DE CDL GENERAL KNOWLEDGE TEST - CDL PRACTICE TEST
21.
You should schedule trips for:
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any time that fits your schedule.
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the hours you are normally awake.
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the middle of the night.
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the middle of the day.
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22.
A low air pressure warning signal must come on when the air pressure in the tanks falls below:
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100 psi.
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15 psi.
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10 psi.
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60 psi.
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23.
If your brakes fail on a steep mountain downgrade, you should:
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stay on the road and keep looking for the next available escape ramp.
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set the parking brake and park in an open area.
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decide what to do as soon as you know your brakes do not work.
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slow down until your vehicle comes to a complete stop.
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24.
During the vehicle inspection, when checking the tires you should:
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ensure that the tread is evenly worn.
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ensure that valve caps are missing.
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ensure the middle of the tires is more worn than the outside.
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check for the minimum tread depth (4/32 on all tires).
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25.
Name some exhaust system parts.
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Mufflers, mounting brackets and vertical stacks
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Main spring, axle and font axle hanger
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Drag link, spindle and gear box
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Pitman arm, hydraulic fluid reservoir and tie rod
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26.
Which of the following is true about curved mirrors?
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In a curved mirror things seem closer than they really are.
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They are illegal in most States.
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In a curved mirror everything appears smaller than it would if you were looking at it directly.
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None of the above.
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27.
Service lines are often coded with the color ____ to keep from getting them mixed up with the emergency line.
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yellow
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blue
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orange
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red
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28.
Road rage is defined as:
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unnecessarily honking your horn.
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driving over the speed limit.
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driving with the intent of doing harm to others.
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operating a motor vehicle in a selfish, pushy manner.
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29.
Alcohol:
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impairs depth perception.
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improves muscle coordination.
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improves reaction time.
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does not affect judgement.
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30.
You have two tie-downs on a 15 foot load. How many more tie-downs do you need to secure cargo and keep it from shifting or falling?
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None
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Three
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Two
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One
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