation and control effect. According to the technical scheme of the invention, the method comprises the steps: obtaining the traffic flow proportion corresponding to each uphill ramp in the traffic flow of a congestion point of a to-be-adjusted road section according to the historical data of the traffic flow of the uphill ramps; and when a flow limiting control scheme is formulated for the uphill ramps, calculating the number of released vehicles ofeach uphill ramp and the duration time of the green light and the red light in the next control period of the to-be-adjusted road section according to the traffic flow proportion corresponding to eachuphill ramp.

Description

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

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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