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The CDL general knowledge test is required to be taken by all CDL applicants. The Tennessee 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 Tennessee 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 TN 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. Water in the brakes can cause the brakes to:
be weak or apply unevenly.
2. If your vehicle is equipped with a front brake limiting valve, to ensure normal stopping power make sure the control is:
in the "slippery" position.
in the "neutral" position.
in the "normal" position.
in the "off" position.
3. In mountain driving, to select a safe speed you should:
go slightly faster than the speed limit.
select a speed that's not too fast for the weight of your vehicle and cargo, the lenght and steepness of the grade, and road and weather conditions.
go 5 mph slower than the vehicle ahead.
follow the vehicle in front of you.
4. Front-end header boards:
block the forward movement of your cargo.
protect you from your cargo in case of a crash.
protect you from your cargo in case of an emergency stop.
All of the above.
5. If you must drive slowly, how should you alert following drivers?
Use your emergency flashers if it is legal
Flash your brake lights
Turn on your taillights
Help them out by signaling when it is safe to pass
6. If coolant has to be added to a system without a recovery tank, you should:
never use thick cloth to touch the radiator cap.
turn the radiator cap quickly to the first stop.
keep the engine running while adding coolant.
wait until the engine has cooled before adding coolant.
7. The following are some causes of vehicle fires:
Tailgating while smoking
Tight turns and gravel roads
Under-inflated tires and duals that touch
All of the above.
8. When making a turn, you should cancel your turn signal:
once you have begun the turn.
once you have completed the turn.
once the rear end of your cab has cleared the turn.
once more than half of your vehicle is round the turn.
9. How can you avoid rolling back when you start your vehicle?
Partly engage the clutch before you take your right foot off the brake.
Use stab braking before you engage the clutch.
Accelerate quickly so the vehicle does not jerk.
All of the above.
10. Which of the following statements is true?
Delivery truck drivers are professionals and do not pose any hazard to you.
You do not have to worry about individuals driving cars with out-of-state license plates.
You can always trust other drivers to turn in the direction that their turn signal is indicating.
Short-term or daily rental truck drivers are often not used to driving a large vehicle and may pose a hazard to you.
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Number of questions: 50
Correct answers to pass:40
Passing score:80%
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