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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Wisconsin CDL combination test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The test covers the combination vehicles section of the Wisconsin CDL Manual. Take this practice test now to prepare for the actual WI CDL combination test!
1. When driving at night you should:
always use low beams.
keep the interior light on.
use your high beams when it is safe and legal to do so.
All of the above.
2. In combination vehicles with air brakes, the trailer air supply control:
is used to control the tractor protection valve.
is a coupling devices used to connect the service and emergency air-lines from the tractor to the trailer.
is used to keep the trailer behind the tractor.
supplies air to the trailer air tanks.
3. When parking, you should choose a spot:
that requires backing up.
that allows you to pull forward when you leave.
that allows you do a walk around inspection.
All of the above.
4. If you're feeling tired while driving you should:
eat something.
stop driving and get some rest.
drink coffee.
increase your speed to get to your destination quicker.
5. Why should you cover your cargo?
To protect people from spilled cargo.
To protect the cargo from weather.
Because spill protection is a safety requirement in many states.
All of the above.
6. During your inspection, you should look into the fifth-wheel gap and check that the _________ are fully closed around the kingpin.
locking jaws
mounting bolts
lug nuts
couplings (U-joints)
7. A vehicle inspection should be done in the same order each time:
because it's much quicker.
because it is required by law.
so you are less likely to forget something.
because the report must be written in that order.
8. After coupling the trailer, begin raising the landing gear by using:
the high gear range.
the crank handle.
the low gear range.
the electrical cord.
9. You are coupling a semi-trailer to your tractor but have not yet backed under. The trailer is at the right height when:
the end of the kingpin is even with the top of the fifth wheel.
the locking jaws are around the head of the kingpin.
it will be raised slightly when the tractor is backed under it.
None of the above.
10. You are driving a combination vehicle and must use your brakes to avoid a crash. You should:
brake lightly and hold the steering wheel firmly.
use the parking brake.
push the brake pedal as hard as you can and hold it there.
use stab braking or controlled braking.
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WI CDL Combination Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
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