COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, VEHICLE, NON-TRANSITORY COMPUTER-READABLE MEDIUM, AND COMMUNICATION METHOD

Provided are a communication device, a communication system, a vehicle, a non-transitory computer-readable medium, and a communication method that reduce the transmission of information that is not necessary for a driver of a transmission target vehicle. A communication device (10) mounted on a first vehicle is provided with: a communication unit (13) that wirelessly communicates with a communication device mounted on a vehicle other than the first vehicle; and a control unit (11) that, when event information indicating the occurrence of an event transmitted from a communication device mounted on a second vehicle different from the first vehicle is received by the communication unit (13), determines the status of a third vehicle different from the first vehicle and the second vehicle, and, on the basis of the result of the determination, controls the occurrence of an event on the basis of the event information, and determines whether or not to cause the communication unit (13) to transmit the event informatio