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 Plans| 90-100 | => | 11% |
| 80-89 | => | 32% |
| 70-79 | => | 29% |
| 60-69 | => | 23% |
| <60% | => | 6% |
Do you want to operate commercial motor vehicles (CMVs) with air brakes? Our Arizona MVD CDL Air Brakes Practice Tests are designed to help you pass your knowledge exam on the first attempt. Failing the air brakes knowledge test in Arizona results in a one-day waiting period and a retest fee. Until you pass, your CDL will include the restriction “L,” preventing you from operating CMVs with air brakes. Given Arizona’s diverse terrain, from high-heat deserts in the south to steep mountain descents (especially between Phoenix and Flagstaff), air brakes are essential for maintaining vehicle control. Major highways, including I-10, I-40, I-17, and Routes 60 and 87, are crucial for freight transport and present diverse challenges that rely heavily on air brakes and qualified drivers. Since most semi-trucks and tractor-trailers rely on air brakes, with this restriction, your job opportunities will be significantly limited.
Industries across the Grand Canyon State rely on drivers with the air brake qualification. Some key industries include tourism, mining, agriculture, and aerospace. Major companies requiring the air-brake qualification include Freeport-McMoran and Asarco in the mining sector and Knight Transportation, Swift Transportation, and XPO Logistics in the logistics sector. Additionally, charter bus companies like Greyhound Lines, Arrow Stage Lines, and Tour West America rely on air brakes-qualified drivers, as does virtually every school district in the state that operates full-size school buses. Having an “L” restriction on your CDL prevents you from legally operating CMVs with air brakes, making the above-listed jobs unattainable.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
Our CDL Air Brakes Practice Tests help you master essential concepts and pass your official MVD Air Brakes Knowledge Test. The information you learn will also be useful as you practice inspecting and operating CMVs to pass your skills test. The skills test includes inspection, hands-on testing for air pressure and leaks, and air brake-equipped vehicle operation. The written Air Brakes knowledge test consists of multiple-choice questions based on the state’s CDL manual (Arizona CDL Handbook 2026) and requires a score of at least 80% to pass.
Our Practice Tests are designed to mimic what you will face on the official knowledge test and offer real-time feedback on all responses. This proven approach enhances retention, reinforces key concepts, and ensures you’re prepared to confidently pass the test on your first attempt.
Driver’s Ed is - nobody wants to set foot inside the MVD. 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.
We build our practice questions from the current 2026 AZ Driver Handbook and refine them using patterns recent test‑takers report.
Driver handbook • Knowledge‑test/permit overview • Fees & ID requirements • Office/appointment info
We mirror recurring themes (e.g., right‑of‑way traps, sign look‑alikes) and use similar distractors and wording styles.
We don’t collect or publish actual test items and we’re not affiliated with MVD.
