US Patent 11560089 Bus with a variable height warning signal

A bus, notably an articulated low platform bus with an electric drive or a hybrid drive. The bus includes a vehicle detection module configured for detecting vehicle such as a car, a van or a motorbike, a height obtaining module adapted for obtaining the height of the detected vehicle, and a lighting system with a lighting surface adapted for displaying a luminous picture at least partially or totally above the height of the detected vehicle. The height of the luminous picture is adapted depending on the size of the vehicle for visibility purposes.