Free Hawaii CDL Air Brakes Test 2025

Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
Based on 2025 HI commercial driver's license manual
Triple-checked for accuracy
Updated for March 2025

Operating commercial motor vehicles (CMVs) with air brakes requires a specialized skill set. Our Hawaii DMV CDL Air Brakes Practice Tests are designed to help you pass your knowledge exam on the first attempt. If you don’t pass, your CDL will include the restriction “L,” preventing you from operating CMVs with air brakes. In Hawaii, where there are mountainous areas (Maui and the Big Island), winding roads (Hana Highway), and challenging tropical weather, the need for air brakes and drivers qualified to use them is critical. There are major coastal freight routes along the Queen Ka’ahumanu Highway (Big Island) as well as steep volcanic climbs on the Haleakala Highway (Maui) that require precise braking, not to mention the traffic congestion in tourism-heavy areas along the H-1, H-2, and H-3 freeways on Oahu. As most semi-trucks and tractor-trailers rely on air brakes, this qualification is essential for a driver’s overall job market success.

Industries across the Aloha State rely on drivers with the air brake qualification. Major companies requiring the air brakes qualification include Hawaiian Cement and Grace Pacific LLC. in the construction industry. The freight sector includes companies like Young Brothers and UPS, which hire a significant number of drivers with the air brakes qualification. So do charter bus companies like Roberts Hawaii and Polynesian Adventure Tours, public transit options offered by TheBus (Oahu), and school districts operating hundreds of Department of Education school buses. Passing the test to have the “L” restriction removed makes these jobs attainable.

Our practice tests help you pass your air brake knowledge test; however, the information you learn will also be useful as you practice to pass your skills test. The hands-on skills test includes inspecting components, testing for air pressure and leaks, and operating a vehicle equipped with air brakes. The written Air Brakes knowledge test features multiple-choice questions based on the official Hawaii CDL manual (Hawaii CDL Handbook 2025) and requires a score of at least 80% to pass.

Our CDL Air Brakes Practice Tests are designed to closely align with the official DMV knowledge test, mimicking the content and format you’ll encounter. Additionally, our practice test questions and answers provide responses in real time, a scientifically-backed approach for enhancing retention. You can learn quickly and be confident of passing your official exam.

4.5 out of 5 • 4 votes.

9 min to complete

Available in EN and ES

Pass the first time,
guaranteed with Premium

All 650 exam-like questions
specific to your state

Interactive learning with
AI personal tutor

Unique 360° Virtual Road
Simulations

Get your money back if you
don’t pass

What to expect on the actual HI DMV exam

questions

correct answers to pass

80%

passing score

Helpful links

HI DMV website

Official Hawaii CDL manual (2025)

More HI DMV Written Exam Resources

HI CDL Air Brakes Test (you are here)

Are you in another state?

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

Pass the first time with Premium

Our commitment to accuracy and quality in our practice tests

Explore our rigorous, multi-tiered verification process that ensures each question mirrors the official manual for unparalleled accuracy.

Written by Andrei Zakhareuski Updated over a week ago

At Driving-Tests.org, we understand the importance of reliable and accurate practice tests to help you prepare for your DMV exam. That's why we've developed a meticulous process to create and continually update our practice questions, ensuring they reflect the most current driving laws and regulations.

Here's an inside look at how we maintain the highest quality in our practice tests.

Content Creation and Verification Process

Alignment with Official Manuals:
Every question we develop is based on the most recent version of each state's official driving manual. Our team regularly monitors each state DMV's website for the latest updates to ensure our practice tests are always aligned with the most current information.
Community Feedback Integration:
We leverage feedback from our vast community of users to understand which topics are most frequently tested. This helps us focus on the areas that are most relevant and beneficial for your preparation.
Expert Content Creation:
Our in-house editor, Steven, who has extensive experience in driver education, crafts each question with precision. He conducts a thorough review of each question against the official manuals to ensure accuracy.
Rigorous Review Process:
Once Steven has finalized a set of questions, our team conducts a joint review session. This second level of scrutiny involves content accuracy, proofreading, and fact-checking to eliminate any errors.
User Feedback Mechanism:
After a question goes live on our site, we keep the lines of communication open. Each question features a feedback button, inviting users to report any issues or errors. This continuous feedback loop allows us to address and rectify any concerns promptly.
Responsive Updates:
In line with our commitment to accuracy, we quickly update our practice questions to reflect any changes in the DMV manuals. Additionally, we update the free electronic copy of the state's driver's license manuals on our site, typically within a few days after the DMV publishes them.

Our thorough quality control process ensures that you have access to practice tests that are as accurate and up-to-date as possible. We believe in the power of well-prepared drivers and are dedicated to providing you with the best study tools to help you succeed on your DMV exam.

FREE Hawaii CDL Air Brakes Test

Show Test description

Pass the first time, guaranteed

You test results are ready

Pass Your CDL Exams the First Time – Guaranteed

You’re moments from your results. Before viewing them, see how you can get your ELDT certificate and pass — at a fraction of what schools charge.

1,500 Real Exam‐Like Questions Covers every endorsement plus a Pass Guarantee.
FMCSA‐Approved ELDT Official certification, instant completion reporting.
99.06% Pass Rate vs. 49% Avg Trusted by over 1.15 million drivers to succeed first time.