GH-500 series rollover bus/truck wash machine, suitable for cleaning dust, oil stains and other stains on the surface of large vehicles. Automatically clean the front, roof, sides and rear of the vehicle through the action of water, detergent and cleaning brush. The bus washing machine is composed of a mobile brushing system, an electric control system, a water supply system, a detergent supply system, etc. When the vehicle stops at the designated position in the cleaning area, the bus washing machine moves on the walking rail, automatically sprays foam and start brushes washing , and can choose whether to use the top brush to clean the front, rear or roof during the cleaning process. The touch screen can be used to select whether to use foam as well. For 2 side brush structure, high pressure water will be added to the top to wash the top of the truck.