What is the first step to take if space is noticed between the trailer and fifth wheel?

The first step to take if space is noticed between the trailer and fifth wheel is to check the coupling. This action is crucial as it ensures that the connection between the tractor and trailer is secure and properly engaged. If there is space between the two components, it indicates that they are not correctly locked together, which can lead to potential hazards while driving, including the risk of the trailer becoming detached.

Investigating the coupling allows the driver to confirm that the locking mechanism is engaged, that the fifth wheel plate is positioned correctly, and that there are no obstructions or issues preventing proper coupling. Addressing this gap is essential for safety before proceeding with any further actions, like securing the trailer or moving the vehicle.

Other options, such as driving the vehicle, would be unsafe without confirming the integrity of the coupling. Coupling the trailer securely and ensuring the landing gear is raised are subsequent steps that should only be taken after verifying the initial connection between the fifth wheel and trailer is safe and correctly aligned.