A method for prevention and control of queuing overflow at intersections with oversaturated traffic flow

Abstract

The invention relates to the field of urban traffic signal control, especially relates to a supersaturated traffic flow intersection queue overflow prevention and control method. Aimed at the problem of traffic flow queue overflow constantly occurring during peak hours in urban regions such as main urban districts in the city and central business districts where the distance among intersections is short and the traffic flow is high, the invention controls of the traffic flow at an entrance road section and an exit road section through traffic signals, thereby achieving the closure and diversion of traffic flow; and starts with the control of the capacity of the traffic flow of a road section, to prevent the intersection traffic flow queue overflow.

Description

technical field [0001] The invention relates to the field of urban traffic signal control, and relates to a method for preventing and controlling queuing overflow at an intersection with oversaturated traffic flow. [0002] technical background [0003] With the rapid development of my country's social economy and the continuous acceleration of urbanization, the city's social, economic, cultural, life, production and other activities have become increasingly frequent, the demand for urban road traffic has grown rapidly, and the excessive growth of urban motor vehicle ownership has made urban roads Space is overwhelming. At the same time, due to the untimely update of road traffic management and control technologies, means, and facilities, the contradiction between urban road traffic demand and traffic supply has become increasingly prominent, and urban road traffic congestion and congestion have increasingly become the main problems of urban traffic. Traffic safety, environme...

AI Technical Summary

Problems solved by technology

At the same time, due to the untimely update of road traffic management and control technologies, means, and facilities, the contradiction between urban road traffic demand and traffic supply has become increasingly prominent, and urban road traffic congestion and congestion have increasingly become the main problems of urban traffic. Traffic safety, environmental pollution, economic loss and other issues have become the main factors hindering the rapid and sustainable development of urban social economy

[0004] During the traffic peak period, especially in urban areas such as the main urban area and the central business district of the city, due to the short intersection distance and large traffic flow, the queued traffic flow at the upstream intersection often overflows to the upstream intersection. The signal lacks an effective coordination and timely adjustment mechanism, and the overflowing traffic flow cannot be effectively suppressed and evacuated in a timely manner, which makes the overflowing traffic flow block the traffic flow of other traffic directions at the upstream intersection through the intersection, resulting in traffic flow at the intersection. The chaotic and intertwined situation seriously reduces the traffic capacity of the intersection, causing the traffic congestion to rapidly expand to the surrounding areas, resulting in large-scale traffic congestion and congestion

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