Signal dynamic control technology of junction intersection of expressway exit ramp and local road

Abstract

The invention discloses signal dynamic control technology of a junction intersection of an expressway exit ramp and a local road. The signal dynamic control technology comprises the following steps: data collection: automatically obtaining real-time traffic flow data through video detectors arranged in the exit ramp in an expressway and in a junction intersection area of the exit ramp and the local road, wherein the real-time traffic flow data comprise a vehicle queue length of the exit ramp, and the vehicle queue length, a traffic volume and a vehicle arrival rate of each lane in each drivingdirection of each entrance lane of the junction intersection, and judging the operation condition of the traffic flow of the current junction area at different moments. According to the signal dynamic control technology disclosed by the invention, the signal control of the junction intersection of the expressway exit and the local road is optimized based on video real-time traffic information, sothat the occurrence of the decline of the traffic capacity of the expressway main line caused by the congestion of the junction intersection of the exit ramp and the local road can be prevented moreeffectively, the occurrence of traffic congestion is avoided, the traffic efficiency of the junction area and the expressway is maximized, and the signal dynamic control technology has a wide application range.

Description

technical field [0001] The invention relates to the technical fields of traffic control and intelligent traffic, in particular to a dynamic control technology of signals at intersections where exit ramps of expressways connect with local roads. Background technique [0002] With the rapid increase of expressway construction mileage in my country and the rapid growth of motor vehicle ownership, expressway traffic demand and traffic flow have increased sharply, increasing the pressure on expressway traffic. When the expressway traffic demand exceeds the capacity, the expressway Frequent traffic congestion not only reduces the efficiency of highway traffic, but also increases the conflict and friction between vehicles, which seriously affects the function of infrastructure such as urban roads. Therefore, we should vigorously develop intelligent transportation technology, make full use of high-tech science and technology to coordinate the existing road transportation system and i...

AI Technical Summary

Problems solved by technology

A very important reason for expressway congestion is the unreasonable disposal of the connection area at the exit ramp, which makes it impossible for vehicles on the expressway to leave the expressway smoothly through the exit ramp and evacuate to the adjacent auxiliary road or connection in time In serious cases, it will go back to the main expressway, affecting the normal operation of traffic flow, resulting in a decrease in operating efficiency on the expressway, restricting the effectiveness of the expressway, and reducing the operating quality of the entire road network

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