A roadside equipment-based method and system for guiding traffic flow on an expressway ramp

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 a system for guiding vehicle flow on an expressway ramp. Background technique

[0002] With the improvement of material level and the development of people's needs, the number of cars in the city shows a trend of rapid growth, which leads to increasingly serious traffic congestion and conflicts, resulting in the increasingly low efficiency of expressway traffic. In the morning and evening rush hour when the traffic pressure is high, the congestion in the expressway confluence area is particularly serious. Congestion in the merging area not only leads to the failure of the traffic flow of the expressway main line, but also produces supersaturated traffic flow, which further affects the overall operation of the ground transportation system. It can be seen that proper control of the merging area of ​​the ramp to prevent the occurrence of co...

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