Method and system for transmitting and receiving warning message

The present invention relates to a warning message transmission method and system in a hazardous situation which occurs on the road so as to promptly inform the neighbor hops, using the vehicle-to-vehicle distance and the vehicle status information in the road and the generation of the external danger more than one relay to be transmitted by selecting a vehicle and increase a warning message sequence number to generate a warning message including the identifier and the re-transmission time of the relay vehicle is characterized. Thus, it can be resolved propagation delay of the warning message by the invention by the vehicle selected as a relay vehicle to quickly deliver a warning message to neighboring hop, and even when an incident occurs in the tunnel, so casualties caused by rear-end collision accident to be reduced. Transit vehicles, danger, warning messages, broadcast