in a method for line - of - sight - independent data transmission in a car - to - car or a car - to - infrastructure communication system , electromagnetic radiation having encoded data is transmitted from a transmitter located in a first vehicle or in a traffic infrastructure object , and a reflector system is provided for at least partially reflecting the transmitted electromagnetic radiation , wherein the reflector system is arranged so that the transmitted electromagnetic radiation arrives at a receiver located in a second vehicle or in the traffic infrastructure object . the reflected electromagnetic radiation having the encoded data can then be received by the receiver even when line - of - sight communication between the vehicles is impossible .