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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 Florida CDL knowledge test. The FL 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 Florida CDL Manual. Take this FL CDL practice test now to prepare for the actual air brakes test!
1.
The Johnson bar is a valve that:
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reduces the braking pressure to a safe level.
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is installed in the first tank the air compressor pumps air to.
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keeps air from going out if the air compressor develops a leak.
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works the trailer brakes.
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2.
To operate a vehicle equipped with air brakes, you must pass the air brakes knowledge test. Why?
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If you don't, you will only receive a CDL permit.
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If you don't pass the air brakes test, you can't get a CDL.
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If you don't pass the air brakes test, you will be restricted to driving vehicles without air brakes.
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All trucks have air brakes.
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3.
If a load is 10 feet long, the minimum number of tie-downs required is:
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4
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3
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2
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1
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4.
Air tanks usually hold enough compressed air to allow the brakes to be used _________ even if the compressor stops working.
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for one day
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for 3 days
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for one stop
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several times
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5.
Which of the following is not a way to know when to change gears?
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Use road speed (mph)
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Use engine speed (rpm)
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Check that the pressure gauge shows normal oil pressure
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Watch your tachometer
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