AIR BRAKES PRACTICE TEST - ARIZONA
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The air brakes endorsement applies to applicants who wish to drive a vehicle with air brakes in Class A, B, or C CDL. To drive a vehicle with air brakes, you must pass the air brake component of the Arizona CDL knowledge test. The AZ CDL air brakes test consists of 25 questions, and you'll need at least 20 correct answers to pass (80%). The test covers the information found in the air brakes section of the Arizona CDL Manual. Take this AZ CDL practice test now to prepare for the actual air brakes test!
1.
Before driving a truck or bus with a dual air brake system, the minimum pressure in both the primary and secondary
systems should be at least:
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75 psi.
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130 psi.
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100 psi.
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2.
When a tire fails, you must:
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hold the steering wheel firmly.
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stay off the brake.
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All of the above.
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3.
Older trailers do not have spring brakes. If the air supply leaks away:
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the trailer will stop normally.
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the ABS won't work properly.
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there will be no emergency brakes.
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4.
Supply pressure gauges tell you:
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how much pressure is in the air tanks.
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when the air pressure in the tanks falls below 60 psi.
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how much air pressure you are applying to the brakes.
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5.
Hydroplaning is more likely if:
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tire pressure is low.
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tire tread is worn.
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All of the above.
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