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If you plan to drive air brake-equipped vehicles, you’ll need to pass the Michigan SOS CDL Air Brakes Knowledge Test and the behind-the-wheel Skills Test in an air brake-equipped vehicle. Passing these tests will remove the “L” restriction from your CDL and permit you to operate vehicles equipped with air brakes. Simply put, until you pass these tests, all jobs that involve air brakes are off limits. Rest assured, you are taking the right step in enhancing your career options, and our series of expert-crafted Air Brakes Practice Tests is the perfect tool to help ensure you pass the official knowledge exam on your first attempt!
The CDL Air Brakes Knowledge Test includes 25 multiple-choice questions, and you’ll need to score at least 80% (16 correct answers) to pass. If you don’t pass, you must wait one business day before retesting and pay a retesting fee. To help you avoid retakes, our free CDL Air Brakes Practice Tests are designed to mirror the official exam and come with AI-driven feedback, hints, and question structures based on the official Michigan CDL Manual. Not only that, but we include an interactive CDL Manual and a Challenge Bank of questions designed to recycle any that you miss until you’ve mastered the material. Once you have a handle on this practice test, try another one from our series: https://driving-tests.org/michigan/mi-cdl-air-brake-practice-test/.
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Earning your air brake qualification opens the door to amazing opportunities in industries that keep Michigan’s economy moving forward. These include automotive manufacturing and logistics in Detroit, forestry and construction hauling in the Upper Peninsula, and agriculture and food transport (milk, cherries, and corn) mainly in the Lower Peninsula. Major routes like I-75, I-96, I-94, and US-23 serve as the infrastructure that makes product (and people) transport in the state a lucrative career.
Most CMVs are equipped with air brakes, so it’s wise to prepare for the Air Brakes Knowledge Test. Since you’re taking care of that requirement now, why not take it a step further and take a look at our Combination Vehicles Practice Tests, which prepare you for one of the requirements for a Class A License: https://driving-tests.org/michigan/mi-cdl-combination-test/. You can also expand your job opportunities by adding endorsements for HazMat (H), Tanker (N), or Double/Triple Trailers (T), each with our own set of practice tests based on the CDL Manual: https://driving-tests.org/michigan/mi-cdl-hazmat-practice-test/.
Use our practice tests and get ready to roll!
Driver’s Ed is - nobody wants to set foot inside the SOS. 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 2025 MI 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 SOS.
