All your missed questions are saved
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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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A Commercial Driver’s License (CDL) in Missouri opens up a wide range of job opportunities across both urban and rural areas. From hauling grain to delivering construction materials, the state’s economy relies heavily on skilled commercial drivers. As a Class A CDL holder, you’ll do demanding jobs such as hauling steel coils from factories in St. Louis to fabrication yards across the Midwest. If this is your dream career, you should begin the licensing process as soon as possible.
During the early stages of your learning phase, the official Missouri Commercial Driver License Manual (Missouri CDL Handbook 2026) will be your primary study resource. It is published by the Missouri Department of Revenue (DOR) and has several chapters on the various aspects of commercial driving theory. You should read its contents multiple times, but to fully master this subject, it is highly recommended that you use other efficient tools too.
Our Missouri CDL Class A Practice Test has been designed to help you study commercial driving theory efficiently. This intuitive tool has 94 questions, and you must score 80% or higher to pass. With unlimited attempts, you can practice as often as your schedule allows. Do not let a low score discourage you. It is perfectly normal to make mistakes, and we give you the opportunity to learn from them. A detailed explanation of the correct answer is provided for each question. You should note this feedback in a notebook or notebook app for future reference. “Officer Frank,” our automated assistant, will be present during your training sessions. You can request hints that nudge you in the right direction whenever you get stuck on a difficult question. Additionally, this AI coach can provide real-life examples and further explanations.
M.S., Chief Educational Researcher (ACES member)
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Studying commercial driving theory doesn’t have to be a chore. It may take you weeks to fully master this complex subject, but having a strong understanding of pre-trip inspections and safe cargo handling is crucial. Use our Missouri CDL Class A Practice Test to improve your knowledge and ace the official written knowledge test on your first attempt.
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 2026 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.
