A variable speed limit control method for expressway based on vehicle-road coordination

Abstract

The invention discloses an expressway variable speed limit control method based on vehicle and road cooperation. According to the method, the limit value of an expressway is adjusted in real time through cooperative control of a vehicle and road side information board and a control center so that the road traffic accident rate can be reduced and road traffic safety can be enhanced. The method comprises the following steps that vehicle speed and position information is detected, variable speed limit control is started, variable speed limit information is released and vehicle speed is controlled. The method is easy to design and easy to calculate. The defects of existing variable speed limit control can be overcome through vehicle and road cooperative control so that the road traffic accidents can be reduced, and traffic safety of the expressway can be effectively enhanced. The variable speed limit control method based on vehicle and road cooperation has quite practical engineering application value in the aspect of expressway traffic management and control.

Description

technical field [0001] The invention belongs to the technical field of intelligent traffic management and control, in particular to a variable speed limit control method for express roads based on vehicle-road coordination. Background technique [0002] With the improvement of people's living standards, the number of cars in our country is increasing day by day. According to relevant data from the Ministry of Public Security, by the end of 2012, the number of motor vehicles in my country has reached 240 million, and the number of motor vehicle drivers has reached 260 million, and it continues to grow. The rapid increase of motor vehicles has brought huge traffic pressure, and has also had a great impact on traffic safety. Statistics show that in 2010 alone, there were 210,821 traffic accidents across the country, causing as many as 65,000 deaths. Among many accidents, speeding and rear-end collisions of express road vehicles account for a large proportion, which have brough...

AI Technical Summary

Problems solved by technology

However, there are two obvious defects in the existing control methods. First, the existing speed limit control is based on road section detectors to detect traffic flow data, which requires laying a large number of detectors on the expressway, which is not only expensive, inconvenient to maintain, but also easy to damage the road surface. damage; secondly, the existing variable speed limit control method releases visual speed limit information through speed limit signs, and there are often phenomena that drivers do not perceive the dynamic speed limit information in time or do not comply with the speed limit requirements. Speed ​​limit control effect is difficult to guarantee

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