Abstract: A signalling aapparatus for a motor vehicle is provided with communication means for receiving information coming from another motor vehicle and for broadcasting information intended for a nearby motor vehicle, and with sensor means for providing inforation about the status or status change of thr respective motor vehicle with regard to at least the safety of this vehicle. A computer is present for determining, on the ground of the information coming from the sensor means and/or on the ground of the received information, information to be broadcast and further action signals. In addition, means are present to enable, on the ground of the action signals, realization of a status change of the respective motor vehicle, which means are formed by a signalling element for making observable a signalling knowable for the driver of the vehicle or of a nearby vehicle.