Traffic overflow inhibition method based on high altitude video information

Abstract

The invention relates to a traffic overflow inhibition method based on high altitude video information. Compared with the prior art, the traffic overflow inhibition method based on the high altitude video information overcomes the defect that no automation inhibition method for solving the problem of traffic overflow exists in the prior art. The traffic overflow inhibition method based on the high altitude video information includes following steps: erecting a high altitude camera, and communicating the camera and a signal controller with an information center through a wired network or a wireless network; performing distance calibration on a camera image and actual distance of a road; setting overflow queuing length threshold value; calculating saturation flow and traffic capacity of a lane; calculating the maximum queuing length and saturation in each signal cycle of the lane; judging out a mapping relation of average increasing velocity and the saturation of the queuing length; forecasting a cycle reaching the overflow length threshold value; adjusting matching time of upstream and downstream signal lamps. The traffic overflow inhibition method based on the high altitude video information can grasp increasing and dissipating rules of the queuing length before the traffic overflow occurs, and forecasts an occurring cycle of the traffic overflow.

Description

technical field [0001] The invention relates to a traffic control technology method, in particular to a traffic overflow suppression method based on high-altitude video information. Background technique [0002] With the continuous development of social economy, the number of cars in contemporary Chinese cities continues to rise, and the problem of traffic congestion is becoming more and more serious. Among many manifestations of traffic congestion, traffic overflow phenomenon is a more serious one. Traffic overflow refers to the unfavorable factors such as road planning and design, unreasonable traffic signal timing, etc., resulting in the cumulative queue length in a certain driving direction in adjacent intersections being greater than the length of the road section between adjacent intersections. If it is not prevented and controlled, the traffic overflow phenomenon will spread to the upstream direction of the driving direction, and the vehicles at the intersection will...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the defect that there is no automatic suppression method for traffic overflow in the prior art, and provide a traffic overflow suppression method based on high-altitude video information to solve the above problems

Images