Vehicle and road collaborative information-based signalized intersection vehicle speed guidance system and method

Abstract

The invention provides a vehicle and road collaborative information-based signalized intersection vehicle speed guidance system, which comprises an information communication module, an information acquisition and processing module, a vehicle speed guidance and suggestion module and a vehicle safety early-warning module. The information acquisition and processing module is used for acquiring the information of a vehicle through the acquisition and processing process of the combination of a GPS and an INS. The information acquisition and processing module is also used for acquiring the information of a preceding vehicle and the signal state information of an annunciator via the information communication module. By means of the vehicle speed guidance and suggestion module, after the entrance of the above vehicle into a guidance range, whether the vehicle is within the range of lane-changing-allowable road segments or not is judged based on the vehicle information within the guidance range and the signal state information of the annunciator. Meanwhile, the vehicle speed guidance and suggestion module provides a vehicle speed guidance suggestion and a driving lane suggestion to the vehicle. The vehicle safety early-warning module calculates a safety margin value between two vehicles according to the information of the vehicle and the information of the preceding vehicle, and then judges the collision risk state of the vehicle according to the safety margin value. According to the invention, the real-time position of the vehicle, the real-time speed of the vehicle and the mutual influence among vehicles are fully contemplated. In this way, when the vehicle passes through a signalized intersection, the stop delay of the vehicle is reduced. Therefore, the traffic efficiency of roads is improved and the environmental pollution is reduced.

Description

technical field [0001] The invention relates to the field of intelligent transportation, in particular to a signal-controlled intersection vehicle speed guidance system and method based on vehicle-road coordination. Background technique [0002] In the existing traffic signal control system, there is a lack of data interaction between vehicles and between vehicles and signal control equipment, resulting in the switching time of red lights and green lights being random for drivers, and it is difficult to predict when they arrive at the next intersection. Therefore, it is impossible to optimize and adjust the vehicle speed in advance, which has an adverse effect on the traffic efficiency and safety of the intersection. [0003] In response to the above problems, researchers at home and abroad have proposed a single-vehicle speed guidance method based on vehicle-road coordination, which has achieved certain results in improving intersection traffic efficiency and reducing inter...

AI Technical Summary

Problems solved by technology

Although the existing single-vehicle speed guidance method based on vehicle-road coordination strengthens the interaction between the driver and the signal machine, it ignores the influence of the interaction between the front and rear vehicles on the driving state, so its effect in practical applications is not good.

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