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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.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
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 December 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/.
Driver’s Ed is - nobody wants to set foot inside the OMV. 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 LA 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 OMV.
