Free Ohio CDL practice test with real commercial driving questions. Prepare for your Ohio CDL exam — General Knowledge, Air Brakes, HazMat, and all endorsements. Updated for 2026.
The Ohio BMV CDL knowledge test has 50 questions for General Knowledge, with additional 20–30 question tests for each endorsement (Air Brakes, HazMat, Tanker, etc.). You need 80% to pass each section. Ohio requires 75% (30 of 40) to pass — lower than the 80% standard in most states.
The Ohio BMV knowledge exam tests your understanding of Ohio traffic laws, road signs, and safe driving practices. DriveAce covers every topic you'll encounter on test day.
Vehicle inspection, cargo management, driving techniques, and documentation for Ohio CDL.
Air brake system components, inspection, emergency stops, and maintenance tested by the Ohio BMV.
Hazardous materials classification, placarding, loading/unloading rules for Ohio CDL endorsement.
Liquid surge, rollover prevention, loading and unloading procedures for Ohio tanker endorsement.
Coupling, uncoupling, stability, and safe driving with multiple trailers under Ohio CDL rules.
Passenger safety, school bus operations, railroad crossings, evacuation for Ohio CDL.
The Ohio BMV CDL General Knowledge test has 50 questions. You need 80% (40 correct) to pass. Each CDL endorsement — Air Brakes, HazMat, Tanker, Doubles/Triples, Passenger, School Bus — has an additional 20–30 question test, each also requiring 80%.
DriveAce covers all major Ohio CDL endorsements: General Knowledge, Air Brakes, HazMat (Hazardous Materials), Tanker Vehicles, Doubles/Triples, Passenger Vehicles, and School Bus. All practice questions are based on Ohio BMV CDL requirements.
Yes — DriveAce offers free CDL practice questions for Ohio. Study General Knowledge and endorsement-specific questions that mirror the real Ohio BMV CDL exam. Full access to all practice questions is available for a one-time $19.99 fee.
You need to score 80% on the Ohio CDL General Knowledge test and each endorsement test. DriveAce practice tests use the same 80% passing threshold, so you always know when you're ready for the real exam at the Ohio BMV.
Join thousands of drivers who passed their Ohio CDL exam on the first try with DriveAce. No subscription. No ads. Just the knowledge you need.
Start Free Practice Test →$19.99 one-time for full access. 20 free questions included.