An on-vehicle device includes a display device, a body device, and a support plate. The body device is installed on a back surface of the display device. The support plate includes a fixation part with a plate shape that is fixed on a top surface of the body device and a support part with a plate shape that is continuous with the fixation part and is formed so as to be bent, and supports a back surface of the display device by a plate spring part that is formed on the support part.

A tow aid system used while operating a wrecker adapted to tow a vehicle, the wrecker comprising an underlift arm extending rearward from the wrecker, wherein the underlift arm is adapted to lift at least a part of the vehicle for towing. The tow aid system comprises: axle load sensors mounted along different longitudinal positions on the wrecker, the axle load sensors generating signals indicative of loads along the different longitudinal positions; an underlift arm load sensor mounted about the underlift arm, the underlift arm load sensor generating signals indicative of a load applied on the underlift arm while holding the vehicle in a towing position; and a controller processing the signals from the axle load sensors and the underlift arm load sensor to calculate operating limits of the wrecker.

A motor vehicle according to an exemplary aspect of the present disclosure includes, among other things, a conspicuity lamp and a controller configured to illuminate the conspicuity lamp in proportion to a load of the motor vehicle. A method is also disclosed.

A method for determining an actual level of a vehicle, includes determining an actual level of the vehicle as a function of a distance between at least one wheel of the vehicle and a superstructure of the vehicle, wherein the distance is determined by means of a signal detected by at least one chassis sensor, wherein the signal includes at least signal portions that correspond to an own movement of the vehicle and signal portions that correspond to an excitation by a road on which the vehicle actually drives; filtering the signal portions corresponding to the own movement of the vehicle out of the signal detected by the at least one chassis sensor by means of a filter function; calculating the actual level of the vehicle from a difference between the filtered signal without the signal portions that correspond to the own movement of the vehicle and the signal detected by the at least one chassis sensor.

The invention relates to a method for determining a type of the road on which a vehicle is driving. The method comprises sensing a sound of a wheel of the vehicle which is rolling on the road by means of a microphone and/or sensing a vertical acceleration of the vehicle by means of a vertical acceleration sensor or sensing a suspension of the vehicle by means of a suspension sensor and determining the type of the road on the basis of the sensed sound and/or the sensed acceleration or the sensed suspension. Further, the invention relates to a device for carrying out the aforesaid method.

An on-vehicle device includes a display device, a body device, and a support plate. The body device is installed on a back surface of the display device. The support plate includes a fixation part with a plate shape that is fixed on a top surface of the body device and a support part with a plate shape that is continuous with the fixation part and is formed so as to be bent, and supports a back surface of the display device by a plate spring part that is formed on the support part.

A method for determining an actual level of a vehicle, includes determining an actual level of the vehicle as a function of a distance between at least one wheel of the vehicle and a superstructure of the vehicle, wherein the distance is determined by means of a signal detected by at least one chassis sensor, wherein the signal includes at least signal portions that correspond to an own movement of the vehicle and signal portions that correspond to an excitation by a road on which the vehicle actually drives; filtering the signal portions corresponding to the own movement of the vehicle out of the signal detected by the at least one chassis sensor by means of a filter function; calculating the actual level of the vehicle from a difference between the filtered signal without the signal portions that correspond to the own movement of the vehicle and the signal detected by the at least one chassis sensor.