Ohio CDL practice test

Getting a commercial driver's licence in Ohio starts with the CDL knowledge tests. The content is federal: every state, Ohio included, writes its tests from the FMCSA CDL manual, so the general knowledge test has 50 questions, the endorsement tests have 20 to 30, and the passing score is 80% on each. Ohio Bureau of Motor Vehicles administers the test; the rules behind it are published by the FMCSA. Try the free Ohio CDL practice questions below, then pick a full test.

50general knowledge questions
80%passing score on every test
8knowledge tests covered
OHpick your state once in the app

Free Ohio CDL practice quiz

Five questions from the general knowledge, air brakes and combination vehicles banks, the three tests most Ohio Class A applicants take first. Tap an answer to see if you were right and read the explanation.

0 of 5 right0 of 5 answered

The most common type of foundation brake on heavy vehicles is the:
In an S-cam brake, what forces the brake shoes against the drum?
The brake chamber at each wheel:
The supply pressure gauge tells you:
On a long downgrade you notice you must apply more and more pressure on the application pressure gauge to hold the same speed. This means:

Every CDL test for Ohio drivers

Each page has a free ten-question quiz, the real question count, the 80% pass mark and what the test covers.

How the Ohio CDL knowledge test works

You take the general knowledge test first; it is required for every CDL class. Class A drivers add the combination vehicles test. Almost everyone takes the air brakes test, because skipping it puts an air brake restriction on the licence. Endorsements (hazmat, tanker, doubles/triples, passenger, school bus) each have their own knowledge test. Pass the tests and you hold a commercial learner's permit; the skills test in a truck comes later.

Fees, appointment rules and test centre locations are set by Ohio; the current ones from Ohio BMV are in the next section. What does not change is the content, and that is what PassRig drills.

Ohio CDL fees and rules

In Ohio the CDL is issued by the Ohio Bureau of Motor Vehicles. The figures below are taken from its own pages and were last checked on 2 November 2026. Fees and rules change, so confirm with the agency before you go.

Study from the state's own book: Ohio Commercial Driver License Manual. PassRig's questions are written from the same FMCSA manual it is based on.

What	OH	Source
Learner's permit fee	$31.50 for the commercial learner's permit (temporary permit)	bmv.ohio.gov
CDL fee	First CDL $46.50 for 4 years or $92.00 for 8 years; renewal $49.25 or $97.40	bmv.ohio.gov
Knowledge test fee	No separate knowledge test fee listed; skills test parts cost $10, $10 and $30	bmv.ohio.gov
Permit valid for	12 months	bmv.ohio.gov
Minimum age	18, with a valid Ohio driver licence	publicsafety.ohio.gov
Appointment	Skills tests by appointment at a CDL testing location; a $5.00 fee applies to in-person visits at a deputy registrar	bmv.ohio.gov
If you fail	1 day after a failed knowledge test	publicsafety.ohio.gov
Test languages	No interpreter during the test; a dictionary for definitions is allowed	publicsafety.ohio.gov
Medical certificate	Non-excepted drivers give the BMV a current medical examiner's certificate and self-certify	dam.assets.ohio.gov
Entry-level driver training	Required since 7 February 2022 before school bus, passenger or hazmat, or an upgrade to Class A or B	dam.assets.ohio.gov
Also worth knowing	Hold the permit 14 days before the skills test	publicsafety.ohio.gov

4 official pages from Ohio BMV were read for this section. Nothing on it is estimated. Fee and permit figures were read from the Ohio BMV fee and CDL pages on 2 November 2026.

Ohio CDL test questions

How many questions are on the Ohio CDL test?

The Ohio CDL general knowledge test follows the federal model: 50 questions, 40 correct to pass. Endorsement tests are shorter: air brakes 25, hazmat 30, and combination vehicles, tanker, doubles/triples, passenger and school bus 20 each.

What is the passing score on the Ohio CDL permit test?

80% on every knowledge test, the same pass mark used across the United States.

Where do I take the CDL knowledge test in Ohio?

Ohio Bureau of Motor Vehicles gives the test. Skills tests by appointment at a CDL testing location; a $5.00 fee applies to in-person visits at a deputy registrar The test content itself comes from the FMCSA CDL manual.

How much does a CDL permit cost in Ohio?

Ohio BMV lists the commercial learner's permit fee as $31.50 for the commercial learner's permit (temporary permit). If you fail a knowledge test: 1 day after a failed knowledge test

Does PassRig have Ohio CDL practice questions?

Yes. Pick Ohio in the app and you get practice sets and mock exams built from the knowledge test content your state uses, with the real counts and the 80% line.