A truck for exchangeable load carriers (interchangeable containers) has a permissable total mass of 6,000 kg. The interchangeable container has an empty mass of 1,500 kg. Which mass are you allowed to stow in this interchangeable container?

You answered correctly. The permissible total mass of the truck is 6,000 kg, which means that this is the maximum allowed weight including the vehicle, the container, and the cargo. Since the empty container weighs 1,500 kg, you need to subtract this from the total mass: 6,000 kg – 1,500 kg = 4,500 kg. This leaves 4,500 kg as the maximum cargo weight you can load into the container. In German road traffic, it is important never to exceed the permissible total mass for safety and legal reasons. Always calculate by subtracting the empty weight from the total allowed weight to find out how much load you can carry.