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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 should use your horn to:
to let others know you are there.
to let others know you are about to increase your speed.
to let others know you are about to break.
to let others know you are an experienced driver.
2. In an emergency, if you have to drive off the road you should:
keep one set of wheels on the pavement, if possible.
avoid using the brakes until your speed has dropped.
stay on the shoulder (if possible) until your vehicle has come to a stop.
All of the above.
3. You should signal your intention to turn at least ____ before turning or changing lanes.
100 feet
250 feet
75 feet
50 feet
4. When you push the brake pedal down, air brakes work:
after a short delay.
only when ABS is working.
after about 15 seconds.
5. If stopped on a hill, how can you start moving without rolling back?
Release the parking brake before you have applied enough engine power to keep from rolling back.
Press on the gas pedal, even if you have to roll back a little.
Partly engage the clutch before you take your right foot off the brake, put on the parking brake if necessary.
None of the above.
6. If the safety relief valve in the air brake system releases air:
this will supply more power to the brakes.
the valve is fully operational.
this will supply more power to the drive wheels.
something is wrong.
7. When you take a break in the middle of your trip, you should check:
tires, brakes, lights and cargo securement devices.
gauges for signs of trouble.
heater, defroster and windshield wiper blades.
missing exhaust pipes.
8. The air tanks should be drained completely to remove:
the radiator cap.
water and oil.
carbon monoxide.
9. Emergency brakes must be held on by:
hydraulic pressure.
mechanical force.
air pressure.
dynamic pressure.
10. Older trailers do not have spring brakes. If the air supply leaks away:
the trailer will stop normally.
there will be no emergency brakes.
the ABS won't work properly.
All of the above.
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FL CDL Practice Test

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