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 slack adjusters:

2 / 40

How do you test the trailer service brakes?

3 / 40

Shifting into a lower gear and removing your foot off of the accelerator to slow your vehicle is known as?

4 / 40

While driving at night, which lights should you use as often as you can?

5 / 40

Select the true statement in regards to handing triples and doubles

6 / 40

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

7 / 40

The driver's manual advises you to disconnect the steering axle brake to keep the rig straight:

8 / 40

At 55 miles-per-hour it takes about 6 seconds to stop a fully loaded truck and the braking distance is:

9 / 40

The most stable tanker shape is:

10 / 40

This item does not need to be checked during the cab check.

11 / 40

When transporting both hazardous and non hazardous materials, your bills must:

12 / 40

What product is typically carried in a liquid tank trailer without baffles?

13 / 40

A disruptive passenger:

14 / 40

Select the definition for outage:

15 / 40

You are required to have a tank endorsement when transporting:

16 / 40

When is it acceptable for non-hazardous materials to be described by hazard class words or identification numbers?

17 / 40

How can you determine if your vehicle is equipped with ABS?

18 / 40

What do you check when doing a visual inspection of the coupling?

19 / 40

Water is drained from the compressed air tanks because:

20 / 40

As the driver of a bus, how can you best avoid hindering other traffic on the highway?

21 / 40

The bolst, brackets, or bushings that attach the air bag and/or spring to the vehicle and axle frame are _____.

22 / 40

Which of the following hazard classes utilizes a transport index in order to determine how much of it can be loaded on a single vehicle for transport?

23 / 40

Within 3 minutes, this gauge pressure should build to 90 psi from 50 psi.

24 / 40

While completing the 2nd component of the air brake check you are required to turn the electrical power on, begin fanning off the air pressure by rapidly relasing and apply the foot brake and _____.

25 / 40

Your bus starts to lean toward the outside on a banked curve, you are:

26 / 40

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

27 / 40

A placarded vehicle must carry what type of fire extinguisher?

28 / 40

Which of the following statements is FALSE?

29 / 40

What is a common cause of tire fires?

30 / 40

Select which is not an engine compartement belt:

31 / 40

What position should the heaviest trailer be in when pulling 3 trailers?

32 / 40

The safety valve is usually set to open at:

33 / 40

What method should be used to test that the air is flowing to all the trailers?

34 / 40

What is always required before loading, driving, or unloading a tanker?

35 / 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?

36 / 40

What school bus accidents should be reported?

37 / 40

Some school busses are marked with the LNG placard. What does LNG stand for?

38 / 40

Drivers placard their vehicle to _____ the risk.

39 / 40

When is it best to wear your seat belt?

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.