MONTANA CDL AIR BRAKES PRACTICE TEST
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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 Montana CDL knowledge test. The MT 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 Montana CDL Manual. Take this MT CDL practice test now to prepare for the actual air brakes test!
1.
Before driving a vehicle with a dual air brake system, you should allow time for the air compressor to build up a minimum of ____ pressure in both the primary and secondary systems.
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50 psi
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35 psi
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150 psi
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100 psi
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2.
If your vehicle is equipped with air brakes, loss of air pressure in the
emergency line causes:
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the speed of your vehicle to increase.
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the trailer emergency brakes to come on.
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the trailer spring brakes to come on.
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All of the above.
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3.
In vehicles with air brakes, the two markings on a front brake limiting valve are:
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high and low.
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normal and slippery.
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left and right.
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wet and dry.
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4.
If you are feeling sleepy, you should:
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drive faster.
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slow down.
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pull off the road and rest.
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get some coffee.
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5.
After a tire has been changed, the driver should stop a short while later to:
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decrease tire pressure.
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check tread separation.
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deflate the tire to 10 psi.
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check the tightness of the nuts.
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