CertQuestUSA
Transportation70+AK/AL/AR +moreConstruction & Safety39+CAEnvironmental98+AL/AR/AZ +moreHealthcare & Clinical183+AL/AR/AZ +moreProfessional Licensing307+AL/AR/AZ +moreEducation & Teacher Certification17Aviation & FAA Certification9Finance & Securities Licensing19View all sectors ›

CDL General Knowledge (Ohio)

First published: September 3, 2026Last verified: September 3, 2026Reviewed by the CertQuestUSA team
TL;DR

CDL General Knowledge (Ohio): a 124-question practice bank for the real CDL Permit & Endorsement Exams standard, 2 full papers of 50 questions each with no repeats, every question citing the real regulation it comes from.

Where these questions come from

Every question in this bank cites a real source -- primarily FMCSA CDL Manual (77%) and 49 CFR (23%) of this exam's citations.

Not sure where you stand? Take the free diagnostic — 10 real questions across the exam's domains, no sign-up required, with a domain-by-domain breakdown at the end.
Start diagnostic
2
full papers, no repeats
50
questions per paper
124
questions in the bank
What this exam covers
Real Ohio CDL requirements

The knowledge tested here is federal (FMCSA) and identical nationwide -- what varies by state is who administers it and under what terms. Researched directly from Ohio Bureau of Motor Vehicles (BMV)'s own site, verified 2026-09-03.

Administering agency
Ohio Bureau of Motor Vehicles (BMV)
CDL license fee
Aggregator estimate of ~$72 for a 4-year CDL circulated widely but NOT confirmed on an official bmv.ohio.gov fee table in this pass -- treat as unverified
Minimum CLP hold before road test
14 days (federal minimum; not independently re-confirmed on an official Ohio BMV page in this pass)
Spanish-language knowledge test
Unconfirmed

CONFLICTING, UNRESOLVED: secondary sources disagree. Some describe the Ohio CDL knowledge test as English-only per federal requirement, with only the CDL manual (not the test) available in Spanish/French/Russian/Somali. Other secondary sources claim the Class B written test is offered in Spanish, Arabic, Chinese, French, Russian etc., with an interpreter permitted at the testing location if needed. No official bmv.ohio.gov page confirming either version was successfully retrieved in this research pass. Given the active federal ELP crackdown and the confirmed Ohio provision that allows a bring-your-own interpreter for the WRITTEN test (distinct from the skills test, which is always English-only), this field should be marked UNCONFIRMED and verified directly with Ohio BMV or the OSHP CDL handbook before publishing either way -- publishing the wrong answer here carries real risk.

5 real sample questions
Under the 30-minute break requirement in 49 CFR 395.3, a driver must take a break after accumulating how many cumulative hours of driving time?
A. 4 hours
B. 6 hours
C. 8 hours
D. 10 hours
Source: 49 CFR 395.3
What is the most important reason for performing a pre-trip inspection before every trip?
A. To satisfy your dispatcher that the truck left on time
B. To find problems that could cause a crash or breakdown before they happen on the road
C. To reduce the number of miles logged for the day
D. To avoid having to fill out any paperwork later
Source: FMCSA CDL Manual §2.1.1
A roadside inspector determines that a commercial motor vehicle has a safety defect serious enough to be an immediate hazard. What is the inspector authorized to do under 49 CFR 396.9?
A. Issue a warning only, since only the motor carrier can pull a vehicle from service
B. Declare the vehicle "out of service" until the defect is corrected
C. Impound the vehicle permanently
D. Fine the driver but allow the vehicle to continue to the next scheduled stop
Source: 49 CFR 396.9
Under the federal tire tread depth standard, what is the minimum tread depth allowed in any major tread groove on a steering axle tire?
A. 1/32 inch
B. 2/32 inch
C. 4/32 inch
D. 6/32 inch
Source: 49 CFR 393.75
What is the minimum tread depth required on non-steering axle tires of a commercial motor vehicle?
A. 1/32 inch
B. 2/32 inch
C. 3/32 inch
D. 4/32 inch
Source: 49 CFR 393.75
Same exam, other states
AKALARAZCACOCTDCDEFLGAHIIAIDILINKSKYLAMAMDMEMIMNMOMSMTNCNDNENHNJNMNVNYOKORPARISCSDTNTXUTVAVTWAWIWVWY

Frequently asked questions

How many questions are on the CertQuestUSA CDL General Knowledge (Ohio) practice test?
124 questions total, split into 2 full papers of 50 each with no repeats across papers.
What topics does the CDL General Knowledge (Ohio) test cover?
13 domains, with the heaviest weight on Vehicle Inspection (14%), Basic Control & Shifting (10%), and Emergency Maneuvers & Skid Control (10%).
Where do CertQuestUSA's CDL General Knowledge (Ohio) questions come from?
Primarily FMCSA CDL Manual (77%) and 49 CFR (23%) of this bank's citations -- computed directly from this exam's own question sources, not a generic description.
Is there a free diagnostic for CDL General Knowledge (Ohio)?
Yes -- 10 real questions across the exam's domains, no sign-up required, with a domain-by-domain breakdown at the end.
Still need a CDL school, a DOT physical, or tuition help?
CDL Schools USA, our sister site, lists FMCSA-registered schools by state, paid training programs, DOT physical clinics, and WIOA and GI Bill funding.
Find a CDL school
Composing your paper...