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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. You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
increase your speed to approximately 45 mph, and then apply release the brakes.
apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
maintain your current speed, and apply the brakes when you reach 50 mph to gradually reduce your speed to 40 mph.
2. The total weight of a single vehicle including its load is called:
Gross Vehicle Rating (GVR)
Gross Vehicle Weight Rating (GVWR)
Gross Combination Weight (GCW)
Gross Vehicle Weight (GVW)
3. Your total stopping distance consists of __________ plus reaction distance plus braking distance.
partial stopping distance
following distance
perception distance
passing distance
4. You must have at least ________ tread depth in every major groove on front tires.
1/2 inch
4/32 inch
2/32 inch
1/16 inch
5. During freezing weather, which area is most likely to be slippery after it rains?
Roads that look wet.
Shaded areas.
All of the above.
6. If you have to drive off the road, you should:
keep one set of wheels on the pavement, if possible.
leave the road completely.
brake as hard as you can to maintain control.
fully apply the brakes until your speed has dropped to about 20 mph.
7. When starting your vehicle, oil pressure should come up to normal:
within 5 minutes of driving.
within seconds.
in about two minutes.
in about a minute.
8. B:C type fire extinguishers are suitable for dealing with:
wood fires.
cloth and paper fires.
tire fires.
electrical fires and burning liquids.
9. To maintain alertness while driving, you should:
have another person ride with you.
avoid medications that cause drowsiness.
avoid heavy foods.
All of the above.
10. If you let air out of hot tires:
the tires will cool off much sooner.
air pressure will increases, causing the tires to blow out.
as the tire cools, the air pressure will be too low.
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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