The invention discloses an automobile rear-end
collision prevention early warning method and
system. The
system comprises a
wireless communication dedicated short range communication (DSRC) device arranged at a roadside, and a vehicle-mounted
wireless communication device, a
data acquisition unit and a vehicle-mounted terminal which are installed on a vehicle, wherein the
data acquisition unit is internally provided with a
data acquisition module, a GPS module and an acceleration sensor. Through the DSRC device,
wireless communication interaction between vehicles and between vehicles and roads is realized. The vehicle-mounted terminal calculates a safety distance between a vehicle and a front vehicle by use of a minimum safety
distance model based on vehicle-road cooperation, an actual distance between the vehicle and the front vehicle is calculated through position information, whether a read-end
collision risk exists is determined, if the read-end
collision risk exists, a risk prompt is displayed on an interface of the vehicle-mounted terminal, and an alarm is given through sound. According to the invention, the cost of the read-end
collision prevention early warning system is reduced, and the early warning accuracy is improved. The
system has the advantages of low cost, small volume, accurate early warning and the like, thereby being applied to various road conditions.