- Alabama: Test 1 / Test 2
- Alaska: Test 1 / Test 2
- Arizona: Test 1 / Test 2
- Arkansas: Test 1 / Test 2
- California: Test 1 / Test 2
- Colorado: Test 1 / Test 2
- Connecticut: Test 1 / Test 2
- Delaware: Test 1 / Test 2
- District of Columbia: Test 1 / Test 2
- Florida: Test 1 / Test 2
- Georgia: Test 1 / Test 2
- Hawaii: Test 1 / Test 2
- Idaho: Test 1 / Test 2
- Illinois: Test 1 / Test 2
- Indiana: Test 1 / Test 2
- Iowa: Test 1 / Test 2
- Kansas: Test 1 / Test 2
- Kentucky: Test 1 / Test 2
- Louisiana: Test 1 / Test 2
- Maine: Test 1 / Test 2
- Maryland: Test 1 / Test 2
- Massachusetts: Test 1 / Test 2
- Michigan: Test 1 / Test 2
- Minnesota: Test 1 / Test 2
- Mississippi: Test 1 / Test 2
- Missouri: Test 1 / Test 2
- Montana: Test 1 / Test 2
- Nebraska: Test 1 / Test 2
- Nevada: Test 1 / Test 2
- New Hampshire: Test 1 / Test 2
- New Jersey: Test 1 / Test 2
- New Mexico: Test 1 / Test 2
- New York: Test 1 / Test 2
- North Carolina: Test 1 / Test 2
- North Dakota: Test 1 / Test 2
- Ohio: Test 1 / Test 2
- Oklahoma: Test 1 / Test 2
- Oregon: Test 1 / Test 2
- Pennsylvania: Test 1 / Test 2
- Rhode Island: Test 1 / Test 2
- South Carolina: Test 1 / Test 2
- South Dakota: Test 1 / Test 2
- Tennessee: Test 1 / Test 2
- Texas: Test 1 / Test 2
- Utah: Test 1 / Test 2
- Vermont: Test 1 / Test 2
- Virginia: Test 1 / Test 2
- Washington: Test 1 / Test 2
- West Virginia: Test 1 / Test 2
- Wisconsin: Test 1 / Test 2
- Wyoming: Test 1 / Test 2
Free Hawaii CDL Air Brakes Test 2025
Part of mandatory Entry-Level Driver Training Course Based on 2025 HI commercial driver's license manualAvailable in EN, ES
30questions
6mistakes allowed
80%passing score
Today, you will be answering multiple-choice questions that will allow you to become a safer driver and more prepared for your DMV CDL air brake exam, which is required so that you can drive a commercial vehicle with air brakes. Each question, based carefully on the Hawaii Commercial Driver License Manual, has a hint and explanation, and we recommend that you read the explanations, as they will make you more knowledgable and ready for future questions on your real DMV exam. Practice as many times as necessary, until you achieve a satisfactory score and you feel calm and ready. Good luck now, and on your future exam!
Perfect for
- First-time HI CDL and CLP applicants
- CDL holders adding endorsements
- HI CDL renewal applicants
What to expect on the actual exam
| How many questions | 25 |
|---|---|
| How many correct answers to pass | 20 |
| Passing score | 80% |
Unlock all 1,500+ exam-like questions for Hawaii. Pass Guarantee
Become a member to unlock our extensive library of 1,500+ exam-like questions and get your Hawaii ELDT certification online. Official FMCSA-approved national Entry-Level Driver Training provider.
Pass the first time, guaranteed
List of questions (classic view)
- Spring brakes are
- How would you check your truck's slack adjusters?
- An anti-lock braking system (ABS)
- Which of the following is NOT part of the braking process when driving a tractor-trailer combination vehicle with an anti-lock braking system (ABS)?
- Under which conditions are front wheel brakes good?
- At what measurement is the safety valve USUALLY set to open?
- Which of the following will be true about your brake function if your anti-lock braking system (ABS) fails?
- The tractor protection valve
- Which of the following is NOT part of the air brake system?
- When should you drain your air tanks?
- After the initial drop, the maximum acceptable leakage rates per minute are
- What is the best way to test your vehicle's low air pressure warning signal?
- The purpose of a supply pressure gauge is
- Which of the following are true about a dual air brake system?
- If the air tanks are not drained,
- Which of the following should you do before leaving your vehicle unattended?
- Which of the following can cause brakes to fail or fade?
- 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?
- How do brakes work on a long, steep downgrade?
- When should you use the parking brake?
- Why must you study air brakes in the state of Hawaii?
- Slack adjusters are
- How can you tell if your vehicle is equipped with an anti-lock braking system (ABS)?
- Which of the following is NOT part of the drum brake?
- 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
More resources
You may also like
HI CDL Practice Test App
Download our free iOS or Android app and practice for your driving test offline or on the go.
10 Things You Should Do Before Your Driving Knowledge Exam (PDF)
Many people do their best but still get to the DMV overconfident and underprepared because they fail to do some of the simple...
Open PDF
Are you in another state?