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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. The application pressure gauge:
tells you how much pressure is in the air tanks.
shows how much air pressure is being applied to the brakes.
stops the compressor from pumping air.
protects the tank and the rest of the system from too much pressure.
2. Which of the following is NOT correct? Anti-lock brakes:
give drivers more control over the vehicle during braking.
require drivers to apply the brakes as hard as they can without locking the wheels.
help drivers avoid wheel lock up.
help drivers avoid skids caused by over braking.
3. If a worker is close to the roadway in a work zone, you should:
pull off the road and stop.
drive at the posted speed limit.
reduce your speed below the posted speed limit.
drive on the shoulder.
4. Before transporting a sealed load, make sure:
that there is a picture of its contents.
that you don't exceed gross weight and axle weight limits.
that the load can be inspected.
All of the above.
5. For an electrical equipment fire or a gasoline or oil fire, use:
a type B:C fire extinguisher only.
a type A:B:C or B:C fire extinguisher.
a type D fire extinguisher only.
6. When making a turn you should:
make gestures to get the attention of other drivers.
signal early.
honk your horn.
turn the signal off before entering the turn.
7. Reaction distance is the distance you will continue to travel, in ideal conditions:
before the vehicle comes to a complete stop.
before you physically hit the brakes.
from the time your eyes see a hazard until your brain recognizes it.
All of the above.
8. In your mirror, you see a car approaching from the rear. The next time you check your mirror, you don't see the car. If you wish to change lanes, you should:
wait until you are sure the car isn't in your blind spot.
ease into the other lane slowly so the other car can get out of the way.
assume the car left the roadway and change lanes as normal.
None of the above.
9. Controlled braking:
can be used to keep your vehicle in a straight line and allow you to turn if necessary.
must be used when you need to turn sharply while braking.
involves pumping the brakes while keeping steering wheel movements very small.
involves locking the wheels and then releasing the brakes.
10. During a pre-trip inspection, when checking the power steering hoses, you should:
check for leaks.
check that the brake chambers are not leaking.
look for broken or distorted coil springs.
check for damaged or bent rims.
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FL CDL Knowledge Test

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