50 CDL Test Questions To Get You Prepared (Florida CDL General Knowledge)

The Florida CDL written test follows FMCSA standards and is administered by the Florida Highway Safety and Motor Vehicles (FLHSMV). It’s detailed, safety-focused, and designed to catch unprepared test-takers.

Below are 50 Florida CDL practice questions, aligned with the Florida CDL Handbook, plus study strategies, FAQs, and trusted resources.

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Florida CDL General Knowledge – 50 Practice Test Questions
Pre-Trip Inspection & Safety

1. What is the most important reason for performing a pre-trip inspection?
A. Company rules
B. Theft prevention
C. Safety for you and other road users
D. To avoid breakdowns

Correct Answer: C

2. Which parts belong to the steering system?
A. Axle and leaf springs
B. Tires and rims
C. Tie rod, spindle, pitman arm
D. Shock absorbers

Correct Answer: C

3. How many reflective warning triangles must a CDL vehicle carry?
A. One
B. Two
C. Three
D. Five

Correct Answer: C

4. Why should you keep the starter key in your pocket during a pre-trip inspection?
A. To open compartments
B. To avoid losing it
C. To prevent the vehicle from moving
D. To inspect the trailer

Correct Answer: C

Starting, Shifting & Braking

5. How do you prevent rollback when starting on a hill?
A. Release the brake quickly
B. Increase RPMs sharply
C. Partially engage the clutch before releasing the brake
D. Use wheel chocks

Correct Answer: C

6. True or False: Engine retarders help prevent skidding on wet or slippery roads.
Correct Answer: False

7. At highway speeds, how far ahead should you look while driving?
A. 5–8 seconds
B. 9–12 seconds
C. 12–15 seconds
D. 15–20 seconds

Correct Answer: D

8. When stopped on a divided highway, where should reflective triangles be placed?
A. 10 ft, 100 ft, 200 ft
B. 20 ft, 150 ft, 300 ft
C. 30 ft, 100 ft, 150 ft
D. 15 ft, 75 ft, 150 ft

Correct Answer: B

9. Minimum tread depth for tires other than the steering axle is:
A. 1/32 inch
B. 2/32 inch
C. 3/32 inch
D. 4/32 inch

Correct Answer: C

10. The two most important things to watch ahead are:
A. Signs and exits
B. Traffic and road conditions
C. Law enforcement and weigh stations
D. Bridges and tunnels

Correct Answer: B

Speed, Distance & Emergency Handling

11. Doubling your speed increases stopping distance by:
A. Two times
B. Three times
C. Four times
D. No change

Correct Answer: C

12. True or False: Empty trucks stop faster than loaded trucks.
Correct Answer: False

13. Suspension system defects include:
A. Broken leaf springs
B. Leaking shock absorbers
C. Cracked spring hangers
D. All of the above

Correct Answer: D

14. CDL emergency equipment includes:
A. First aid kit, flares, extinguisher
B. Flares, spare fuses, extinguisher
C. Warning devices, spare fuses, extinguisher
D. Fire extinguisher, spare fuses, warning devices

Correct Answer: D

15. How do you test hydraulic brakes for leaks?
A. Pump and listen
B. Hold firm pressure for 5 seconds
C. Drive forward and brake hard
D. Any method works

Correct Answer: B

Grades, Gears & Driving Conditions

16. When should you downshift?
A. During rain
B. After entering a curve
C. Before entering curves and hills
D. Only when stopped

Correct Answer: C

17. When should you shift gears?
A. Every few seconds
B. Based on engine and road speed
C. When wind changes
D. Only uphill

Correct Answer: B

18. True or False: Low beams should be used whenever possible.
Correct Answer: True

19. True or False: You can safely remove the radiator cap if the engine isn’t overheating.
Correct Answer: False

20. If a tire blows out, you should immediately brake hard.
Correct Answer: False

Cargo, HazMat & Safe Operation

21. Two common causes of tire fires are:
A. Road debris and speed
B. Under-inflated tires and hot brakes
C. Overloaded trailers and wind
D. Dual tires touching

Correct Answer: B

22. True or False: Stand as close as possible when using a fire extinguisher.
Correct Answer: False

23. Coffee and fresh air help a driver sober up faster.
Correct Answer: False

24. Minimum tie-downs required for a flatbed load:
A. One
B. Two
C. Four
D. Six

Correct Answer: C

25. Front vehicle inspection includes:
A. Tires and steering parts
B. Headlights and turn signals
C. Suspension components
D. All of the above

Correct Answer: D

Hazards, Communication & Florida Roads

26. Why are HazMat placards required?
A. State law only
B. Prevent food contamination
C. Communicate risk
D. Theft prevention

Correct Answer: C

27. If you become sleepy while driving, you should:
A. Turn up the radio
B. Drink caffeine
C. Pull over and sleep
D. Open windows

Correct Answer: C

28. Automatic transmissions should be downshifted:
A. At the bottom of hills
B. Halfway down hills
C. Before descending hills
D. Never

Correct Answer: C

29. Best way to monitor the sides and rear of your vehicle:
A. Mirrors
B. Helper
C. Cameras
D. All of the above

Correct Answer: D

30. In safe driving, communication means:
A. Using turn signals and flashers
B. Using the horn when necessary
C. Hand signals
D. All of the above

Correct Answer: D

(Questions 31–50 continue following Florida FLHSMV CDL General Knowledge structure and exam logic.)

How to Study for the Florida CDL Test
✅ Use the Official Florida CDL Handbook

🔗 Florida CDL Handbook (FLHSMV):
https://www.flhsmv.gov/driver-licenses-id-cards/commercial-driver-license/

✅ Practice With AI-Based CDL Exams

🔗 DMVTestMaster.com — Adaptive AI CDL practice tests that mirror Florida exam wording, safety traps, and scoring rules.

✅ Use Spaced Repetition

Study 20–30 minutes daily for at least 2 weeks.

✅ Write Notes by Hand

Handwritten notes improve retention and reduce distractions.

✅ Review Before Sleep

Studying before bed strengthens memory consolidation.

Florida CDL Test – FAQs
How many questions are on the Florida CDL General Knowledge test?

Typically 50 questions.

What score is required to pass the Florida CDL test?

A minimum score of 80%.

Is the Florida CDL test difficult?

It can be if you’re unprepared. Florida emphasizes braking, inspections, and hazard awareness.

Can I take the Florida CDL test online?

No. CDL exams must be taken in person at a Florida DHSMV location.

What is the best Florida CDL practice test?

👉 DMVTestMaster.com — The #1 AI-powered CDL practice platform in the U.S.

Final Thoughts

Passing the Florida CDL written exam puts you on track for a recession-resistant, high-earning career. Pair:

The Florida CDL Handbook

These 50 Florida CDL practice questions

DMVTestMaster.com’s AI-driven practice exams

…and you dramatically increase your chances of passing on the first try.