DC CDL GENERAL KNOWLEDGE TEST - CDL PRACTICE TEST
21.
If you must stop on a one-way or divided highway, place your warning devices:
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10 feet, 50 feet, and 150 feet toward the approaching traffic.
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50 feet, 100 feet, and 150 feet toward the approaching traffic.
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100 feet, 200 feet, and 300 feet toward the approaching traffic.
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10 feet, 100 feet, and 200 feet toward the approaching traffic.
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22.
The space under a heavily loaded vehicle can be very small. This can cause problems:
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on unpaved yards.
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when crossing railroad tracks.
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on dirt roads.
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All of the above.
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23.
If a load is 10 feet long, the minimum number of tie-downs required is:
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3
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4
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1
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2
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24.
To warn drivers behind you when you see you'll need to slow down, you should:
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turn off your lights.
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use your headlights.
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flash the brake lights.
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sound your horn.
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25.
Which of the following statements about alcohol is TRUE?
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Time is the only method that works to sober you up.
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Taking a cold shower will help sober you up.
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Most people can drink 2 beers without affecting their driving ability.
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Drinking black coffee will help sober you up.
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26.
Aggressive driving is the act of:
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operating a vehicle in a selfish or pushy manner.
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operating a vehicle at a safe speed.
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operating a vehicle at night.
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operating a vehicle in the left lane.
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27.
If coolant has to be added to a system without a recovery tank, you should:
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wait until the engine has cooled before adding coolant.
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turn the radiator cap quickly to the first stop.
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never use thick cloth to touch the radiator cap.
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keep the engine running while adding coolant.
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28.
Name two situations in which it may not be safe to operate your vehicle at legal maximum weights.
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During bad weather or in mountains
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Over bridges or through tunnels
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In heavy traffic or at night
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All of the above.
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29.
Which of the following is checked in a pre-trip inspection?
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Steering wheel
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Mirrors and windshield
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Wiper blades
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All of the above.
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30.
To prevent fire, during the en route inspection you should check the tires, wheels, and truck body for signs of:
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ice.
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front-wheel skids.
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heat.
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a fire extinguisher.
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