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Without removing the air brake restriction from your Indiana Commercial Driver’s License (CDL), you will lack the qualifications for some of the most lucrative driving opportunities. Air brakes allow you to safely navigate changing road situations, such as adverse weather, sharp turns, and heavily congested traffic. If you do not understand how these systems operate, you risk not being able to slow down or come to a complete stop while carrying heavy loads. “On the Banks of the Wabash, (and) Far Away,” employers need drivers to operate semi-trucks and full-size buses. In both the public and private sectors, great driving opportunities are available, but you need to get the training that qualifies you.
Our Indiana BMV CDL air brake “endorsement” practice test addresses your specific learning obstacles to help you better understand air brake systems. To remove the air brake restriction from your CDL, you must exhibit your ability to conduct a physical inspection of the system, drive a vehicle equipped with air brakes, and pass an official Air Brakes knowledge test. You must correctly answer at least 80% of the 25 questions on the official knowledge test to attain a passing score. The practice test helps you develop a plan to achieve this score, using 30 multiple-choice questions that assess your current proficiency level and direct you to the information you should study to meet the requirement. This approach streamlines the learning process and leads you to a clear understanding of the information you must know about air brake systems.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
Unlike traditional study methods, this Indiana BMV CDL air brake “endorsement” practice test instructs you on correcting your deficiencies. The practice test is based on the most recent Indiana BMV CDL manual (Indiana CDL Handbook 2025) and is up to date as of December 2025. This is the most authoritative source available, and you can completely rely on the information it provides to expand your knowledge and boost your confidence. If you submit an incorrect answer, the practice test provides a thorough explanation of the correct one. This approach makes the information you seek readily available and shows how to apply it to various driving scenarios commonly seen on the official knowledge test. Traditional study methods, such as study guides, are designed to be more impersonal and one-dimensional. A study guide trains you to memorize the answers to the questions and provides no feedback on your errors. Your need for further instruction is ignored, and you are left on your own to locate the necessary information to correct your misunderstandings. You could spend a large amount of time sorting through numerous resources without becoming confident in making any conclusions. The practice test is the most effective and time-efficient way to learn about air brakes and pass the official knowledge test on your first try.
The Beach Boys might need a little help finding Kokomo on a map, but you can completely depend on the instruction for enhancing your driving skills, using the practice tests at https://driving-tests.org/indiana/.
Driver’s Ed is - nobody wants to set foot inside the BMV. 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 IN 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 BMV.
