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Florida CDL Permit Test - Air Brakes

Number of questions: 25
Passing score: 20
Directions: This endorsement is required for driving a vehicle with air brakes. To receive this endorsement, applicants must pass a test. The test consists of 25 multiple choice questions. To pass, the applicant must answer at least 20 questions correctly. Test questions come from the Florida CDL Handbook. Questions come from chapters covering: Air Brakes. The Air Brakes endorsement may be used with the Class A, B or C CDL.
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Passing grade —
5 or fewer errors
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1.
In a newer vehicle, you apply the parking brake:
By using a diamond-shaped yellow knob.
By using a round red knob.
By using a square green knob.
By using a black round knob.
2.
What does ABS do?
Prevent wheel lockup
Prevent the air compressor from overheating
Prevent the front brakes from being used on ice
Prevent the brakes from being used if downshifting would be more effective
3.
To stop in a vehicle that uses air brakes, the driver should:
Pull the air brake lever.
Engage the brake lever.
Push the brake pedal down.
Pull the brake pedal up.
4.
Most heavy-duty vehicles use:
Single air brake systems.
Dual air brake systems.
Triple air brake systems.
Quadruple air brake systems.
5.
If the safety relief valve in an air brake system is releasing air:
You should not be concerned as this is a normal process.
There is something wrong with the brakes.
The valve is operational.
6.
The service brake system:
Applies and releases the brakes when you press the brake pedal while driving normally.
Applies and releases the parking brakes.
Applies and releases the emergency brake.
Applies and releases the axle brake.
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