QUESTIONS WITH CORRECT ANSWERS 2026
If you cannot make a turn without entering another traffic lane, you should: -
CORRECT ANSWER-Turn wide as you complete the turn
You have pushed in the trailer supply valve. You should not move the tractor until the whol
e air system is: - CORRECT ANSWER-At normal pressure
Loss of air pressure in the emergency line causes: - CORRECT ANSWER-
The trailer's emergency brakes to come on
To stop a trailer skid, you should: - CORRECT ANSWER-Release the service brakes
The air leakage rate for a combination of two vehicles (engine off, brakes off) should not be
greater than: - CORRECT ANSWER-3 psi or less in one minute
You are uncoupling a trailer. After you shut off the trailer air supply and lock the trailer bra
kes, you should: - CORRECT ANSWER-
Back up gently to ease pressure on the fifth wheel locking jaws
Before you back under a truck trailer, make sure the: - CORRECT ANSWER-
Trailer brakes are locked
The tractor protection value will close and the trailer emergency brakes will come on when
there is a major leak in which brake line? - CORRECT ANSWER-Emergency brake line