CDL PRACTICE TEST (NC) - GENERAL KNOWLEDGE TEST
11.
Which of the following may have reduced the clearances since the heights were posted at bridges and overpasses?
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Rain
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Repaving of the road
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The weight of a cargo
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Traffic
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12.
When meeting an oncoming vehicle at night, if the other driver does not put their low beams on, you should:
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"get back at the other driver" by putting your own high beams on.
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flash your high beams at the other driver.
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look slightly to the right to avoid looking directly at the lights of the oncoming vehicle.
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slow down and look straight ahead in your lane.
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13.
If your brakes get wet, it can cause them:
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to grab.
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to apply unevenly.
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to be weak.
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All of the above.
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14.
Which of these can impair your vision and judgment, make you drowsy or otherwise affect safe driving ability?
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Alcoholic drinks
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Some prescription drugs
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Some over-the-counter drugs
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All of the above.
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15.
If your vehicle is equipped with a retarder, you should turn it off:
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whenever the road is wet, icy, or snow covered.
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when you are driving in heavy traffic.
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when you need to accelerate suddenly.
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when you are running late.
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16.
When checking tires, which of the following is not a problem?
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Too much air pressure
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Radial and bias-ply tires used together
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4/32 inch tread depth on front tires
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Cracked valve stems
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17.
Aggressive driving is the act of:
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operating a vehicle at a safe speed.
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operating a vehicle in the left lane.
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operating a vehicle at night.
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operating a vehicle in a selfish or pushy manner.
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18.
Which of these is true about the radiator shutters and the winterfront?
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You should make sure the winterfront is closed tightly.
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You should remove ice from the radiator shutters.
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If the winterfront is left open, the engine may overheat.
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All of the above.
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19.
Which of the following is NOT a good rule for using turn signals?
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Signal continuously until you have completed the turn.
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Put your turn signal on after the turn.
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Cancel your signal after you have turned.
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Signal well before you turn.
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20.
When you discover a fire, if the trailer doors are hot you should not open them because:
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the temperature of the trailer should not be changed in any way.
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opening the doors lets air in and may make the fire flare up.
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with air many fires do less damage.
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you should use the fire extinguisher on the door.
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