MISSOURI CDL PRACTICE TEST - GENERAL KNOWLEDGE
21.
When a vehicle is hydroplaning:
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the clutch is stuck.
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the tires lose their contact with the road.
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the spray from large trucks reduces visibility.
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22.
When going down long, steep downgrades, you should:
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only use the brakes.
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try not to use the brakes.
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downshifting and then use the brakes.
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23.
A tank endorsement is:
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required for both liquids and gases.
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only required when transporting liquids.
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only required when transporting gases.
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24.
To test the service brake:
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gently try to pull forward with the trailer parking brake on, then release the brake.
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shift your transmission to a low gear, pump the brake pedal three times, then hold it down for five seconds.
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push the brake pedal firmly while going about 5 mph.
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25.
To avoid becoming a distracted driver you should:
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not turn off all communication devices.
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not engage in complex conversations with others.
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adjust all vehicle controls and mirrors while driving.
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26.
Which of the following statements about tire failure is true?
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If the steering feels heavy, it may be a sign one of the rear tires has failed.
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It can take a few seconds for your vehicle to react, and you might think it was some other vehicle.
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Any time you hear a tire blow, you would be safest to assume it is not yours.
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27.
When checking the condition of wheels and rims during the pre-trip inspection, make sure that:
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no more than two lug nuts are missing.
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the end of the kingpin is even with the top of the fifth wheel.
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no studs, spacers, clamps, or lugs are missing, bent, or broken.
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28.
Rims with welding repairs:
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can be used for tires in the front of the vehicle.
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can be used for tires in the rear of the vehicle.
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are not safe.
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29.
When driving, you:
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should only use turn signals if there is a vehicle behind you.
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should always use turn signals to tell other drivers your intentions.
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should carefully evaluate road and traffic conditions to decide if you should use turn signals.
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30.
When driving in a construction zone, if a construction worker is near the road, you should:
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maintain a constant speed.
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come to a complete stop.
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further reduce your speed.
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