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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Nebraska 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 Nebraska CDL Manual. Take this practice test now to prepare for the actual NE CDL combination test!
1. Radial and bias-ply tires:
should be used together only during bad weather.
should not be used together.
should be used together only when driving in packed snow.
should be used together.
2. Having ABS on only the trailer:
makes the trailer more likely to swing out.
still gives you more control over your vehicle during braking.
is very dangerous.
makes the trailer more likely to roll over.
3. Which of the following statements about off-tracking is true?
When a vehicle goes around a corner, the rear wheels follow the same path as the front wheels.
If there is more than one trailer, the rear wheels of the last trailer will off-track the most.
Longer vehicles off-track less.
None of the above.
4. When backing a trailer, you should:
turn the steering wheel toward the direction you want to go.
turn the steering wheel in the opposite direction of the turn.
avoid using the brakes.
try to position your vehicle so you can back on a curved path.
5. If you unlock the pintle hook with the dolly still under the rear trailer:
the brakes could be damaged by the combined forces of the springs and the air pressure.
your vehicle might roll away.
steam and boiling water can spray under pressure.
the dolly tow bar may fly up.
6. An item that is 15 feet long placed on a flatbed trailer should have at least:
15 tie-downs.
1 tie-down.
2 tie-downs.
3 tie-downs.
7. When driving on slippery surfaces, you should:
change lanes often.
not pass slower vehicles unless necessary.
make turns as quickly as possible.
All of the above.
8. When the wheels of a trailer lock up, the trailer will tend to swing around. This is more likely to happen when:
the trailer is empty or lightly loaded.
the trailer is overloaded.
the trailer is fully loaded.
None of the above.
9. An Anti-lock Braking System:
lets you brake faster.
keeps your wheels from locking when you brake hard.
increases the distamce required to stop on slippery surfaces.
increases a vehicle's stopping power.
10. Dollies with ABS are required to have a malfunction lamp:
on the left side.
on the front.
on the right side.
on the rear.
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CDL Combination Test (NE)

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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