GENERAL KNOWLEDGE CDL TEST IDAHO - PRACTICE TEST
21.
When only the tractor has ABS:
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the trailer is less likely to swing out.
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you should be able to maintain steering control during braking.
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there is a greater chance of jackknifing.
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22.
Which of the following statements about over-the-counter drugs is true?
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They are not considered drugs.
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They may affect safe driving ability.
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They can be used while on duty, as long as you drink coffee to stay awake.
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23.
To warn drivers behind you that you will be slowing down, you should:
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tap your brake pedal a few times to flash your brake lights.
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turn on the parking, clearance and side-marker lights.
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turn on the right and left turn signals at the same time.
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24.
The distance your vehicle travels, in ideal conditions, from the time you see a hazard until your brain recognizes it, is called:
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Stopping distance
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Reaction distance
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Perception distance
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25.
It is important to shift gears correctly to keep:
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control of the vehicle.
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the engine cool.
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the engine oil flowing.
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26.
Loads that are over-length, over-width and/or overweight:
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require special transit permits.
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may require special equipment such as “wide load” signs, flags and flashing lights.
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All of the above.
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27.
What is the minimum tread depth for front tires?
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1/32 inch
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4/32 inch
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1/2 inch
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28.
When driving a modern truck, the gear you should be in before starting down a hill is usually_____ the gear required to climb the same hill.
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lower than
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the same as
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higher than
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29.
When backing, it is important to use a helper whenever possible. Why?
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Because you cannot see everything behind your vehicle.
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To make sure you don't damage your truck.
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Because it's required by law.
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30.
When driving on packed snow, you should reduce speed by:
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10%.
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one-third.
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a half.
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