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https://www.udomachinery.com/txg-series-gantry-truck-washing-system/txg-series-gantry-truck-washing-system.html          
 
Commercial truck wash systems                are industrial-grade equipment used for cleaning commercial trucks and buses. These systems typically use a combination of high-pressure water jets, brushes, and chemical cleaners to remove dirt, grime, and other debris from the exterior of the vehicle. Some systems also include additional features such as undercarriage washing and hot water capability. Automatic truck wash systems can be installed at trucking depots, truck stops, and other locations where large numbers of commercial vehicles congregate. They may be operated by the vehicle owners or by independent wash operators.     

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