| 摘要 |
PROBLEM TO BE SOLVED: To provide an automobile-to-automobile communication system allowing occupants of a vehicle to know the location of a traffic accident ahead, to see how many vehicles there are behind the vehicle where the accident has occurred. SOLUTION: An electronic control unit 3 of an automobile B, upon receiving an emergency signal from another automobile A, determines that an accident has occurred, and then adds an accident occurrence signal to a vehicle number obtained by adding 1 to the vehicle number of the emergency signal received (S220). The accident occurrence signals added are sent as emergency signals from an antenna through a Bluetooth wireless device at predetermined time intervals (S230). Thus, the emergency signals are relayed by the communication device of the automobile B and the vehicle numbers are added together at each relaying. The electronic control unit 3 of an automobile C, upon receiving the emergency signal received by the communication device of the automobile B (S200), lets the occupants know the location of the traffic accident, that is, how many vehicles there are behind the automobile where the accident has occurred (S210).
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