Curved road safe speed calculating method and caution system based on vehicle infrastructure cooperation

Abstract

The invention discloses a curved road safe speed calculating method and caution system based on vehicle infrastructure cooperation. The method includes the following steps of calculating the sideslip critical speed of a vehicle; calculating the rollover critical speed of the vehicle; comparing the small values of the two critical speeds and determining the safe speed when the vehicle runs into the curve; and calculating the safe vehicle speed when the vehicle runs into the curve after considering the behavior characteristics of a driver. The invention provides a method for accurately calculating the safe vehicle speed when the vehicle runs into the curve on the basis of fully considering the influences of people, vehicles and roads. Through the comprehensive considering of the vehicle motion characteristics and driver behavior characteristics, the safe vehicle speed of the vehicle at the curved road is analyzed by means of a vehicle dynamics theory. The method has the advantages of simple calculation, fast operation speed, and high reliability, and provides the theoretical method support for the design and development of a curved road safe driving caution system.

Description

technical field [0001] The invention relates to the technical field of traffic safety, in particular to a method for calculating a safe vehicle speed on a curve and a warning system based on vehicle-road coordination. Background technique [0002] The vehicle-road coordination system is based on advanced sensing and wireless communication technologies, realizes real-time dynamic interaction of vehicle and vehicle-road information, and completes the collection and fusion of traffic information, thereby ensuring vehicle driving safety in complex traffic environments and improving road network operation. Efficient next-generation intelligent transportation system technology. The two main subsystems of the vehicle-road coordination system are the roadside unit and the vehicle-mounted unit. Through the roadside unit and the vehicle-mounted unit, each traffic component realizes vehicle-to-vehicle, vehicle-to-roadside, and road-to-road communication through wired or wireless commun...

AI Technical Summary

Problems solved by technology

According to the statistical analysis of road traffic accidents, it is shown that the curved road section is an area where traffic accidents frequently occur. Drivers often cause traffic accidents due to speeding and entering the bend, resulting in loss of control of the vehicle, resulting in major economic and property losses.

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