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You’ve come to the right place to prepare to earn your Class A Commercial Driver’s License (CDL), which permits you to legally drive combination vehicles like tractor-trailers. One of the requirements is to pass the Ohio Combination Vehicles Knowledge Test, a 20-question multiple-choice exam based on the official Ohio CDL Manual. You must score at least 80% (16 correct answers) to pass. If things don’t go your way on your first try, you must wait at least one business day and pay a retesting fee for each attempt. Our Free Ohio CDL Combination Practice Tests are designed to simplify and quicken your learning process, helping you avoid delays and added costs.
You’ll cover safe driving habits for combination vehicles, including how to prevent jackknifing and trailer skids, air brake systems for combination vehicles, coupling and uncoupling procedures, and inspection checklists. With the latest Ohio CDL Manual as the primary source, we have created not just one, but a series of practice tests that mirror the official exam. Check out another Ohio practice test here: https://driving-tests.org/ohio/oh-cdl-combination-test/. Each response you provide is met with feedback (and helpful hints as needed). This method of instant response turns mistakes into immediate learning opportunities and vastly exceeds the effectiveness of standard study guides.
M.S., Chief Educational Researcher (ACES member)
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As mentioned earlier, this test is just one of several requirements. You must also complete Entry-Level Driver Training (ELDT) through a provider approved by the Federal Motor Carrier Safety Administration (FMCSA) and listed in the Training Provider Registry (TPR). You’ll need to pass the CDL General Knowledge Exam (we have practice tests for that, too!). You’ll also need to hold your Commercial Learner’s Permit (CLP) for at least 14 days before taking the skills test in a representative combination vehicle.
It’s a process, but well worth the effort due to the opportunities that open for you across the Buckeye State. Interstates 70, 75, and 71 provide the infrastructure for Ohio’s industries like manufacturing, agriculture, and logistics. Major employers in the state include FedEx Freight, Maverick Transportation, Schneider National, and TMC Transportation, and all regularly recruit Class A CDL drivers.
Most combination vehicles in Ohio use air brakes. If you don’t pass the Air Brakes Knowledge Test, your CDL will carry an “L” or “Z” restriction, limiting the types of vehicles you can drive. Take our Ohio Air Brakes Practice Test to prepare. Also, check out one of our practice tests for Ohio endorsements you can add to your CDL for added marketability: https://driving-tests.org/ohio/oh-cdl-hazmat-practice-test/.
Driver’s Ed is - nobody wants to set foot inside the BMV. 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 OH 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 BMV.
