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 | => | 25% |
| 80-89 | => | 63% |
| 70-79 | => | 13% |
| 60-69 | => | 0% |
| <60% | => | 0% |
The dreaded “L” restriction. That tiny letter code on your CDL keeps you from legally driving commercial motor vehicles (CMVs) equipped with air brakes. If you’re looking to remove that restriction and immediately expand your driving career options, you’ve come to the right place. In order to drive air brake-equipped vehicles, you’ll need to pass both the Minnesota DVS CDL Air Brakes Knowledge Test and the Skills Test in an air brake-equipped vehicle. Our CDL Air Brakes Practice Tests are perfect for helping you pass the knowledge test on the first attempt.
Based on the most recent Minnesota CDL Manual, our practice tests mirror the format of the real exam, helping you become familiar with its structure before you even walk into the testing site. The CDL Air Brakes Knowledge Test consists of 25 multiple-choice questions, and you’ll need at least 16 correct answers (80%) to pass. If you don’t pass on your first attempt, you must wait one business day and pay a fee before retesting.
Our expert-crafted Air Brakes Practice Tests help eliminate any delays and added fees. They provide instant AI-driven feedback, hints as needed, and an interactive CDL Manual. Our state-of-the-art Challenge Bank of questions remembers any you missed and recycles them to ensure you master the material quickly and efficiently. Having removed any unnecessary fluff found in other study guides, we get straight to the material needed to pass the exam. Check out our other Air Brakes Tests here: https://driving-tests.org/minnesota/mn-cdl-air-brake-practice-test/.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
Passing the Air Brakes Knowledge Test opens the door to a strong career in Minnesota’s transportation industry. There is high demand in industries like agriculture and livestock transport, construction and heavy-equipment hauling, manufacturing and logistics, and regional and long-haul freight. With major roadways like Interstates 35, 90, and 94 connecting the state to the rest of the Midwest, employers like FedEx Freight, TMC Transportation, and regional carriers regularly hire air brake-qualified drivers.
Many drivers also choose to add endorsements such as T – Doubles/Triples, N – Tank Vehicles, H – Hazardous Materials, and X – Tank and Hazmat Combined. Each endorsement enhances your versatility and earning potential. Be sure to check out our series of Endorsement Practice Tests to get started: https://driving-tests.org/minnesota/mn-cdl-hazmat-practice-test/. Also, because nearly all combination vehicles use air brakes (and you’re already tackling that requirement), why not continue your studies and prepare for the Combination Vehicles Knowledge Test, which is one of the requirements needed to obtain a Class A License? Knock it all out while you have this great momentum going. Our Combination Vehicles Practice Tests can help you here as well: https://driving-tests.org/minnesota/mn-cdl-combination-test/.
Driver’s Ed is - nobody wants to set foot inside the DVS. 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 MN 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 DVS.
