CDL AIR BRAKES PRACTICE TEST - NEW MEXICO
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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 New Mexico CDL knowledge test. The NM 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 New Mexico CDL Manual. Take this NM CDL practice test now to prepare for the actual air brakes test!
1.
When you release the brake pedal, the _____ rotates back and a spring pulls the brake shoes away from the drum.
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air compressor belt
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pressure gauge
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S-cam
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2.
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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100 psi.
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75 psi.
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130 psi.
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3.
You are driving a vehicle with air brakes when the low air pressure warning light and buzzer come on. You should:
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slow down and test your brakes.
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pull off the road and stop immediately.
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activate your hazard lights and drive to the nearest place where you can stop.
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4.
The tractor protection valve:
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provides the air supply for the brake system.
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will close automatically if the air pressure drops to a certain level.
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All of the above.
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5.
What is a dual air brake system?
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2 separate air brake systems: one system operates the left brakes, the other system operates the right brakes.
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2 separate air brake systems: one system operates the front brakes, the other system operates the rear brakes.
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2 separate air brake systems: one system for daytime driving, the other system for nighttime driving.
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