What must you check before coupling up a multiple-axle trailer?

Before coupling a multiple-axle trailer in Germany, it is important to ensure safety and proper connection. First, check that the trailer is secured against rolling away by using the parking brake or wheel chocks to prevent any movement during coupling. Second, make sure the towing fork is correctly adjusted so that the trailer fits securely and safely onto the towing vehicle's hitch. This ensures a stable connection during driving. Checking the air brake tanks is not part of the coupling process but will be done separately for braking system functionality. Following these steps prevents accidents and ensures the trailer is properly attached.