Patent ID: 8223037

Claim:
A method for warning of emergency vehicles in emergency service, in which emergency vehicles use vehicle-to-vehicle communication to transmit warning messages which are received by an other vehicle and are indicated to a driver of the other vehicle, the method including the steps of: transmitting, by the emergency vehicle, a warning message including a position of the emergency vehicle to the other vehicle, wherein in response to receiving the warning message and when the other vehicle is configured to perform map matching, the other vehicle performs map matching and indicates to the driver the position of the emergency vehicle relative to a position of the other vehicle, and wherein in response to receiving the warning message and when the other vehicle is not configured to perform map matching, the other vehicle transmits the position of the other vehicle to the emergency vehicle, the emergency vehicle performs map matching and transmits the position of the emergency vehicle relative to the position of the other vehicle, and the other vehicle indicates to the driver the position of the emergency vehicle relative to the position of the other vehicle.