GENERAL KNOWLEDGE CDL TEST ARIZONA - PRACTICE TEST
21.
To avoid becoming distracted while driving, you should:
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plan your route before you begin driving.
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adjust all vehicle controls and mirrors prior to driving.
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All of the above.
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22.
When checking tires, which of the following is not a problem?
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Too much air pressure
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Cracked valve stems
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4/32 inch tread depth on front tires
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23.
Having ABS on only the trailer:
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is very dangerous.
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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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24.
If your brakes fail while you are driving on a downgrade, you should:
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take the least hazardous escape route you can.
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use an escape ramp if it's available.
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All of the above.
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25.
An anti-lock braking system (ABS):
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helps you avoid skids caused by over braking.
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helps you avoid wheel lock up.
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All of the above.
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26.
When driving a 50 foot vehicle at 50 mph, how much space should you keep in front of you?
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6 seconds
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4 seconds
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5 seconds
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27.
Under-loaded front axles can:
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cause poor traction.
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make the steering axle weight too light to steer safely.
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All of the above.
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28.
Before starting down a hill, you should slow down and shift down:
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to a gear that will cause your engine to exceed its redline.
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so you can coast downhill.
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to a speed that you can control without using the brakes hard.
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29.
When you drive a tractor-trailer combination with ABS, you should:
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apply the trailer hand brake whe braking.
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pump the brakes.
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brake as you always have.
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30.
To avoid a crash:
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stopping is always the safest thing to do.
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stopping is not always the best thing to do.
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swerving is always the worst thing to do.
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