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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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Increasing your driving opportunities could simply involve removing the “L” air brake restriction from your Nevada Commercial Driver’s License (CDL). The “L” restriction prohibits you from operating most semi-trucks and full-size buses because they are equipped with air brakes. If you hope to drive for a commercial trucking company, such as Truline, or transport tourists on the Deuce, the air brake restriction will disqualify you. Air brakes are an important safety feature providing the ability to adjust your speed in response to changing road conditions. While transporting heavily weighted loads, you need more braking force to slow down for sharp turns and come to a complete stop in heavy traffic, and an extensive knowledge of air brake operations is essential.
Chief Educational Researcher, Driving‑Tests.org (ACES member)
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Our Nevada DMV CDL air brake “endorsement” practice test is designed to give you a strategic advantage in developing a firm grasp of these systems. Removing the air brake restriction requires you 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. You must answer at least 80% of the 25 questions on the official knowledge test to receive a passing score.
This Nevada DMV CDL air brake “endorsement” practice test provides the preparation necessary to meet the challenges of the official knowledge test. It uses 30 questions, like those on the official knowledge test, to establish a baseline for expanding your knowledge and identifying the information you must study more. From this starting point, you can devise a plan to effectively overcome your learning obstacles.
The practice test is based on the most recent Nevada DMV CDL manual (Nevada CDL Handbook 2025) and is up to date as of December 2025. If you submit an incorrect answer, the practice test immediately provides you with a detailed explanation of the correct one with information from the CDL manual. This approach allows you to eliminate your learning barriers with the most authoritative information and see how to apply it to various driving scenarios on the official knowledge test.
Before the practice test, traditional study methods that focused on training you to memorize the answers to the questions without additional feedback were commonly used. Fortunately, the practice test has made such study techniques obsolete by providing immediate access to the information you need to fill your knowledge gaps and fully develop your understanding of air brake systems. The practice test is the most effective and time-efficient resource to learn about air brakes and pass the official knowledge test on your first attempt.
The Golden Knights bring excitement to the ice in the desert, and you can acquire sensational driving skills using the practice tests at https://driving-tests.org/nevada/.
Driver’s Ed is - nobody wants to set foot inside the DMV. 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 NV 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 DMV.
