AIR BRAKES CDL 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.
The most common foundation brakes found on vehicles with air brakes are the:
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wedge brakes.
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disc brakes.
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S-cam brakes.
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2.
Some air brake systems have an alcohol evaporator to:
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reduce the stopping power of the vehicle.
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reduce the danger of slipping.
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prevent ice from forming in the brake system.
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3.
Perception Distance + Reaction Distance + Brake Lag Distance + Braking Distance = ?
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Total Stopping Distance
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Total Air Pressure
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Stopping Distance - (minus) Brake Fade Distance
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4.
To avoid becoming a distracted driver you should:
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adjust all vehicle controls and mirrors while driving.
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not turn off all communication devices.
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not engage in complex conversations with others.
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5.
Older trailers do not have spring brakes. If the air supply leaks away:
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the ABS won't work properly.
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the trailer will stop normally.
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there will be no emergency brakes.
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