Method and apparatus for communicating between vehicles

PURPOSE: A communication method between the vehicles and a device thereof are provided to execute communication between the vehicles without using a facility and a mobile communication network. CONSTITUTION: An information transmission unit(15) of a communication device(1) installed in a first vehicle determines whether traffic jam is generated on a first road line. When the traffic jam is generated, the information transmission unit generates a traffic jam generation message including position information for the first vehicle. The information transmission unit selects one channel according to a direction in which the first vehicle is driven. The information transmission unit transmits the generated message to the communication device of a second vehicle located on the first road line through the selected channel. [Reference numerals] (1) Communication device; (11) GPS reception unit; (12) Location information acquisition unit; (13) Communication unit; (14) Speed measurement unit; (15) Information transmission unit