10/22/24, 11:25 PM CDL COMBINATION VEHICLE EXAM, PRACTICE EXAM AND STUDY GUIDE NEWEST 2024 ACTUAL EXAM 100 QUESTION…
CDL COMBINATION VEHICLE EXAM, PRACTICE
EXAM AND STUDY GUIDE NEWEST 2024 ACTUAL
EXAM 100 QUESTIONS AND CORRECT DETAILED
ANSWERS
Terms in this set (91)
1. You are coupling a semi- It will be raised slightly when the tractor is backed
trailer to your tractor but under it.
have not yet backed
under, the trailer is at the
right height when:
A. It will be raised slightly
when the tractor is backed
under it.
B. The kingpin is about 1
1⁄4 inches above the fifth
wheel.C. The end of the
kingpin is even with the
top of the fifth wheel.
You should not back a At normal pressure.
tractor under a trailer until
the whole air system is:
A. Between 60 and 80 PSI.
B. At normal pressure.
C. Bled down to half the
maximum pressure.
https://quizlet.com/961101369/cdl-combination-vehicle-exam-practice-exam-and-study-guide-newest-2024-actual-exam-100-questions-and-correct-d… 1/34
,10/22/24, 11:25 PM CDL COMBINATION VEHICLE EXAM, PRACTICE EXAM AND STUDY GUIDE NEWEST 2024 ACTUAL EXAM 100 QUESTION…
Which part of the kingpin The shank.
should the locking jaws
close around?
A. The base.
B. The shank.
C. The head
When you get ready to Directly in front of the trailer.
back under the semi-trailer
you should line up:
A. About 12 degrees off
the line of the trailer.
B. The kingpin to engage
the driver's side locking
jaw first. C. Directly in front
of the trailer.
How should you test the Pull gently forward in low gear against the locked
tractor semi-trailer trailer brakes, then look at it carefully.
connection for security?
A. Pull gently forward in
low gear against the
locked trailer brakes, then
look at it carefully.
B. Put the tractor in gear
and pull ahead with a
sharp jerk.
C. Rock the trailer back
and forth with the trailer
brakes locked.
https://quizlet.com/961101369/cdl-combination-vehicle-exam-practice-exam-and-study-guide-newest-2024-actual-exam-100-questions-and-correct-d… 2/34
,10/22/24, 11:25 PM CDL COMBINATION VEHICLE EXAM, PRACTICE EXAM AND STUDY GUIDE NEWEST 2024 ACTUAL EXAM 100 QUESTION…
When should you use the Never.
hand valve to park a
combination vehicle?
A. To park at loading
docks.
B. Never.
C. To park on a grade.
You supply air to the Pushing in the trailer air supply valve
trailer tanks by:
A. Pushing in the trailer air
supply valve
B. Pulling out the trailer air
supply valve
C. Connecting the service
line glad hand
Why should you be sure To prevent steering problems.
that the fifth wheel plate is
greased as required?
A. To reduce heat and
noise.
B. To prevent steering
problems.
C. To ensure good
electrical connections.
https://quizlet.com/961101369/cdl-combination-vehicle-exam-practice-exam-and-study-guide-newest-2024-actual-exam-100-questions-and-correct-d… 3/34
, 10/22/24, 11:25 PM CDL COMBINATION VEHICLE EXAM, PRACTICE EXAM AND STUDY GUIDE NEWEST 2024 ACTUAL EXAM 100 QUESTION…
After you supply air to the Applying and releasing the trailer brakes and listening
trailer, make sure the air for brake sounds.
lines are not crossed and
the trailer brakes are
working. This is done by:
A. Applying and releasing
the trailer brakes and
listening for brake sounds.
B. Lifting the brake pedal.
C. Turning on the parking
brakes from the cab.
here are two things that a Go slowly around turns.
driver can do to prevent a
rollover. They are: (1) Keep
the cargo as close to the
ground as possible; and
(2):
A. Make sure that the
brakes are properly
adjusted.
B. Keep the fifth wheel's
free play as tight as
possible.
