What is the correct procedure when coupling up a multiple-axle trailer?

When coupling a multiple-axle trailer, the correct procedure is to reverse the truck up to the parked trailer. This ensures precise control and alignment, allowing the towing vehicle to securely connect to the trailer's coupling device. Pushing the trailer to the truck or moving both vehicles simultaneously is unsafe because it can cause misalignment, damage, or accidents. Always position the truck first, then carefully back up to the trailer. This method is standard practice in German traffic regulations to ensure safety and proper hitching.