CDL GENERAL KNOWLEDGE TEST (DC) - PRACTICE TEST
31.
The height of a vehicle's center of gravity is important for safe handling. Why?
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Trucks with a high center of gravity can roll over at the posted speed limit for a curve.
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Trucks with a high center of gravity have better traction.
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A high center of gravity means you are less likely to tip over.
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All of the above.
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32.
For proper steering, steering wheel play should be no more than:
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10 degrees.
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30 degrees.
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50 degrees.
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25 degrees.
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33.
During a pre-trip inspection, when checking the power steering hoses, you should:
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look for broken or distorted coil springs.
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check for leaks.
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check for damaged or bent rims.
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check that the brake chambers are not leaking.
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34.
Distracted driving may be caused by _________ while driving.
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listening to music
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maintaining constant speed
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eating
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All of the above.
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35.
Which of the following statements about drugs is true?
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Some "controlled substances" are allowed to reduce fatigue.
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All over-the-counter drugs are safe to use while on duty.
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Use of drugs can lead to traffic accidents.
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Possession and use of a drug given to a driver by a doctor is never permitted.
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36.
If you become drowsy while driving, you should:
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open the windows to get some fresh air.
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drink plenty of coffee.
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take a break.
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try to fight it.
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37.
Name some exhaust system parts.
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Drag link, spindle and gear box
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Main spring, axle and font axle hanger
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Mufflers, mounting brackets and vertical stacks
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Pitman arm, hydraulic fluid reservoir and tie rod
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38.
When you are driving on a slippery road, you should NOT:
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take curves at slower speeds.
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use the engine brake or speed retarder.
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adjust turning and braking to road conditions.
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keep a longer following distance.
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39.
The most important reason for doing a vehicle inspection is:
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Safety
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Liability insurance
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Employer liability
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Property damage requirements
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40.
Having ABS on only the trailer:
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makes the trailer more likely to roll over.
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still gives you more control over your vehicle during braking.
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makes the trailer more likely to swing out.
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is very dangerous.
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