What is necessary when transporting a trailer with a commercial vehicle?

When transporting a trailer with a commercial vehicle, it is essential that the trailer is inspected and properly hitched. This ensures that the trailer is securely attached to the towing vehicle, preventing it from detaching while on the road, which could lead to dangerous situations. Proper hitching also involves checking the electrical connections for lights and brakes, if applicable, to ensure all components are functioning correctly. Inspection of the trailer ensures that it is in good condition, including checking brakes, tires, and structural integrity, which is crucial for safe operation on public roads.

The other options do not promote safety or compliance with regulations. For example, assuming no inspection is needed if traveling a short distance undermines the importance of safety checks, as mechanical failures can occur at any time, regardless of the journey's length. Additionally, towing a trailer that exceeds weight limits creates potential hazards, such as decreased vehicle control and increased stopping distances, which are particularly critical for commercial operations. Lastly, disconnecting the trailer before loading may not ensure safety; often, the trailer needs to remain connected for proper support and balance while loading heavy cargo.