Benzoic acid derivatives of the formula . The adaptive noise generating device includes a carrier panel, an actuator arranged on the carrier panel. The charge controller has at least one settable threshold value including a first threshold value, and the first threshold value is 2. A processor processes the provided data regarding identified head candidates to locate the person’s head. A state of charge of a battery in the vehicle is determined. For this purpose, all light-conducting elements allocated to the sensors are to be connected in one piece as a light-conducting member and integrated into the light-conducting member of a rain sensor.