An inter-vehicle communication device of a vehicle 10 provided with an electrical coupler 16 that constructs a communication path with a vehicle 20 by using an electric contact with the vehicle 20, the inter-vehicle communication device comprising: a communication control circuit 11 controlling a…

The present invention provides a high reliability information transmission system which can continue transmission at the occurrence of multiple failures. Providing two key transmission lines, connecting transmission terminals to both of the key transmission lines, transmitting data to both key…