Ohio CDL Practice Test — General Knowledge, Air Brakes & Endorsements (2026)
Ohio requires a Commercial Driver's License (CDL) for operators of certain commercial vehicles. The CDL written test is more extensive than non-commercial tests and covers federal and state commercial vehicle regulations. CDL applicants must be at least 18 years old (21 for some commercial categories) and meet medical certification requirements. Additional endorsements are available for hazardous materials, tanker vehicles, passenger transport, and school bus operation. All CDL testing and transactions must be completed at a CDL office, separate from standard BMV locations.
Sample Ohio CDL Practice Test Questions & Official Manual Citations (2026)
Below are 4 real sample questions from our Ohio cdl practice test bank. Every question in PassMyDMV cites the exact page and rule in the official Ohio manual so you understand the law behind every answer:
Sample Question 1 · Bac Limits
Official Ohio Manual · Chapter 1 · Page 8
What is the maximum blood alcohol concentration (BAC) allowed for operating a commercial motor vehicle?
- A. Any detectable amount is illegal
- B. 0.08% or more is illegal
- C. 0.04% or more is illegal Correct
- D. 0.10% or more is illegal
Why C. 0.04% or more is illegal is correct: Federal CDL law strictly prohibits operating a CMV with a BAC of 0.04% or higher. This is half the legal limit for non-commercial drivers. Operating a CMV with this level of impairment is an automatic one-year disqualification from CDL privileges. [Manual: Front Matter and Introduction — Alcohol, Leaving the Scene of an Accident, and Commission of a Felony, p. 8]
Manual excerpt (Official Ohio Manual · Chapter 1 · Page 8): “It is illegal to operate a CMV if your blood alcohol concentration (BAC) is .04% or more.”
Sample Question 2 · Excepted Interstate Commerce
Official Ohio Manual · Chapter 1 · Page 7
Which of the following activities qualifies as excepted interstate commerce?
- A. Hauling hazardous materials across state lines
- B. Transporting manufactured goods between distribution centers
- C. Transporting school children and school staff between home and school Correct
- D. Operating as a private for-profit carrier
Why C. Transporting school children and school staff between home and school is correct: Excepted interstate commerce includes specific activities where federal medical certification is not required, including transporting school children and staff to/from school. Drivers engaging solely in these excepted activities do not need a DOT medical certificate. Hauling hazardous materials and commercial transportation, however, always require full CDL qualifications. [Manual: Front Matter and Introduction — Interstate or Intrastate Commerce, p. 7]
Manual excerpt (Official Ohio Manual · Chapter 1 · Page 7): “To transport school children and/or school staff between home and school”
Sample Question 3 · Eldt Requirements
Official Ohio Manual · Chapter 1 · Page 5
What is the primary purpose of the Entry Level Driver Training (ELDT) requirement?
- A. To eliminate the need for the road test
- B. To waive the vehicle inspection test
- C. To establish minimum training requirements for certain CDL license upgrades and endorsements Correct
- D. To replace all classroom driver education
Why C. To establish minimum training requirements for certain CDL license upgrades and endorsements is correct: Entry Level Driver Training (ELDT) requirements went into effect February 7, 2022 and set new mandatory training standards before adding School Bus, Passenger, Hazmat endorsements, or upgrading to Class A or B CDL. It supplements but does not replace the knowledge and skills testing required by the state. ELDT ensures drivers have baseline competency through certified training programs. [Manual: Front Matter and Introduction — Entry Level Driver Training, p. 5]
Manual excerpt (Official Ohio Manual · Chapter 1 · Page 5): “Entry Level Driver Training (ELDT) as described in FR 49 383 will set new training requirements to be met before adding a School Bus, Passenger, Hazmat, or upgrading a CDL license to a Class A or B for entry level drivers.”
Sample Question 4 · Class A Requirements
Official Ohio Manual · Chapter 1 · Page 1
Which Class of CDL is required for a combination vehicle with a GCWR of 35,000 pounds if the towed unit's GVWR exceeds 10,000 pounds?
- A. No CDL required
- B. Class A Correct
- C. Class B
- D. Class C
Why B. Class A is correct: Class A CDL is required for any combination vehicle with a GCWR of 26,001 pounds or more provided that the towed unit's GVWR exceeds 10,000 pounds. At 35,000 pounds GCWR with towed unit over 10,000 pounds, this clearly requires a Class A license. Class A drivers have the most authority and may also drive Class B and C vehicles. [Manual: Front Matter and Introduction — CDL Classifications, p. 1]
Manual excerpt (Official Ohio Manual · Chapter 1 · Page 1): “Class A Combination Vehicles. Any combination of vehicles with gross combination weight rating (GCWR) of 26,001 or more pounds falls in Group A provided the GVWR of the vehicle(s) being towed is in excess of 10,000 pounds.”
Most-Tested Ohio CDL Practice Test Topics in Our 593-Question Bank
Our Ohio cdl practice test bank contains 593 active multiple-choice questions written directly from the official Ohio handbook. Here is how those questions break down across the core exam topics:
Frequently Asked Questions: Ohio CDL Practice Test
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