Home › CDL Practice Tests › Combination Vehicles Questions › Question 120
How can you check that the jaws have closed properly, beyond the tug test?
- A.Listen for the engine sound
- B.Check the fuel gauge
- C.Look in with a flashlight if needed and confirm you can see the jaws closed around the kingpin shank with no gap at the apron
- D.Ask another driver to guess
Correct answer
C. Look in with a flashlight if needed and confirm you can see the jaws closed around the kingpin shank with no gap at the apron
Why
Direct sight is the definitive check: jaws on the shank, handle fully in, latch closed, and plates flush. The tug test supports this check but does not replace it.
Manual topic: Combination Vehicles - Coupling Equipment · From the Combination Vehicles practice bank (CV-120).