CDL Practice Test


This site is available to take practice questions to prepare for the Florida CDL test. The questions on these practice tests come from the Florida CDL Handbook. The tests are free and you are able to take them as many times as you would like. Use these practice tests as a way to prepare to obtain a CDL in Florida. You will be presented with 40 questions and you must answer 34 questions correctly to pass.  There is a 50-minute time limit.  You may not go back once you answer a question. Click the "Start Test" button below to begin. Good luck!

1 / 40

Alcohol evaporators in some air brake systems help to:

2 / 40

What are the three types of emergency equipment that you must have with your vehicle?

3 / 40

Buses may NOT have recapped or regrooved tires:

4 / 40

Do empty trucks have the best braking?

5 / 40

Charter drivers should not:

6 / 40

Why should you use chocks when parking a trailer without spring brakes?

7 / 40

Select the true statement about convex ("spot") mirrors.

8 / 40

The best way to test the low air pressure warning signal is to:

9 / 40

A baffled tanker has:

10 / 40

How many different hazard classes are there?

11 / 40

When there is a hazardous materials emergency. You should:

12 / 40

Which trailer should be the first one after the tractor?

13 / 40

If there is rust around the nuts, what may it indicate?

14 / 40

Which seats not securely fastened to the bus are usually allowed?

15 / 40

When driving normally, some drivers use the hand valve before applying the brake pedal to prevent jack knifing. Select the most appropriate response to this statement.

16 / 40

Which of the following is a clue another driver is impaired:

17 / 40

An oncoming vehicle keeps its high beams on. You should deal with this hazard by:

18 / 40

Should the air pressure in the service air tanks fall below____the driver must be alerted via warning mechanism in the truck cab.

19 / 40

Select the first action to do when the low air pressure warning comes on:

20 / 40

You should brake on a long steep downgrade hill as a supplement to the braking effects of the engine

21 / 40

When checking the wheelchair lift, the things you should look for are:

22 / 40

What might happen if a trailer is too high when you try to couple?

23 / 40

When driving on a clear night with the vehicle lights on, your speed should be such that you can stop within _____.

24 / 40

How often should you check the tires if your placarded trailer has dual tires?

25 / 40

In what position should the converter dolly air tank drain valve be in for double trailer combination?

26 / 40

_____ create a little above 90 degree angle between the adjuster arm and push rod when the brakes are released and no less than 90 degrees when the brakes are applied.

27 / 40

This gauge has a governor cut-off.

28 / 40

Which trailer is most likely to tip over due to the crack the whip effect?

29 / 40

How often should you check the cargo you are transporting?

30 / 40

Select the true statement in regards to the liquid inside of a bulk tank causing a tank truck to roll sideways.

31 / 40

Select the factors that can cause your brakes to fade or fail:

32 / 40

Select the true statement about dual air brake systems:

33 / 40

Select the reason as to why air tanks need to be drained:

34 / 40

Air pressure loss in a vehicle with a fully charged air system should be less than_______after the initial drop and brake applied.

35 / 40

You should_____to make an emergency stop with air brakes when using the stab braking method.

36 / 40

Select the statement that is true in regards to quick steering movements and triple/double trailers:

37 / 40

When arriving at the destination announce:

38 / 40

Do you need to stop before a railroad crossing if you are hauling 100 pounds of Division 4.3 materials?

39 / 40

When should you avoid using the parking brake?

40 / 40

Before backing under the trailer after connecting the air lines you should:

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CDL Category Practice Tests

CDL Practice Test

How To Get A florida Commercial Drivers License

Applicants can get their CDL at the age of 18. Person between the ages of 18 and 21 are restricted to intrastate driving, cannot drive doubles or triples, and may not be endorsed for Hazmat transport. Those age 21 and older may receive all available endorsements and drive interstate. CDL applicants must obtain a DOT medical card to be eligible for their commercial driver’s license.

Any drivers that fall into the below categories are disqualified from obtaining their CDL.

  • Having a license from any other state than Florida.
  • Being convicted of driving impaired in a commercial vehicle in the past two years.
  • Having a suspended, revoked, or canceled driver’s license.
  • Being disqualified from CDL driving privileges in another state.

All applicants must complete one or more knowledge tests and a skills test in order to be eligible to receive their commercial driver’s license.

H – Hazmat
N – Tank Vehicles
P – Passengers
S – School Bus
T – Double / Triple Trailers
X – Placarded Hazmat & Tank Vehicles

Hit the Open Road

florida CDL License Test Tips

Each applicant is required to complete a knowledge test in order to receive their CDL, with a score of 80% or better. Depending on the Class and Endorsements sought, there are multiple knowledge tests that much be taken. These include:

  • Class A – 70 Questions (50 General Knowledge + 20 Combined Vehicle)
  • Class B,C – 50 General Knowledge Questions
  • Passenger, Doubles/Triples, and Tank Endorsements – 20 Questions
  • School Bus Endorsement, Air Brake Restriction Removal – 25 Questions
  • Hazmat Certification – 30 Questions

All applicants must complete a three section skills test. This includes a vehicle inspection, on-road driving assessment, and basic controls test. Those seeking endorsements for School Bus and Passengers as well as the Air Brake Restriction Removal will need to complete the skills test in the respective vehicle for their endorsement or removal. For example, those seeking the School Bus Endorsement must complete the skills test in a school bus.

Additional Information

Information on the Florida Department of Highway Safety & Motor Vehicles

The Florida Highway Safety and Motor Vehicles provides oversight and administration for the CDL requirements and testing in Florida. To get more information contact them via:

Website: https://www.flhsmv.gov/driver-licenses-id-cards/commercial-motor-vehicle-drivers/

Phone:  850.617.2606


Additional Florida CDL Helpful Links

Please use the links below to access more valuable Florida CDL testing resources and to learn more about practice driving tests for the state of Florida.