CDL PRACTICE TEST - GENERAL KNOWLEDGE (DISTRICT OF COLUMBIA)
31.
When you are being tailgated, you should NOT:
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increase your following distance.
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avoid quick changes.
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turn on your taillights.
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All of the above.
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32.
To know when it's time to shift up:
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watch your tachometer, and shift up when your engine reaches the bottom of the range.
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use engine speed and road speed.
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use mirrors on both sides.
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check the user manual.
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33.
When possible, you should park:
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so you will have to back up when you leave.
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on the shoulder.
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so you will be able to pull forward when you leave.
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on the roadway.
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34.
At dawn, dusk, in rain or snow, to make yourself easier to see you should:
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use the high beams.
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use the emergency flashers.
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use the low beams.
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use the parking lights.
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35.
Which of the following is NOT a common cause of vehicle fires?
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Flammable cargo
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Broken fuel pipe
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Under-inflated tires
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Headlights out of adjustment
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36.
When you are driving in heavy traffic, the safest thing to do is to:
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drive at the posted speed limit.
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drive 10 mph below the speed of other traffic.
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drive 10 mph below the speed limit.
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drive at the speed of other traffic (without going at an illegal or unsafe speed).
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37.
Reaction distance is the distance you will continue to travel, in ideal conditions:
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from the time your eyes see a hazard until your brain recognizes it.
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before the vehicle comes to a complete stop.
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before you physically hit the brakes.
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All of the above.
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38.
ABS malfunction lamps are located:
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under the hood.
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on the driver'door.
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on the instrument panel.
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None of the above.
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39.
Which of these is NOT a thing to do when caring for the injured at the scene of a crash?
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If a qualified person is helping the injured, stay out of the way unless asked to assist.
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Stop heavy bleeding by applying direct pressure to the wound.
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Move a severely injured person if the danger of fire or passing traffic makes it necessary.
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Keep the injured persons cool.
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40.
While crossing railroad tracks, you should:
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shift up.
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shift down.
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stop, then look and listen for the train.
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not shift gears.
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