SD CDL Practice Test - General Knowledge
31.
Which surface is the most slippery?
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Dry road
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Wet ice
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Wet pavement
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Ice that is not wet
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32.
The law requires __________ to inspect a commercial motor vehicle before a trip.
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the driver
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a qualified inspection technician
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a qualified testing engineer
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the owner
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33.
When backing a truck you should:
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look straight ahead.
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back and turn toward the right side.
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always rely on your mirrors.
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get out and walk around the vehicle before you begin to back.
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34.
To avoid becoming a distracted driver you should:
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avoid typing or reading a text message on a mobile device while driving.
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clear the vehicle of any unnecessary objects.
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plan your route before you begin driving.
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All of the above.
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35.
You are inspecting your vehicle during a trip. What should you do?
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Check critical items such as tires, brakes, and lights.
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Watch gauges for signs of trouble.
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Use your senses to check for problems.
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All of the above.
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36.
If you are driving a 50 foot truck and you are traveling at 55 mph, you should have at least _________ of following distance.
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5 seconds
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6 seconds
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3 seconds
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12 seconds
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37.
In which of the following situations should you check your mirrors more often?
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When driving on a single lane road.
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When changing lanes or merging.
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While stopped at an intersection.
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When driving on a narrow road.
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38.
When the spring brakes are on, you should never:
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decrease your speed.
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change lanes.
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push the brake pedal down.
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upshift.
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39.
When you discover a fire, if the trailer doors are hot you should not open them because:
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opening the doors lets air in and may make the fire flare up.
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you should use the fire extinguisher on the door.
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with air many fires do less damage.
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the temperature of the trailer should not be changed in any way.
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40.
Which of the following is a reason to cover cargo?
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To protect the cargo from weather
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To contain a spill
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To protect people from spilled cargo
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All of the above.
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