The operation of combinations of a vehicle and a trailer is to be rendered safer. For this purpose a method for reproducing images from backward cameras of a combination of a vehicle and a trailer is suggested. A first image (RV) from a first backward camera, which is arranged on the vehicle, and a second image (TR) from a second backward camera are simultaneously reproduced on a display unit in the vehicle. For the reproduction a predeterminable window (F) of the display unit is used in order to represent exclusively the second image (TR) from the second camera of the trailer.