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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 Hawaii CDL knowledge test. The HI 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 Hawaii CDL Manual. Take this HI CDL practice test now to prepare for the actual air brakes test!
1. The total stopping distance for vehicles with air brake systems is made up of __ different factors.
2. A low air pressure warning signal is required on:
all vehicles with air brakes.
all vehicles with air brakesĀ built after 2009.
all vehicles with air brakes built after 2005.
3. When the spring brakes are on, you should never:
push the brake pedal down.
change lanes.
4. Brake fade results from, and is affected by:
brakes out of adjustment.
excessive heat caused by using the brakes too much.
All of the above.
5. Typically an air system is fully-charged at:
125 psi
75 psi
25 psi
6. Antifreeze:
helps the engine only when the temperature is below freezing.
helps the engine only under hot conditions.
helps the engine under hot conditions as well as cold conditions.
7. The trailer hand valve should:
never be used for parking.
be used in driving.
never be used to test the trailer brakes.
8. ABS:
helps you avoid skids caused by over braking.
helps you stop faster.
improves your visibility at night.
9. The parking brake:
should be used when you need to apply the brakes firmly.
should be used whenever you park.
should be used when driving in bad weather.
10. How can you tell if your vehicle is equipped with ABS?
Look for yellow ABS malfunction lamps on the instrument panel.
Trailers will have yellow ABS malfunction lamps on the left side.
All of the above.
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HI Air Brakes Test

Number of questions: 25
Correct answers to pass:20
Passing score:80%
Number of questions: 25
Correct answers to pass:20
Passing score:80%
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