Florida Commercial Driver License (CDL)
Class B Practice Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2025|2026 Q&A | Instant
Download Pdf
1. What is the first thing you should do before starting a pre-trip
inspection?
Check the vehicle for any obvious problems.
This ensures safety and identifies potential hazards before operating
the vehicle.
2. How often should you perform a pre-trip inspection?
Before every trip.
Regular inspections prevent accidents and mechanical failures.
3. What should you check on the engine compartment during a pre-trip
inspection?
, Leaks, fluid levels, belts, and hoses.
Identifying leaks or worn components prevents breakdowns and
accidents.
4. Why is it important to check the brake system during pre-trip
inspection?
To ensure brakes function properly and the vehicle can stop safely.
Brake failure is a leading cause of accidents in commercial vehicles.
5. What should you inspect on the steering system?
Check for looseness, wear, and proper fluid levels.
Faulty steering can cause loss of control of the vehicle.
6. How do you test your service brakes before driving?
Apply brakes while moving slowly to ensure they stop the vehicle
correctly.
Confirms brakes respond as expected, preventing accidents.
7. What should you check on the tires during a pre-trip inspection?
Tire pressure, tread depth, and damage.
Properly maintained tires reduce blowouts and improve vehicle
control.
8. How should you check the suspension system?
Look for broken or missing parts, and check for signs of wear.
A damaged suspension affects vehicle handling and safety.
,9. What is the proper way to check the lights on a vehicle?
Turn on all lights and walk around to ensure they function.
Proper lighting is essential for visibility and communication with
other drivers.
10. How do you check the mirrors and windows?
Ensure they are clean, properly adjusted, and free of damage.
Good visibility reduces blind spots and increases safety.
11. Why is it important to check the exhaust system?
To prevent leaks that could allow harmful fumes into the cab.
Exhaust leaks can be dangerous and affect engine performance.
12. What should you do if you find a problem during a pre-trip
inspection?
Report it and do not drive until it is fixed.
Driving a vehicle with mechanical issues is unsafe and illegal.
13. How should you enter a commercial vehicle safely?
Use three points of contact.
Prevents slips and falls while climbing into the cab.
14. What is the first step when starting a vehicle?
Adjust seat, mirrors, and fasten seatbelt.
Proper positioning ensures safe operation of controls.
, 15. How should you test the parking brake?
Set the brake and gently try to move the vehicle.
Ensures the parking brake holds the vehicle on a slope.
16. What is the correct hand position on the steering wheel?
9 and 3 o’clock positions.
Provides better control and reduces injury risk from airbag
deployment.
17. How should you use the accelerator on slippery roads?
Apply slowly and gradually.
Sudden acceleration can cause skidding or loss of control.
18. When approaching a curve, what should you do?
Slow down before entering the curve.
Braking in a curve can cause skidding or rollover.
19. How should you handle a skid?
Turn in the direction of the skid and ease off the accelerator.
Correcting skids prevents loss of control.
20. What is the proper following distance behind another vehicle?
At least 4 seconds in good conditions.
Maintains safe stopping distance and reaction time.
21. Why should you check your mirrors frequently while driving?
To monitor traffic and maintain situational awareness.
Reduces blind spots and improves safety when changing lanes.
Class B Practice Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2025|2026 Q&A | Instant
Download Pdf
1. What is the first thing you should do before starting a pre-trip
inspection?
Check the vehicle for any obvious problems.
This ensures safety and identifies potential hazards before operating
the vehicle.
2. How often should you perform a pre-trip inspection?
Before every trip.
Regular inspections prevent accidents and mechanical failures.
3. What should you check on the engine compartment during a pre-trip
inspection?
, Leaks, fluid levels, belts, and hoses.
Identifying leaks or worn components prevents breakdowns and
accidents.
4. Why is it important to check the brake system during pre-trip
inspection?
To ensure brakes function properly and the vehicle can stop safely.
Brake failure is a leading cause of accidents in commercial vehicles.
5. What should you inspect on the steering system?
Check for looseness, wear, and proper fluid levels.
Faulty steering can cause loss of control of the vehicle.
6. How do you test your service brakes before driving?
Apply brakes while moving slowly to ensure they stop the vehicle
correctly.
Confirms brakes respond as expected, preventing accidents.
7. What should you check on the tires during a pre-trip inspection?
Tire pressure, tread depth, and damage.
Properly maintained tires reduce blowouts and improve vehicle
control.
8. How should you check the suspension system?
Look for broken or missing parts, and check for signs of wear.
A damaged suspension affects vehicle handling and safety.
,9. What is the proper way to check the lights on a vehicle?
Turn on all lights and walk around to ensure they function.
Proper lighting is essential for visibility and communication with
other drivers.
10. How do you check the mirrors and windows?
Ensure they are clean, properly adjusted, and free of damage.
Good visibility reduces blind spots and increases safety.
11. Why is it important to check the exhaust system?
To prevent leaks that could allow harmful fumes into the cab.
Exhaust leaks can be dangerous and affect engine performance.
12. What should you do if you find a problem during a pre-trip
inspection?
Report it and do not drive until it is fixed.
Driving a vehicle with mechanical issues is unsafe and illegal.
13. How should you enter a commercial vehicle safely?
Use three points of contact.
Prevents slips and falls while climbing into the cab.
14. What is the first step when starting a vehicle?
Adjust seat, mirrors, and fasten seatbelt.
Proper positioning ensures safe operation of controls.
, 15. How should you test the parking brake?
Set the brake and gently try to move the vehicle.
Ensures the parking brake holds the vehicle on a slope.
16. What is the correct hand position on the steering wheel?
9 and 3 o’clock positions.
Provides better control and reduces injury risk from airbag
deployment.
17. How should you use the accelerator on slippery roads?
Apply slowly and gradually.
Sudden acceleration can cause skidding or loss of control.
18. When approaching a curve, what should you do?
Slow down before entering the curve.
Braking in a curve can cause skidding or rollover.
19. How should you handle a skid?
Turn in the direction of the skid and ease off the accelerator.
Correcting skids prevents loss of control.
20. What is the proper following distance behind another vehicle?
At least 4 seconds in good conditions.
Maintains safe stopping distance and reaction time.
21. Why should you check your mirrors frequently while driving?
To monitor traffic and maintain situational awareness.
Reduces blind spots and improves safety when changing lanes.
