CDL PRACTICE TEST (CO) - GENERAL KNOWLEDGE TEST
11.
When driving a 50-foot truck at 40 mph, your minimum following distance should be:
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5 seconds
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8 seconds
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6 seconds
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4 seconds
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12.
when you apply the service brake at 5 mph, which of the following might indicate a problem?
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The tongue/draw-bar is not bent.
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The vehicle pulls to one side or the other.
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The vehicle stops when the brake is applied.
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All the other answers are correct.
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13.
You should use your four-way emergency flashers:
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when driving at night.
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while crossing railroad tracks.
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when parked at the side of the road.
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None of the above.
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14.
Most heavy trucks with manual transmissions require ____ to change gears.
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double clutching
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single clutching
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triple clutching
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None of the above.
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15.
Retarders:
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can be noisy and may not be permitted everywhere.
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increase fuel efficiency.
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help to increase brake pressure.
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improve traction.
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16.
On ramp/off ramp curves should be taken:
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at the posted speeds.
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slightly above the posted speeds.
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well below the posted speeds.
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slightly below the posted speeds.
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17.
The most common cause of skidding is:
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surface water.
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black ice.
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spilled oil.
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driving too fast for conditions.
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18.
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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speed up.
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come to a complete stop.
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further reduce your speed.
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19.
Which of the following statements about managing space is true?
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Smaller vehicles require more space to stop than larger ones.
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Full tank vehicles may take longer to stop than empty ones.
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If you find yourself being tailgated, you should increase your following distance.
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You need at least 1 second for each 10 feet of vehicle length at speeds above 40 mph.
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20.
When using a turn signal, which of the following is NOT true?
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You should signal continuously.
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You should signal early.
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You should turn off your turn signal after you've turned.
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You should cancel the signal before completing the turn.
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