C. Go slowly around turns.
Before you back under a Trailer brakes are locked.
trailer, make sure the:
A. Air supply knob is in.
B. Air brakes are off.
C. Trailer brakes are
locked.
https://quizlet.com/961101369/cdl-combination-vehicle-exam-practice-exam-and-study-guide-newest-2024-actual-exam-100-questions-and-correct-d… 4/34
CDL COMBINATION VEHICLE EXAM, PRACTICE
EXAM AND STUDY GUIDE NEWEST 2024 ACTUAL
EXAM 100 QUESTIONS AND CORRECT DETAILED
ANSWERS
Terms in this set (91)
1. You are coupling a semi- It will be raised slightly when the tractor is backed
trailer to your tractor but under it.
have not yet backed
under, the trailer is at the
right height when:
A. It will be raised slightly
when the tractor is backed
under it.
B. The kingpin is about 1
1⁄4 inches above the fifth
wheel.C. The end of the
kingpin is even with the
top of the fifth wheel.
You should not back a At normal pressure.
tractor under a trailer until
the whole air system is:
A. Between 60 and 80 PSI.
B. At normal pressure.
C. Bled down to half the
maximum pressure.
https://quizlet.com/961101369/cdl-combination-vehicle-exam-practice-exam-and-study-guide-newest-2024-actual-exam-100-questions-and-correct-d… 1/34
,10/22/24, 11:25 PM CDL COMBINATION VEHICLE EXAM, PRACTICE EXAM AND STUDY GUIDE NEWEST 2024 ACTUAL EXAM 100 QUESTION…
Which part of the kingpin The shank.
should the locking jaws
close around?
A. The base.
B. The shank.
C. The head
When you get ready to Directly in front of the trailer.
back under the semi-trailer
you should line up:
A. About 12 degrees off
the line of the trailer.
B. The kingpin to engage
the driver's side locking
jaw first. C. Directly in front
of the trailer.
How should you test the Pull gently forward in low gear against the locked
tractor semi-trailer trailer brakes, then look at it carefully.
connection for security?
A. Pull gently forward in
low gear against the
locked trailer brakes, then
look at it carefully.
B. Put the tractor in gear
and pull ahead with a
sharp jerk.
C. Rock the trailer back
and forth with the trailer
brakes locked.
https://quizlet.com/961101369/cdl-combination-vehicle-exam-practice-exam-and-study-guide-newest-2024-actual-exam-100-questions-and-correct-d… 2/34
,10/22/24, 11:25 PM CDL COMBINATION VEHICLE EXAM, PRACTICE EXAM AND STUDY GUIDE NEWEST 2024 ACTUAL EXAM 100 QUESTION…
When should you use the Never.
hand valve to park a
combination vehicle?
A. To park at loading
docks.
B. Never.
C. To park on a grade.
You supply air to the Pushing in the trailer air supply valve
trailer tanks by:
A. Pushing in the trailer air
supply valve
B. Pulling out the trailer air
supply valve
C. Connecting the service
line glad hand
Why should you be sure To prevent steering problems.
that the fifth wheel plate is
greased as required?
A. To reduce heat and
noise.
B. To prevent steering
problems.
C. To ensure good
electrical connections.
https://quizlet.com/961101369/cdl-combination-vehicle-exam-practice-exam-and-study-guide-newest-2024-actual-exam-100-questions-and-correct-d… 3/34
, 10/22/24, 11:25 PM CDL COMBINATION VEHICLE EXAM, PRACTICE EXAM AND STUDY GUIDE NEWEST 2024 ACTUAL EXAM 100 QUESTION…
After you supply air to the Applying and releasing the trailer brakes and listening
trailer, make sure the air for brake sounds.
lines are not crossed and
the trailer brakes are
working. This is done by:
A. Applying and releasing
the trailer brakes and
listening for brake sounds.
B. Lifting the brake pedal.
C. Turning on the parking
brakes from the cab.
here are two things that a Go slowly around turns.
driver can do to prevent a
rollover. They are: (1) Keep
the cargo as close to the
ground as possible; and
(2):
A. Make sure that the
brakes are properly
adjusted.
B. Keep the fifth wheel's
free play as tight as
possible.
C. Go slowly around turns.
Before you back under a Trailer brakes are locked.
trailer, make sure the:
A. Air supply knob is in.
B. Air brakes are off.
C. Trailer brakes are
locked.
https://quizlet.com/961101369/cdl-combination-vehicle-exam-practice-exam-and-study-guide-newest-2024-actual-exam-100-questions-and-correct-d… 4/34
