IDAHO CDL AIR BRAKES PRACTICE TEST
21.
When should you downshift automatic transmissions?
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When going down steep grades.
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When you start to get drowsy.
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Watch your tachometer, and downshift when your engine reaches the top of the range.
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22.
With a dual air brake system:
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each system has its own air tanks, hoses and lines.
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each system shares the same lines and hoses.
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each system shares air tanks.
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23.
The supply pressure gauges tell you how much air pressure:
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you are applying to the brakes.
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is in the air tanks.
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is going to the brake chambers.
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24.
Overloading a vehicle with cargo can have negative effects on all of the following except:
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Braking
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Steering
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Weight limits
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25.
If your trucks has a high center of gravity, which of the following is true for curves?
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You should travel at the posted speed limit.
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You should slow down, as your truck can roll over at the posted speed limit for the curve.
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Reduce your speed to a crawl.
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