CDL GENERAL KNOWLEDGE TEST (DISTRICT OF COLUMBIA) - PRACTICE TEST
11.
Over-length loads:
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require special driving care.
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may require special equipment such as "wide load" or flags.
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require special transit permits.
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All of the above.
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12.
Which of the following statements about driving in slippery conditions is NOT true?
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Wet ice is more slippery than ice that is not wet.
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As the temperature rises to the point where ice begins to melt, the road becomes less slippery.
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When the temperature drops, bridges will freeze before the road will.
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The roads are most slippery in the first half hour after it starts to rain.
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13.
Multi-speed rear axles and auxiliary transmissions are used:
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to make it easier to change gears.
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to provide extra gears.
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reduce exhaust emissions.
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to reduce brake wear.
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14.
You should signal your intention to turn at least ____ before turning or changing lanes.
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100 feet
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250 feet
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50 feet
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75 feet
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15.
Why should you complete an after-trip inspection report?
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So you won't be held responsible for any subsequent damage.
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To prove that you finished your trip.
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To help the motor carrier know when the vehicle needs repairs.
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All of the above.
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16.
Vehicles must be equipped with emergency equipment, including:
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2 battery-operated flashlights.
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horn.
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a safety valve.
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spare electrical fuses.
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17.
To maintain alertness while driving, you should:
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have another person ride with you.
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avoid heavy foods.
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avoid medications that cause drowsiness.
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All of the above.
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18.
When driving in heavy traffic, the safest speed is:
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slower than the speed of the traffic.
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the speed of other vehicles, up to the posted limit.
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5 mph below the posted speed limit.
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the posted speed limit.
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19.
To prevent fire, you should:
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inspect the electrical, fuel, and exhaust systems.
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inspect tires and cargo.
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check that the fire extinguisher is charged.
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All of the above.
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20.
If you are carrying a heavy load that is slowing you down, you should:
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drive in the right lane.
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keep the vehicle in third gear.
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drive in the left lane.
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drive on the shoulder.
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