The Road Haulage Act applies to commercial haulage vehicles or vehicle combinations in excess of what gross vehicle weight rating?

You answered correctly. In Germany, the Road Haulage Act (GüKG) applies to commercial vehicles or vehicle combinations with a gross vehicle weight rating (GVWR) over 3.5 tonnes. This threshold distinguishes lighter goods vehicles, which are generally not subject to these regulations, from heavier ones used in commercial transport, which must comply with the requirements of the law. Knowing this limit is important for transport businesses and drivers to ensure compliance with licensing, documentation, and operational rules. If a vehicle or combination exceeds 3.5 tonnes GVWR and is used commercially, the rules of the Road Haulage Act must be followed.