A vehicle speed control system and method in a ramp merge area

Abstract

The invention discloses a vehicle speed control system and method in a ramp merge area, which belongs to the field of road traffic control, and includes a vehicle-mounted communication device and a roadside control unit. The vehicle-mounted communication device is used to collect vehicle movement information and send it to the roadside unit , the roadside unit receives the information of all vehicles in the control area, centralizes decision-making, uses the vehicle time control method in the area to conduct unified management and control of the time when vehicles arrive at the merging point, and then uses the vehicle behavior optimization control method to form according to the time control requirements. The vehicle behavior control law in the area, and then send this control rate to each vehicle, and each vehicle implements the control rate it receives so that it can reach the merging point on time. The invention utilizes the vehicle-road centralized communication technology, and realizes efficient, low-fuel-consumption, and high-comfort vehicle merging in the ramp area by controlling the vehicle merging time control in the control area and optimizing the vehicle merging behavior.

Description

Technical field [0001] The invention belongs to the field of road traffic, and relates to a vehicle speed control system and method in a ramp junction area. Background technique [0002] Approximately 30% of traffic accidents in China each year occur in the highway ramp area, and the main cause is the traffic disturbance caused by the inbound vehicles in the ramp junction area. The traffic control problem in the area where the ramp merges and diverges is also receiving more and more attention. Currently, vehicle control in the ramp junction area mainly relies on traffic lights and other controls. This method is simple and can only control vehicle traffic, but cannot control vehicle speed. It is difficult to solve the problems of high vehicle collision risk, low merge efficiency and high fuel consumption in the ramp junction area. With the development of communication technology, the Internet of Vehicles technology has brought a new direction for vehicle control in the ramp junct...

AI Technical Summary

Problems solved by technology

At present, vehicle control in the ramp merging area mainly relies on traffic lights and other controls. This method is simple and can only control the passage of vehicles, but not the speed of vehicles. It is difficult to solve the problems of high collision risk, low merging efficiency, and high fuel consumption in the ramp merging area.

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