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LA CDL Air Brakes Practice Test 3 2025

Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements.

You may understand Cajun English perfectly but find the function and operation of air brakes head-scratching. However, our Air Brakes practice test series can help eliminate your confusion and add to the skills you developed through Entry-Level Driver’s Training (ELDT). Since most commercial vehicles are equipped with air brakes, it is best not to have an air brakes restriction on your Louisiana commercial driver’s license (CDL). This third free Air Brakes practice test is expertly designed to teach you the skills that allow you to remove this restriction. More driving opportunities and higher earnings are some of the advantages of removing the air brakes restriction, and the practice test can prepare you to access them.

There are multiple on-line resources available, but our CDL Air Brakes practice test sets itself apart from them with its interactive capability. The practice test is able to identify and help you overcome your specific learning obstacles. You must pass an official Air Brakes knowledge test and inspect and operate an air brake-equipped vehicle to remove the air brakes restriction from your CDL. The practice test requires you to answer at least 80% of the 25 questions on the official knowledge test to pass. Using 30 questions resembling those on the official knowledge test, the practice test reveals the information you struggle to understand. You’ll be able to concentrate your study time on these topics and track your progress in understanding as you retake the practice test.

While you may successfully develop a degree of surface knowledge using traditional study methods, this CDL Air Brakes practice test helps you gain a deeper understanding. Traditional study methods, such as study guides, train you to memorize the answers to the questions. The practice test is based on the most recent Louisiana OMV CDL manual (Louisiana CDL Handbook 2025) and is up to date as of November 2025. This resource is ideal for rapidly expanding your driving skills because it contains authoritative information. Any wrong answer you submit is followed by a full explanation of the correct answer, using information taken directly from the CDL manual. This explanation is accurate and elevates your confidence in applying the information to your driving practices. You won’t find yourself stuck on understanding complex information without receiving clear direction to correct your misunderstandings. The practice test allows you to make efficient use of your study time by not forcing you to search for the required information. Our third free Louisiana Air Brakes practice test is unmatched in providing you with a game plan for your success. You’ll be fully prepared to exhibit your knowledge of air brakes and pass the official knowledge test on your first attempt/

If you want to get some lagniappe for your driving career, you should explore the many options for developing professional driving skills by using the practice tests at https://driving-tests.org/louisiana/la-cdl-practice-test/.

Real exam-style pitfalls you’ll practice:
Common Traps
Distractors
Trick Wording
Double Negatives
LA CDL Air Brakes Practice Test 3 2025
Commercial Driver's License
Based on official LA exam questions
Steven Litvintchouk, M.S., Chief Educational Researcher at Driving-Tests.org

Authored and fact-checked by Steven Litvintchouk, M.S.

Chief Educational Researcher, Driving‑Tests.org (ACES member)
Verified for accuracy November 2025
Methodology & Editorial Policy

8 min to complete
Available in EN and ES

What to expect on the actual LA permit test

25

questions

20

correct answers to pass

80%

passing score

More LA CDL test resources

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