CDL COMBINATION VEHICLES III FINAL PAPER
2026 COMPLETE QUESTIONS ANSWERS
PREMIUM STUDY GUIDE
◉ Service and emergency air line from the vehicle to the trailer.
Answer: Glad hands are usually connecting which of these?
◉ If the trailer has no spring brakes, you could drive away but you
would have the trailer brakes.
Answer: A driver crosses air lines when hooking up to an older
trailer. What will happen?
◉ To test the trailer brakes.
Answer: The hand valve should be used to?
◉ Back.
Answer: When driving a set of doubles it is necessary to close which
shut-off valve in the last trailer?
◉ Trailer will be lifted slightly when the tractor backs under it.
Answer: You are about to back your tractor under the semitrailer.
The trailer is at the height when the?
, ◉ Emergency trailer brakes to come on.
Answer: Your emergency air line brakes or gets pulled apart while
your driving. The loss of pressure will cause the?
◉ Check air line connection.
Answer: If the brakes are not released when you push the trailer air
supply valve you should?
◉ Often do not have spring brakes.
Answer: Air brake equipped trailers made from 1975?
◉ Keep the cargo as close to the ground as possible.
Answer: There are two things that a driver can do to prevent a
rollover. They are (1) go slow around turns and (2)?
◉ Supply air to the trailer system, then pull out the air supply knob.
Answer: After connecting the air lines but before backing under the
trailer you should?
◉ The shank.
Answer: Which part of the kingpin should the locking jaws close
around?
2026 COMPLETE QUESTIONS ANSWERS
PREMIUM STUDY GUIDE
◉ Service and emergency air line from the vehicle to the trailer.
Answer: Glad hands are usually connecting which of these?
◉ If the trailer has no spring brakes, you could drive away but you
would have the trailer brakes.
Answer: A driver crosses air lines when hooking up to an older
trailer. What will happen?
◉ To test the trailer brakes.
Answer: The hand valve should be used to?
◉ Back.
Answer: When driving a set of doubles it is necessary to close which
shut-off valve in the last trailer?
◉ Trailer will be lifted slightly when the tractor backs under it.
Answer: You are about to back your tractor under the semitrailer.
The trailer is at the height when the?
, ◉ Emergency trailer brakes to come on.
Answer: Your emergency air line brakes or gets pulled apart while
your driving. The loss of pressure will cause the?
◉ Check air line connection.
Answer: If the brakes are not released when you push the trailer air
supply valve you should?
◉ Often do not have spring brakes.
Answer: Air brake equipped trailers made from 1975?
◉ Keep the cargo as close to the ground as possible.
Answer: There are two things that a driver can do to prevent a
rollover. They are (1) go slow around turns and (2)?
◉ Supply air to the trailer system, then pull out the air supply knob.
Answer: After connecting the air lines but before backing under the
trailer you should?
◉ The shank.
Answer: Which part of the kingpin should the locking jaws close
around?
