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

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

2 / 40

How often should you drain your air tanks?

3 / 40

When inspecting the ______you are making sure that the lines and hoses are not chafed, cut, pinched, or dragged against tractor parts.

4 / 40

Hazardous materials (that are not forbidden) carried on a bus must be:

5 / 40

What action should you take if there is no phone available and you discover your hazardous materials shipment leaking at a rest stop?

6 / 40

It is good practice to_____when uncoupling.

7 / 40

Select the factor that has no effect on how much liquid you can carry:

8 / 40

A slack adjuster is:

9 / 40

Another term for a smooth bore tank is:

10 / 40

The walls that separate compartments inside the tanks and having openings at the top and bottom are called:

11 / 40

The baffles in a tank trailer help to control:

12 / 40

The most dangerous time during the school bus ride is:

13 / 40

If the hazardous materials are classified as FORBIDDEN you should:

14 / 40

What should you do if you start a trailer skid?

15 / 40

Which of the following statements about the bus interior is false?

16 / 40

Where is compressed air stored?

17 / 40

How should the pintle hook be when backing a dolly under the second trailer?

18 / 40

The trailer should be lowered so that _____.

19 / 40

Select the step that comes first:

20 / 40

How often should you check the tires on a placarded trailer that has dual tires?

21 / 40

Which of the following materials would be an acceptable floor liner for moving Division 1.1 or 1.2 materials?

22 / 40

Select the factor that is known to cause brakes to fail or fade. (more than one answer may be correct, but select only one)

23 / 40

Select how you can tell if your vehicle is equipped with an anti-lock braking system:

24 / 40

If you work for an interstate carrier:

25 / 40

A portable tank differs from a cargo tank in that ______.

26 / 40

The CDL manual indicates the last step on picking up students at the bus stop is as follows:

27 / 40

You should_____to uncouple the converter dolly.

28 / 40

Why do air brakes take longer to stop than hydraulic brakes?

29 / 40

The Emergency Response Guide, ERG, can best be explained as _____.

30 / 40

What is the purpose of a baffle?

31 / 40

Why is understanding the loading and unloading procedures so critical?

32 / 40

In safe driving, what does communicating mean?

33 / 40

For emergency braking when driving a double trailer and having to use your brakes to avoid a collision is to:

34 / 40

How do you supply air to the trailer tanks?

35 / 40

A baffled tanker has:

36 / 40

When would you lock some emergency roof hatches in a partly open position?

37 / 40

At around____the governor allows the air compressor to start pumping again:

38 / 40

Select the true statement in regards to as why you should make sure the fifth wheel plate is greased as recommended:

39 / 40

In what position should the converter dolly air tank drain valves and pintle hook be in?

40 / 40

While completing the 3rd component of the air brake check of a combination vehicle, at what psi should the tracor protection valve and parking brake valve should pop out?

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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.