What is regulated by the road haulage act?

You answered correctly. The road haulage act (Güterkraftverkehrsgesetz) in Germany regulates commercial goods transport and goods transport against payment. This means it sets the rules for businesses and individuals who move goods professionally or for a fee. Private goods transport, where you move your own items without charging others, is not regulated by this act. This distinction is important: only commercial and paid transport fall under these legal requirements. Knowing this helps you identify which types of transport require special permits or compliance with regulations.