All your missed questions are saved
automatically for extra practice.
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.
View All PlansAdding difficult questions to Challenge Bank™ is an exclusive Premium feature. Unlock access to 650+ exam-like questions, a Pass Guarantee, personalized study plans, and more.
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It took some key trades and acquisitions for the St. Louis Rams to assemble “The Greatest Show on Turf.” The most significant obstacle to learning about air brakes is finding a reliable source to teach you. Our practice test series is unmatched in helping you overcome your specific learning barriers. It is the most time-efficient study method for learning the skills to remove the air brakes restriction from your Missouri commercial driver’s license (CDL). This third free CDL Air Brakes practice test helps you to meet your learning objectives by eliminating your misunderstandings with credible information. You can use this information to expand your driving opportunities and earnings potential.
Sufficiently preparing you to meet the requirements for removing the restriction, our CDL Air Brakes practice test makes complex information easier to understand. You must pass an official Air Brakes Knowledge test and a skills test that confirms your ability to inspect and operate the system. By correctly answering 80% of the 25 questions on the official knowledge test, you will earn the minimum passing score. The practice test contains 30 questions, like the ones on the official knowledge test, to assess your current knowledge. Based on the result, you can put together a strategic study plan that concentrates on the information you struggle to understand.
This CDL Air Brakes practice test focuses on filling in your knowledge gaps with reliable information to develop a firm grasp of air brake system operations. You will learn the essential functions of air brake systems and how to operate them. The practice test is based on the most recent Missouri DOR CDL manual (Missouri CDL Handbook 2025) and is up to date as of December 2025. If you get a question wrong, you won’t feel stuck or left to figure it out on your own. Instead, the practice test has an interactive capability that responds with a detailed explanation of the correct answer. Without using a lot of technical terminology, the practice test helps you understand and absorb this information. You can fully trust the accuracy of the information because it is taken directly from the CDL manual. With help from this Missouri CDL Air Brakes practice test, you can successfully apply its teachings to your driving practices and likely pass the official knowledge test on your first try.
Kansas City began earning its reputation as the “City of Fountains” by providing watering troughs for horses, and you can quench your thirst for professional driving skills by using the practice tests at https://driving-tests.org/missouri/mo-cdl-practice-test/.
Driver’s Ed is - nobody wants to set foot inside the DOR. 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 MO 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 DOR.
