Express way ramp traffic stream mergence guidance method and system based on roadside device

Abstract

The invention discloses an express way ramp traffic stream mergence guidance method and system based on a roadside device. The method comprises that the roadside device acquires the real-time drivingspeed and the real-time position of a traffic stream in the artery of an express way and the real-time driving speed and the real-time position of a traffic stream in the ramp of the express way in real time, and feeds the data back to a monitoring center; when a vehicle reaches a ramp confluence trigger point, the monitoring center finds out an artery merging interval, calculates a condition whether the ramp vehicle can successfully merge with the artery; if a merging condition is satisfied, guides the ramp vehicle to the artery according to a calculation result and monitors the vehicle untilthe vehicle leaves a monitoring range. According to the acquired real-time data, the method provides sufficient clearance for the ramp vehicles to merge with the traffic stream in the artery, provides a driver with the specific merging time and the merging speed that should be reached so as to realize the fast and efficient guidance for the ramp vehicles to merge with the traffic stream in the artery. There is no need for the acquired vehicle to proactively provide information so as to improve the reliability and coverage of the method.

Description

technical field [0001] The invention belongs to the field of intelligent traffic safety control, and in particular relates to a method and system for guiding traffic flow on an expressway ramp. Background technique [0002] With the improvement of the material level and the development of people's needs, the number of cars in the city has shown a rapid growth trend, which has caused increasingly serious traffic congestion and conflicts, resulting in the increasingly low efficiency of expressways. In the morning and evening rush hours when the traffic pressure is relatively high, the congestion in the confluence area of ​​the expressway is particularly serious. The congestion in the merging area not only leads to the failure of the main line traffic flow of the expressway, but also produces an oversaturated traffic flow, which further affects the overall operation of the ground transportation system. It can be seen that proper control of the ramp merge area to prevent the oc...

AI Technical Summary

Problems solved by technology

[0005] 1. Vehicles need to stop before entering the main line from the ramp, which greatly reduces the traffic capacity of the ramp and increases the fuel consumption and emissions of vehicles

[0006] 2. When the vehicle stops and starts at the ramp, there may be phenomena such as slipping and changing lanes, causing collisions between front and rear vehicles and reducing the driving safety of the ramp.

Considering that the Internet of Vehicles has not been popularized today, the methods proposed in this type of research are still very limited in helping practical problems

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