Patent ID: 7633407

Claim:
A vehicle communication device to be mounted on one vehicle provided with a plurality of vehicle detection devices for detecting other vehicles, comprising: a communication device for transmitting information to the detected other vehicles and receiving information from the other vehicles; an output device for outputting the received information; and a control unit for performing the operations of: obtaining a piece of information containing information regarding a driving operation; detecting a circumstance of the one vehicle corresponding to the obtained piece of the information, based on a table previously relating the circumstances of the one vehicle to the obtained pieces of the information; determining at least one of the plurality of the vehicle detection devices corresponding to the detected circumstance, based on a table previously relating the respective vehicle detection devices each of which faces in each direction to recognize presence or absence of the other vehicles, to the detected circumstances of the one vehicle; detecting vehicle identification information of the other vehicle to/from which the information is transmitted/received by the communication device, based on vehicle detection information obtained as a result of detection by the determined at least one of the plurality of the vehicle detection devices; and determining a piece of the notification information to be notified to the other vehicle, the piece of the notification information being in accordance with the detected circumstance, based on a table previously relating the pieces of notification information to be notified to the other vehicle, to the detected circumstances of the one vehicle, wherein the communication device transmits the determined piece of the notification information to the other vehicle, regarding the detected vehicle identification information as a communication identifier of the other destination vehicle.