Home › CDL Practice Tests › Combination Vehicles Questions › Question 164
What is the job of the safety latch on a fifth wheel locking lever?
- A.To unlock the jaws automatically when backing under a trailer
- B.To keep the locking lever from moving out of the locked position accidentally
- C.To grease the kingpin each time it moves
- D.To hold the landing gear crank in place
Correct answer
B. To keep the locking lever from moving out of the locked position accidentally
Why
The latch is a backup that prevents vibration or a snag from walking the lever open. Checking that it is engaged is part of confirming a coupling, not an optional extra.
Manual topic: Combination Vehicles - Trailer Inspection · From the Combination Vehicles practice bank (CV-164).