OH DMV Commercial Driver's License (CDL) 1 — Questions and Answers
Question 1: What minimum age must an Ohio CDL holder be to drive a commercial vehicle in interstate commerce?
- 21 years old (Correct answer)
- 18 years old
- 19 years old
- 20 years old
Correct answer: 21 years old
Federal law requires CDL holders to be at least 21 years old to operate commercial vehicles in interstate (across state lines) commerce.
Question 2: What is the BAC limit for CDL holders operating a commercial vehicle in Ohio?
- 0.04% (Correct answer)
- 0.08%
- 0.02%
- 0.06%
Correct answer: 0.04%
Ohio CDL holders are held to a stricter 0.04% BAC limit when operating a commercial motor vehicle, half the limit for regular drivers.
Question 3: Which class of Ohio CDL is required to operate a vehicle with a GVWR over 26,000 lbs?
- Class A or Class B depending on trailer weight (Correct answer)
- Class C
- Class A only
- Class B only
Correct answer: Class A or Class B depending on trailer weight
A Class B CDL covers single vehicles over 26,000 lbs GVWR, while a Class A is needed when the combination vehicle (truck + trailer) exceeds 26,000 lbs with the trailer over 10,000 lbs.
Question 4: What does a CDL 'Hazardous Materials' (H) endorsement allow an Ohio driver to transport?
- Materials requiring placarding under federal hazmat regulations (Correct answer)
- Oversized loads only
- Flammable liquids only
- Any cargo weighing over 10,000 lbs
Correct answer: Materials requiring placarding under federal hazmat regulations
The Hazmat (H) endorsement on an Ohio CDL allows the driver to transport materials that require federal hazardous materials placards on the vehicle.
Question 5: What additional check is required for Ohio CDL applicants seeking a Hazardous Materials endorsement?
- A TSA security threat assessment (fingerprint-based federal background check) (Correct answer)
- An Ohio State Police background check only
- A medical fitness examination
- A separate road test with hazmat cargo
Correct answer: A TSA security threat assessment (fingerprint-based federal background check)
Federal law requires all CDL applicants seeking a Hazardous Materials endorsement to undergo a TSA security threat assessment, which includes fingerprinting and a federal background check.
Question 6: How often must Ohio CDL holders provide a current medical examiner's certificate to the BMV?
- Every 2 years (or sooner if the certificate expires earlier) (Correct answer)
- Every year
- Every 5 years
- Only when renewing their CDL
Correct answer: Every 2 years (or sooner if the certificate expires earlier)
Federal medical certificates are typically valid for up to 2 years, and Ohio CDL holders must keep a current certificate on file with the BMV.
OH DMV Commercial Driver's License (CDL) 1
What minimum age must an Ohio CDL holder be to drive a commercial vehicle in interstate commerce?