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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Montana 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 Montana CDL Manual. Take this practice test now to prepare for the actual MT CDL combination test!
1. Which of the following is NOT part of checking the sliding fifth-wheel?
Testing the tractor protection valve
Checking that it is properly greased
Checking that the slide is not damaged or parts are missing
Checking that all locking pins are present and locked in place
2. Poor weight balance:
increases fuel efficiency.
makes it easier to turn.
can make vehicle handling more difficult.
improves handling.
3. You must check that all shut-off valves are in the open position except the ones:
on the first trailer in a set of doubles.
on the middle trailer of a set of triples.
at the back of the last trailer.
on the first trailer in a set of triples.
4. To prevent a rollover, the driver should:
drive on the shoulder if possible.
make quick lane changes if possible.
pay extra attention to the coolant level.
drive slowly around corners, on ramps, and off ramps.
5. After starting the engine, oil pressure should rise to a normal level:
within 3 miles.
within seconds.
within 6 minutes.
within 2 minutes.
6. To avoid rollbacks when you start, you should:
release the parking brake only when you have applied enough engine power.
put on the parking brake whenever necessary.
if you have manual transmission, partly engage the clutch before you take your right foot off the brake.
All of the above.
7. Who is responsible for inspecting the cargo?
The motor carrier
The person who loaded and secured the cargo
The shipper
The driver
8. Before connecting the converter dolly to the rear trailer, make sure that:
the trailer height is slightly lower than the center of the fifth-wheel.
the shut-off valves at the rear of the first trailer are open.
the locking jaws rest on the kingpin.
the kingpin rests on the fifth-wheel.
9. On a tractor-trailer equipped with a trailer brake hand valve, the hand valve can be used to:
reduce the chance of the front wheels skidding.
keep from rolling back.
prevent movement of cargo.
hold compressed air.
10. On front tires, tread should be at least:
4/16 inch
2/32 inch
4/32 inch
1/16 inch
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MT CDL Combination Test

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