A Robust Cooperative Collision Warning Algorithm for Unreliable Wireless Communication Channel

In vehicular ad hoc networks (VANET), Inter-Vehicle real-time information access and transfer is the key problem to solving or reducing traffic accidents. It is possible to locate and track a vehicle based on its transmissions, during communication with other vehicles or the road-side infrastructure. On the basis of vehicle active safety technology, this paper proposed a new message broadcast mechanism based on inter-vehicle communication which replaces the original model using ranging sensors to judge the safety of vehicles, by real-time information collection and transmission to inform other vehicles the state of the vehicle neighborhood, and to make risk judgments and warning drivers to effectively prevent accidents.