Vehicular speed control method for approach road at arterial intersection based on vehicle-road coordination

Abstract

The invention discloses a main road intersection entrance lane vehicle speed control method based on cooperative vehicle infrastructure. The method comprises the steps that by means of a roadside information acquisition and processing module, whether a vehicle passes a stop line or not is calculated according to the distance between the vehicle and a main road intersection, a current running speed and acceleration, and the roadside information acquisition and processing module feeds back a calculation result to a vehicle-mounted information acquisition and processing module and conduct operating recommendation. According to the main road intersection entrance lane vehicle speed control method based on the cooperative vehicle infrastructure, by combining the vehicle-mounted information acquisition and processing module, the roadside information acquisition and processing module, an information communication module, a vehicle speed control recommendation module and a front and back vehicle safe distance warning module, information interaction between vehicles and between the vehicles and roads is achieved, the remaining time of green lights at the intersection, vehicle position, vehicle running state and weather information are integrated, and therefore the running speed of the vehicle is controlled and prompted, and safety warning is conducted on the distance between the front vehicle and the back vehicle; the traffic operation efficiency of the intersection can be improved conveniently, traffic accidents and meaningless accelerations are reduced, it is guaranteed that the vehicles run safely, oil consumption is reduced, and the environment is protected.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a method for controlling vehicle speed at an approach road at an intersection of a main road based on vehicle-road coordination. Background technique [0002] At the intersection of urban arterial roads, due to the large traffic flow, poor visibility of road markings, long traffic signal cycle, and short green light phase time, vehicles often change lanes and change lanes temporarily when they approach the intersection stop line, and vehicles The reason for speeding up the yellow light, or even speeding up the red light, is that the vehicle is at the entrance of the main road intersection, and the information on the remaining time of the green light and the running status of the own vehicle is not enough, and the above-mentioned traffic violations are caused by reckless driving , causing serious harm to road traffic safety. [0003] Chinese patent document CN1...

AI Technical Summary

Problems solved by technology

However, this method does not consider the impact of the remaining time of the green light on the driving behavior of the vehicle, and does not consider the classification of vehicles in different operating states. In addition, the impact of different weather conditions on the safety distance of vehicles is ignored, and the range of vehicle speed guidance needs to be further refined.

[0004] Due to the functional division of the entrance road at the intersection of the main road, the remaining time of the green light, the running state of the vehicle, and the weather conditions, all of which will have an impact on the driving behavior of the vehicle at the intersection. In addition, if the vehicle is not classified, the control of the vehicle speed It is difficult to refine, which is not conducive to the speed control and early warning at the intersection

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