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IN CDL Air Brakes “Endorsement” Practice Test 2 2025

  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
  • Based on 2025 IN commercial driver's license manual
  • Triple-checked for accuracy
  • Updated for August 2025

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.

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 August 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/.

IN commercial driver's license
  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
  • Triple-checked for accuracy

About this test

5 out of 5 • 1 votes
7 min to complete
Available in EN and ES
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
Ensuring the accuracy and quality of our program is paramount. Learn more about our rigorous standards in our Commitment to Accuracy article.

What to expect on the actual IN BMV exam

25

questions

20

correct answers to pass

80%

passing score

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