AIR BRAKES PRACTICE TEST - INDIANA
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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 Indiana CDL knowledge test. The IN 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 Indiana CDL Manual. Take this IN CDL practice test now to prepare for the actual air brakes test!
1.
What factors can cause brakes to fade?
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Dirt roads and in unpaved yards.
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Slippery surfaces and shaded areas.
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Gravel and tar.
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Excessive heat and brakes out of adjustment.
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2.
You are driving on a steep downgrade. If your safe speed is 35 mph, you should apply the brakes when your speed reaches:
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35 mph
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45 mph
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25 mph
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30 mph
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3.
If the safety relief valve in the air brake system releases air:
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the valve is fully operational.
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this will supply more power to the drive wheels.
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something is wrong.
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this will supply more power to the brakes.
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4.
With the controlled braking method, you:
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apply the brakes all the way and release brakes when the wheels the lock up.
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apply the brakes as hard as you can without locking the wheels.
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push down on the brake pedal as hard as you can so that the wheels the lock up.
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None of the above.
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5.
If stopped on a hill, how can you start moving without rolling back?
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Partly engage the clutch before you take your right foot off the brake, put on the parking brake if necessary.
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Press on the gas pedal, even if you have to roll back a little.
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Release the parking brake before you have applied enough engine power to keep from rolling back.
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None of the above.
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