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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. If your ABS is not working:
you should immediately bring your vehicle to a complete stop.
it will slow your truck to a halt and force you to pull over.
you still have normal brake functions, and should drive and brake as you always have.
the drive wheels will begin to spin, and you should take your foot off the accelerator.
2. If you have a manual transmission, when stopping don't _______ until the engine rpm is down close to idle.
push the clutch in
place the transmission in park
apply the brakes
shift to second gear
3. When you make a quick lane change, the crack-the-whip effect can:
improve your traction.
the trailer to swing wide to the left.
make it harder to turn without skidding.
turn the trailer over.
4. When checking the air and electric lines to the trailer, be sure that the air lines are properly connected to the gland hands, and are:
properly greased.
secured with enough slack for turns.
secured with enough air leaks for turns.
None of the above.
5. When backing, as soon as you see the trailer getting off the proper path, you should:
turn the top of the steering wheel in the opposite direction of the drift.
to keep a firm grip on the steering wheel and continue backing.
turn the top of the steering wheel in the direction of the drift.
None of the above.
6. If a trailer does not have spring brakes, to keep the trailer from moving you should:
park on a slight decline.
use the service brakes.
use wheel chocks.
close the brake valve.
7. If the ABS is not working:
you still have normal brake functions.
the vehicle will have no brakes.
the vehicle will have weak brakes.
None of the above.
8. When backing a trailer on a curved path you should back towards:
the driver's side.
either side.
the passenger's side.
neither side (back up straight).
9. Emergency brakes must be must be held on by:
the locking mechanism.
mechanical force.
air pressure.
10. When the wheels of a trailer lock up:
the trailer will tend to swing around.
the vehicle will gradually come to a complete stop.
ABS will increase stopping power.
All of the above.
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NE CDL Combination Test

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