All your missed questions are saved
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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.
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View All Plans| 90-100 | => | 24% |
| 80-89 | => | 33% |
| 70-79 | => | 15% |
| 60-69 | => | 18% |
| <60% | => | 9% |
Removing the “L” air brake restriction from your Maryland Commercial Driver’s License (CDL) increases your driving opportunities. While you may appreciate the rich history of St. Mary’s City, you should consider the effect of the “L” restriction on your future job prospects. Most semi-trucks, tractor-trailers, and full-size buses are equipped with air brake systems. Air brakes allow you to regulate your speed while reacting to road situations. When transporting heavily weighted loads, your ability to operate air brakes is critical for navigating sharp turns and coming to a complete stop at intersections and in heavily congested traffic. Prospective employers, such as the Port of Baltimore and Payne Trucking, expect their drivers to be air brake-qualified, but you must be well trained.
Our Maryland MVA CDL air brake “endorsement” practice test will rapidly expand your knowledge of these systems. You’ll be challenged to pass a skills test in a vehicle with air brakes (including conducting an inspection of the air brakes) and pass an official Air Brakes knowledge test before the air brake restriction can be removed. The official knowledge test requires you to correctly answer at least 80% of its 25 questions to earn a passing score.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
This Maryland MVA CDL air brake “endorsement” practice test provides reliable information for overcoming your learning obstacles. It contains 30 questions similar to those on the official knowledge test to assess your proficiency and identify the information you must study more. You’ll be able to establish a solid basis for developing a study plan to meet the requirements for an air brake qualification.
The practice test is based on the most recent Maryland MVA CDL manual (Maryland CDL Handbook 2025) and is up to date as of December 2025. If you get a question wrong, the practice test offers a thorough explanation of the correct answer using information taken directly from the CDL manual. This approach clears your misunderstandings and fills your knowledge gaps with authoritative information that may be applied to various driving scenarios on the official knowledge test.
Unlike the practice test, traditional study methods are not designed to provide comprehensive instruction for obtaining an in-depth understanding of air brake operations. Traditional study methods are focused on helping you to memorize the answers to the questions without helping you correct the questions you get wrong. The practice test places this information at your fingertips, boosts your confidence, and increases your chances of passing the official knowledge test on your first try.
Ocean City is a popular place for pilots learning to fly, and you can take your driving skills to great heights, using the practice tests at https://driving-tests.org/maryland/.
Driver’s Ed is - nobody wants to set foot inside the MVA. 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 MD 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 MVA.
