NORTH CAROLINA CDL PRACTICE TEST - GENERAL KNOWLEDGE
31.
The header board, if equipped, should:
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never be used for cargo.
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not be used in case of a crash or emergency stop.
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can be dangerous.
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block the forward movement of any cargo you carry.
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32.
When driving at night, you should dim your lights within _____ of an oncoming vehicle and when following another vehicle within _____ .
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300 feet ; 50 feet
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500 feet ; 500 feet
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200 feet ; 100 feet
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200 feet ; 200 feet
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33.
The best way to know what's going on behind and to the sides of your vehicle is to:
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lean out of the window.
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check your mirrors regularly.
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ask your passenger(s).
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use the rear view camera.
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34.
Front-end header boards:
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protect you from your cargo in case of a crash.
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block the forward movement of your cargo.
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protect you from your cargo in case of an emergency stop.
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All of the above.
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35.
You should downshift:
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before starting up a hill and while going around a curve.
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before entering a curve and before starting down a hill.
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after starting down a hill and after entering a curve.
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when stopping suddenly and when you are being tailgated.
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36.
Without engine oil:
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traction will be reduced.
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exhaust emissions will be reduced.
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the engine can be destroyed rapidly.
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the ABS won't work.
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37.
Axle weight is defined as:
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The maximum safe weight a tire can carry at a specified pressure
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The weight transmitted to the ground by one axle or one set of axles
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The weight of the trailer, including the axles
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None of the above.
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38.
When traction is poor, as in rain or snow, you should speed up very gradually. If you don't:
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you will exceed the speed limit.
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you could lose control.
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the brakes will not work.
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brake pressure will push the rod out.
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39.
Which of the following statements about brake shoes is true?
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Brake shoes should be thinner than ¼ inch.
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Brake drums must have cracks longer than half the width of the friction area.
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brakes can fade or fail from excessive heat caused by relying too much on the engine braking effect.
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None of the above.
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40.
To test your parking brake, do the following:
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Speed up to 5 mph, then set the parking brake.
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Set the parking brake while going downhill.
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Set the parking brake, and gently pull against it in a low gear.
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Speed up to 15 mph, then set the parking brake.
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