An apparatus includes: a vehicle information acquiring unit 10 to obtain the vehicle information about a vehicle state of its own vehicle; a cloud communication unit 11 to transmit the vehicle information obtained by the vehicle information acquiring unit 10 to a cloud server 2, and to receive the communication establishment information transmitted from the cloud server 2; an intervehicle communication unit 13 to carry out intervehicle communication; and a controller 12 to instruct the intervehicle communication unit 13 to perform the intervehicle communication and to establish communication in accordance with the communication establishment information the cloud communication unit 11 receives.