Ohio CDL Class B Practice Exam Questions

Ohio CDL Class B Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2025|2026 Q&A | Instant Download Pdf

• What is the most important reason for doing a vehicle inspection?
• To avoid being cited by the police
• Safety for yourself and others on the road
• To save time on the route
• To make your vehicle look good

Rationale: Regular inspections ensure the vehicle is safe to operate and

prevent accidents due to mechanical failures.

• What should you do if you find a defect during your pre-trip inspection?
• Drive to the nearest shop before reporting it
• Report it to your supervisor immediately
• Ignore it if it’s minor
• Wait until the end of the day to report it 1 / 3

Rationale: Any defect must be reported before driving to ensure the vehicle

is roadworthy.

3. When starting from a parked position, you should:

• Accelerate quickly to join traffic
• Check your mirrors and signal before pulling out
• Honk before moving
• Look only to the front

Rationale: Checking mirrors and signaling helps ensure safe merging into

traffic.

4. When backing up, you should:

• Back quickly to reduce time spent
• Use a helper whenever possible
• Rely on your mirrors only
• Back without stopping

Rationale: A helper provides an extra set of eyes to prevent collisions.

• What is the minimum tread depth for front tires on a bus or truck?
• 4/32 of an inch
• 2/32 of an inch
• 6/32 of an inch
• 1/32 of an inch

Rationale: Federal law requires 4/32-inch tread depth on steering axle tires

for safety. 2 / 3

• What should you do if you become sleepy while driving?
• Drive faster to reach your destination sooner
• Drink coffee and keep going
• Stop driving and get some rest
• Open the window

Rationale: The only safe way to counter drowsiness is to stop and rest.

7. When driving in hot weather, you should frequently check:

• Headlights
• Mirrors
• Tires
• Suspension

Rationale: Heat increases tire pressure and the risk of blowouts.

• Which of these statements about downshifting is true?
• Downshift before entering a curve
• Downshift while in the curve
• Never downshift in hilly areas
• Downshift only at high speeds

Rationale: Downshifting before curves helps control speed safely.

• What should you check when inspecting your brakes?
• Tire tread
• Brake lining thickness and leaks
• Headlight brightness
• Exhaust color
• / 3