System with 6 compact digital sensors (ø 18 mm), which can be varnished in vehicle colour, ideally suitable for especially high or wide vehicles. With the measurement it considers also attachments to the bodywork, as for example bike carriers or towbars. If a bike carrier is attached, the system can be switched manually between 2 stop zones, depending on whether the carrier is folded in or out. The system warns acoustically within a detection range of approx. 3 m of obstacles, sensitivity is adjustable in 3 steps.