The establishment of vehicle anti-collision warning system in the environment of V2V can enable drivers to obtain the driving information and pavement condition information of other vehicles beyond visual range. The safety distance model is the core of the early warning system. In this paper, a more reasonable safety distance model is established according to the different states of the leading vehicle (stationary, uniform speed, uniform acceleration and uniform deceleration), considering the driver factors, road conditions, information delay and positioning error. Finally, the paper builds a vehicle anti-collision warning system for simulation test, the simulation results show that: Without the influence of other factors, the safety distance required under dry asphalt pavement is the lowest. When the leading vehicle decelerates at 60 km/h, the safety distance curve of wet asphalt pavement increases sharply while the speed of the following vehicle is greater than 95 km/h, for snowy pavement, the critical speed is 80 km/h; In the performance test of warning system, the false alarm rate is kept at a relatively low level during uniform speed, uniform acceleration and uniform deceleration. The reliability of the system meets the requirements.

CICTP