All your missed questions are saved
automatically for extra practice.
It's a practice test that's automatically made up of all your missed questions. Once you finish this test, you’ll be able to revisit your Challenge Bank™ to practice and sharpen your skills.
View All PlansAdding difficult questions to Challenge Bank™ is an exclusive Premium feature. Unlock access to 650+ exam-like questions, a Pass Guarantee, personalized study plans, and more.
View All PlansPlanning to drive commercial motor vehicles (CMVs) equipped with air brakes in Hawaii? Passing the CDL Air Brakes Knowledge Test and the Skills Test (in an air brake-equipped vehicle) is a necessity. Most CMVs, including tractor-trailers, combination vehicles, and even large school buses, are air brake-equipped and require this qualification (among other qualifications). When you pass the Hawaii DMV Air Brakes Knowledge Test and Skills Test, the “L” restriction is removed from your commercial driver license (CDL). Without passing these two tests, the “L” remains, and you simply cannot legally operate CMVs equipped with air brakes.
The Hawaii CDL Air Brakes Knowledge Test consists of 20 multiple-choice questions, and you must answer at least 16 correctly (80%) to pass. If you don’t pass, you must wait at least one business day before retesting and may be charged a retest fee. Delays and added fees are precisely what we want to help you avoid. Our experts have crafted the perfect Air Brakes Practice Tests to help ensure you pass your official exam on the first attempt.
Our practice tests mirror the DMV format and are based on the latest CDL Manual. You’ll be completely comfortable and familiar with the official test before you even arrive at the testing site, helping you relax and ace the exam. Our practice tests uncover many of the common traps, distractors, tricky wording, and use of double negatives that often appear on the official exam. Each response you provide on our practice tests is met with helpful hints as needed, explanations, and immediate AI-powered feedback to speed learning. You’ll work alongside an interactive CDL handbook and a Challenge Bank that remembers questions that you miss and asks them again later to ensure you learn the material. Once you have a handle on this practice test, try another one: https://driving-tests.org/hawaii/hi-cdl-air-brake-practice-test/.
Major industries like construction, agriculture, logistics, and inter-island freight transport include many employers eager to hire air brake-qualified drivers. Such companies include Grace Pacific, Hawaii Transfer Company, and Young Brothers. The opportunities for skilled and qualified drivers across the islands are incredible.
You should also consider preparing for and passing the CDL Combination Vehicles Test, which is one of the requirements for obtaining a Class A License. We have practice tests for that as well: https://driving-tests.org/hawaii/hi-cdl-combination-test/. You can also enhance your employability by adding endorsements such as T (Doubles/Triples), N (Tank Vehicles), H (Hazardous Materials), or X (Tank + Hazmat). Check out one of our Hawaii Endorsement Practice Tests here: https://driving-tests.org/hawaii/hi-cdl-hazmat-practice-test/.
Chief Educational Researcher, Driving‑Tests.org (ACES member)
Last verified for accuracy on
Methodology & Editorial Policy
questions
correct answers to pass
passing score
Driver’s Ed is - nobody wants to set foot inside the DMV. That’s why millions of learners trust us for simple, visual, effective prep.
We are an officially recognized FMCSA Entry-Level Driver Training provider and a proud partner to over 2,500 libraries. We work with safety organizations like GHSA and the National Safety Council to help create safer roads for everyone.
Our trademarked system automatically saves questions you miss, creating personalized tests that target your weak spots until you’ve mastered the material.
Get smarter as you study. Our new AI-powered feedback provides detailed, question-level insights to help you understand the why behind each answer.
Go beyond the boring black-and-white manual. Our interactive handbook lets you read, listen with an MP3 audio version, or even chat with it to find the information you need, faster.
