Air Brakes CDL Practice Test - Arizona
6.
When the air system is fully-charged, the air loss rate for a single vehicle with the engine off should be less than:
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3 psi in one minute.
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2 psi in 30 seconds.
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2 psi in one minute.
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7.
You should always try to back toward the driver's side because:
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backing toward the left side is more dangerous.
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you can watch the rear of your vehicle out the side window.
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None of the above.
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8.
When should you downshift automatic transmissions?
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When going down steep grades.
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Watch your tachometer, and downshift when your engine reaches the top of the range.
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When you start to get drowsy.
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9.
Dual tires:
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should always come in contact with each other.
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should come in contact with each other whenever possible.
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should not come in contact with each other.
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10.
The ________ brake system applies and releases the brakes when the driver uses the brake pedal during normal driving.
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parking
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emergency
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service
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