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The tanker endorsement applies to drivers who wish to drive a tank in Class A, B, or C CDL. To add this endorsement to your CLP/CDL, you must pass a knowledge test on the problems posed by large volume liquid cargos. The North Carolina CDL tank vehicles test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The NC tanker test covers the following sections of the North Carolina CDL Manual: Driving Safely, Combination Vehicles, Tank Vehicles, Hazardous Materials. Take this NC tanker practice test now to prepare for the actual test!
1. In vehicles with air brakes, water and compressor oil in the bottom of the air tank:
should be drained completely.
should not be removed.
should be added regularly.
None of the above.
2. You must know the outage requirement when hauling liquids in bulk. Why?
Some of the heaviest liquids don't need any outage.
You must never leave room for the expanding liquid.
Different liquids expand by different amounts as they warm.
All of the above.
3. When driving a tanker, liquid surge:
should not  be a concern.
results from movement of the liquid in full tanks.
is never dangerous.
can have bad effects on handling.
4. Column 2 in the Hazardous Material Table contains:
the hazard class or division.
the identification numbers.
the HazMat description and shipping name.
the label codes.
5. Rollovers happen when drivers:
stop too often.
turn too slowly.
brake too hard.
turn too fast.
6. Empty trucks require greater stopping distances. True or False?
True, but only on wet surfaces.
False, but only for trucks built on or after March 1, 1998.
7. ______ surge results from movement of the cargo in partially filled tanks.
8. Placards must be:
in a diamond shape.
readable from all 4 directions.
turned upright on a point.
All of the above.
9. If you are stopped on an incline, how can you start moving without rolling back?
Fully engage the clutch
Aggressively pump the accelerator
Apply the parking brake
Shift to neutral
10. The parking brake:
should be used whenever you park.
should be used when driving in bad weather.
should be used when you need to apply the brakes firmly.
All of the above.
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NC CDL Tanker 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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