CDL GENERAL KNOWLEDGE TEST (ID) - PRACTICE TEST
21.
ABS will:
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shorten your stopping distance.
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increase your average speed.
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not change your normal braking capability.
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22.
The most important reason for doing a vehicle inspection is:
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Employer liability
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Liability insurance
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Safety
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23.
Emergency lines are often coded with the color ___ to keep from getting them mixed up with the service line.
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yellow.
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red.
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blue.
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24.
The Gross Combination Weight (GCW) is:
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the weight of the trailer and cargo.
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the weight of the vehicle, trailer, and cargo.
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the total weight of a single vehicle including its load.
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25.
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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26.
When crossing railroad tracks, you should:
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stop on the tracks.
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stay in your lane.
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shift gears while crossing the tracks.
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27.
Distracted driving may be caused by _________ while driving.
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reading billboards
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adjusting the radio
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All of the above.
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28.
The one-way check valve:
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keeps air from going out if the air compressor develops a leak.
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keeps your wheels from locking up when you brake hard.
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supplies air to the trailer air tanks.
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29.
_________ helps coordinate emergency response to chemical hazards.
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The Federal Transportation Organization
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The National Response Center
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The National Chemical Network
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30.
A red triangle with an orange center means:
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The vehicle is hauling hazardous materials
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Slow-moving vehicle
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Law enforcement vehicle
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