Ohio CDL practice tests

Ohio runs commercial driver licensing through the Bureau of Motor Vehicles, itself a branch of the Department of Public Safety rather than a stand-alone agency. The BMV oversees the paperwork and the written testing; the road test is booked separately, but both trace back to the same department.

What Ohio requires

Every figure below names the document it came from, so you can check it rather than take our word for it.

Passing score
80% 49 CFR Part 383, Commercial Driver's License Standards, 383.135
Minimum age (in-state driving)
18 years old 49 CFR Part 383, Commercial Driver's License Standards, 383.71
Minimum age (across state lines)
21 years old 49 CFR Part 391, Qualifications of Drivers, 391.11
Permit holding period
14 days 49 CFR Part 383, Commercial Driver's License Standards, 383.25

Fees change without notice, so we do not repeat them here. Check Ohio Bureau of Motor Vehicles for the current cost.

Ohio practice tests

The knowledge tests are set by federal rule, so the questions are the same wherever you sit them. What changes is the paperwork above.

A dense state means a dense network of offices

Ohio is not a state where you need to plan around a long drive to sit a test. With 88 counties and a network of deputy registrar license agencies spread across nearly all of them, most drivers are within a short trip of somewhere that handles CDL paperwork, even outside the larger cities. That is a real difference from states where testing is concentrated in one or two population centers. Ohio also sits on some of the busiest freight corridors in the country — I-70, I-75 and I-80 all run through it — so the state has steady, ongoing demand for licensed commercial drivers moving goods through and across it.

What does not change from state to state

The material itself does not change from state to state. The knowledge exams, the pass mark and the age limits are set out in 49 CFR Part 383 and read the same everywhere. Each section needs 80 percent correct to pass — a federal minimum, not an Ohio-specific bar. You can drive commercially inside Ohio from 18; work that crosses into Michigan, Indiana, Kentucky, West Virginia or Pennsylvania needs you to be 21.

Matching the exams to the vehicle

General knowledge applies to every applicant, no matter the vehicle. Past that point the requirements branch out. Fail the air brakes exam and you still get a license, just with a restriction barring you from driving anything equipped with them — a real limitation if the fleet you are aiming for runs air brakes as standard. Trailers over ten thousand pounds pull in the combination vehicles exam too. Endorsements come last, and only the ones relevant to you: tank, doubles and triples, hazardous materials, passenger, school bus.

Hazardous materials is worth planning around separately, because it adds a Transportation Security Administration background check on top of the written exam, and that check runs on federal timelines you cannot speed up by studying harder.

Before you book

A commercial learner permit comes before everything else — no skills test can be booked without one, and federal rule keeps it in place for at least 14 days first. Treat that fortnight as exam time. Getting the knowledge tests done early means a failed attempt is a minor setback rather than something that eats into the time left before the skills test.

This site does not publish fees, on purpose. Ohio revisits them from time to time, and an outdated number would do you more harm than no number at all — better to check the current cost with the BMV than trust a figure printed here months ago. Our job is narrower: telling you which questions the exams actually cover, and citing the exact source behind each one.

Jump to a test

Every question on every one of these is free, and each answer names the handbook page it came from.

Other states

Cited to the page, every time.

Every question names the handbook, section and page it was read from, so you can check the answer instead of taking our word for it.

How we write these