CDL GENERAL KNOWLEDGE TEST (NC) - PRACTICE TEST
21.
When taking a curve you should:
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brake in the curve to avoid to locking the wheels.
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maintain the same speed you were traveling at before entering the curve.
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be in a gear that will let you accelerate slightly in the curve.
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slightly exceed the posted speed limit for the curve, as this will help you keep control.
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22.
Strong winds can make it difficult to stay in your lane especially when driving:
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flatbed trailers.
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vehicles with ABS.
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heavier vehicles.
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lighter vehicles.
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23.
If the air pressure gets too low:
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ABS will help maintain vehicle control.
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the brakes will lock up.
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you should set the parking brake.
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the brakes will not work.
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24.
You are driving on a two-lane road. If an oncoming driver has drifted into your lane:
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a move to your right is best.
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a move to your left is best.
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you should downshift.
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you should brake as hard as you can.
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25.
When making a turn, you should cancel your turn signal:
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once more than half of your vehicle is round the turn.
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once the rear end of your cab has cleared the turn.
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once you have begun the turn.
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once you have completed the turn.
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26.
If you are driving a 30-foot vehicle at 55 mph, you should leave at least _____ between you and the vehicle ahead.
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3 seconds
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2 seconds
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5 seconds
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4 seconds
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27.
Under-loaded front axles:
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can cause tire failure.
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can improve traction.
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can make the steering axle weight too light to steer safely.
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All of the above.
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28.
Which of the following statements about driving in hot weather is true?
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If a tire is too hot to touch, you should hose it down with water.
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You should check the tire mounting and air pressure before driving.
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Spots where tar "bleeds" to the surface
provide better traction.
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All of the above.
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29.
Who is responsible for making sure the lights and reflectors are clean?
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The previous driver
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The shipper
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The driver
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The maintenance staff
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30.
To maintain alertness while driving, you should:
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keep the cab warm.
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protect yourself from glare with sunglasses.
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take periodic breaks – about every 250 miles.
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rely on caffeine.
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