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The CDL general knowledge test is required to be taken by all CDL applicants. The Florida CDL test consists of 50 questions. To pass, you must correctly answer at least 40 questions (80%). The general knowledge test covers the contents of the Florida CDL Manual. All CDL applicants (Class A, B and C) must study the following sections: Driving Safely, Transporting Cargo Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Vehicle Inspection Test, Basic Control Skills Test, Road Test. In addition, the Class A CDL test will include questions based on the Combination Vehicles section. Take this CDL practice test now to prepare for the actual FL general knowledge test! To get your CDL, you must pass both the knowledge and skills tests. CDL knowledge tests include: General Knowledge, Passenger Transport, Air Brakes, Combination Vehicles, Hazardous Materials, Tanker Vehicles, Doubles/Triples, School Bus, Firefighter. Depending on what class of license (A, B or C) and endorsements you need, you must take one or more knowledge tests. A special endorsement is also required to drive certain types of vehicles. The following endorsements may be used with a Class A, B or C CDL: HazMat (H), Tank Vehicles (N), Tank Vehicles Transporting Hazardous Materials (X) and Passenger Transport (P). The School Bus endorsement (S) is only available for Class A or B CDL, and the Doubles/Triples endorsement (T) is only available for Class A driver's licenses.
1. If your drive wheels begin to spin, you should:
use the parking brake.
take your foot off the accelerator.
pump the brake pedal three times.
use the Anti-lock Braking System.
2. On a level surface:
wheel chocks make it easier for the vehicle to roll.
wheel chocks should not be used when the brakes are very hot.
should never be used if the brakes are very wet.
you should use wheel chocks to hold the vehicle.
3. If you are traveling at 55 mph in a 30 foot vehicle, how many seconds of following distance should you have?
5 seconds
4 seconds
3 seconds
2 seconds
4. To back-up safely, you should:
use mirrors on both sides.
look at your path.
start in the proper position.
All of the above.
5. Name two situations in which it may not be safe to operate your vehicle at legal maximum weights.
In heavy traffic or at night
Over bridges or through tunnels
During bad weather or in mountains
All of the above.
6. What is Gross Vehicle Weight (GVW)?
The total weight of a single vehicle including its cargo.
The total weight of a vehicle, including that of any trailers.
A vehicle's maximum weight rating, specified by its manufacturer.
None of the above.
7. What is true about tire chains?
You should learn how to put the chains on before you need to do it in snow.
You must carry the at least 6 chains and extra cross-links.
You should watch the official video tutorial by the manifacturer before putting them on.
All of the above.
8. Strong winds can make it difficult to stay in your lane especially when driving:
heavier vehicles.
vehicles with ABS.
flatbed trailers.
lighter vehicles.
9. When driving at night, if drivers of oncoming vehicles do not put their low beams on, you should:
look directly at the headlights.
look slightly to the right at a right lane or edge marking, until the vehicles pass.
pull off the road and stop.
flash your high beams to remind the other drivers to use their low beams.
10. After drinking, which of the following can help you sober up?
Taking a cold shower.
Drinking black coffee. The caffeine will eliminate the effects of alcohol.
Taking a cold shower after drinking.
None of the above.
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FL CDL Knowledge Test

Number of questions: 50
Correct answers to pass:40
Passing score:80%
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