DISTRICT OF COLUMBIA CDL PASSENGER PRACTICE TEST
11.
Which of the following statements about speed management and braking is true?
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Driving below the posted speed limit will always allow you to stop safely.
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The total stopping distance of a bus is the distance your vehicle will travel, in ideal conditions, while you are braking.
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Stopping time increases by one second for each 10 mph over 30 mph.
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None of the above.
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12.
Before driving, you should _______ all access panels.
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open
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replace
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close
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remove
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13.
In a dual air brake system, if one air system is very low on pressure:
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you should drive and brake as you always have.
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you should pump the brakes to restore pressure.
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either the front or rear brakes will not be operating fully.
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the effect won't be noticeable for the first 50 miles.
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14.
When changing lanes, you should:
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turn sharply.
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ensure that the vehicle behind you has moved into your blind spot.
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do it slowly, so a driver you did not see may have a chance to honk their horn.
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do it quickly so other vehicles won't get into the lane.
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15.
If stopped on a hill, how can you start moving without rolling back?
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Partly engage the clutch before you take your right foot off the brake, put on the parking brake if necessary.
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Release the parking brake before you have applied enough engine power to keep from rolling back.
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Press on the gas pedal, even if you have to roll back a little.
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None of the above.
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16.
When inspecting your bus, make sure that:
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signaling devices are working.
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seats are safe for riders.
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emergency exit handles are in safe working condition.
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all of the above have been checked.
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17.
To avoid becoming an aggressive driver you should:
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speed up if you think you’re going to be late.
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give other drivers the benefit of the doubt.
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make gestures to other drivers.
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give other drivers your full attention.
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18.
How many red reflective triangles should you carry?
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5
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3
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2
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6
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19.
When driving in fog, drivers should:
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use low beams.
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use windshield washer antifreeze.
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use the windshield wipers.
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use high beams.
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20.
When you need to brake, you should warn the drivers behind:
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by making gestures.
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by flashing your brake lights.
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by changing lanes.
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by turning on the 4-way emergency flashers.
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