Method and system for merging vehicles on high-saturation ramps based on roadside equipment

Abstract

The invention discloses a method and system for high-saturation ramp vehicle confluence guidance based on roadside equipment. According to the method, roadside equipment collects real-time driving speeds and real-time positions of a main line flow and a ramp flow of an express way in real time and feeds back the real-time driving speeds and real-time positions to a monitoring center; when a vehicle enters a ramp confluence trigger point, the monitoring center processes the information, a main line confluence interval is selected based on a confluence coefficient, and a main line vehicle deceleration value, a ramp vehicle acceleration value, and acceleration time that are needed by meeting a successful confluence condition are calculated; and according to calculation results, an instructionis sent to guide a ramp vehicle to join in the main line. According to the invention, a confluence interface is made actively when the main line flow density is too large and specific confluence timeand vehicle speeds needed by confluence are provided for the mainline and ramp drivers, so that confluence guidance is realized quickly and efficiently; and the location of the ramp confluence trigger point can be adjusted in real time, so that successful confluence of the ramp vehicle under different conditions is ensured and thus the safety and reliability are improved.

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 vehicles on an expressway ramp. Background technique [0002] With the improvement of the material level and the development of people's needs, urban transportation has become more and more convenient, a large part of which is due to the rapid increase in the number of cars. But it also brought serious traffic congestion and conflicts. 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 occurre...

AI Technical Summary

Problems solved by technology

These methods do not take into account that when the saturation of the expressway is large, the interval between vehicles is maintained at a small distance, and there may not be a ready-made merging interval in the mainline traffic flow

And this kind of high-saturation road is most likely to be affected by the forcible merging of on-ramp vehicles and form serious traffic conflicts and congestion.

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