- 0 Incorrect (6 allowed to pass)
- 0 Correct
- Updated for January 2025
- Based on 2025 RI commercial driver's license manual
Free Rhode Island CDL Air Brakes Test 2025
If you wish to drive the widest variety of commercial vehicles possible in the state of Rhode Island, you must have an air brakes qualification. This means passing the air brakes section of the Rhode Island CDL exam. Today you will be able to take a practice exam written with questions pulled directly from the RI DMV Commercial Driver License Manual’s section on air brakes. Each of the 30 multiple-choice questions also has a hint in case you get stuck, and an explanation. We recommend reading each explanation, as they provide deeper insight that you may need on the real DMV exam. Good luck on your future exam, practice often, and drive safely!
- Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
- Triple-checked for accuracy
What you need to know
What to expect on the actual RI DMV exam
questions
correct answers to pass
passing score
Helpful links
List of questions (classic view)
- How would you check your truck's slack adjusters?
- After the initial drop, the maximum acceptable leakage rates per minute are
- When should you drain your air tanks?
- Which of the following are true about a dual air brake system?
- Why must you pass a knowledge test on air brakes?
- Which of the following will be true about your brake function if your antilock braking system (ABS) fails?
- The purpose of a supply pressure gauge is
- How can you tell if your vehicle is equipped with an antilock braking system (ABS)?
- Which of the following can cause brakes to fade or fail?
- The tractor protection valve
- An antilock braking system (ABS)
- When should you use the parking brake?
- What is the best way to test if your vehicle's spring brakes come on automatically?
- Which vehicles must have low air pressure warning signals?
- Spring brakes are
- How do brakes work on a long, steep downgrade?
- Which of the following is NOT part of the braking process when you're driving a tractor-trailer combination vehicle with an antilock braking system (ABS)?
- Which of the following is NOT part of the air brake system?
- Under which conditions are front wheel brakes good?
- If the air tanks are not drained,
- Slack adjusters are
- Which of the following is NOT part of the drum brake?
- At what measurement is the safety valve USUALLY set to open?
- What is the best way to test your vehicle's low air pressure warning signal?
- Which of the following should you do before leaving your vehicle unattended?
- The low air pressure warning signal will come on before the pressure in the air tanks falls below
- A low pressure warning signal is required on
- All vehicles equipped with air brakes have
- With air brake-equipped vehicles, the parking brakes should be used
- The use of air brakes on a downgrade is only a supplement to the
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