Home › CDL Practice Tests › Combination Vehicles Questions › Question 5
When you first back under and hear the fifth wheel lock, what is the next safety check?
- A.Immediately pull forward at normal speed
- B.Raise the landing gear before looking
- C.Connect the electrical cord from inside the cab
- D.Shut off the engine, set the parking brake, get out, and visually inspect the coupling
Correct answer
D. Shut off the engine, set the parking brake, get out, and visually inspect the coupling
Why
Hearing a click does not prove a secure lock. A visual check confirms the jaws are closed around the kingpin shank before you trust the connection with any pull.
Manual topic: Combination Vehicles - Coupling · From the Combination Vehicles practice bank (CV-005).