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The CDL general knowledge test is required to be taken by all CDL applicants. The Kentucky 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 Kentucky 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 KY 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. Whether or not you load and secure your load yourself, you are responsible for:
recognizing overloads and poorly balanced weight.
knowing your cargo is properly secured.
inspecting your cargo.
All of the above.
2. What should you do when confronted by an aggressive driver?
Ignore gestures
Hold-your-own in your travel lane
Make eye contact
Challenge them by speeding up
3. Which of the following should you check for looseness, damage, sticking or improper settings?
Transmission controls
Steering wheel
Brake controls
All of the above.
4. What are some advantages of going right instead of left around an obstacle?
You can avoid a head-on collision.
Someone may be passing to the left.
There may be a shoulder that you can steer into.
All of the above.
5. The air compressor governor:
stops the compressor from pumping air.
controls when the air storage tanks will pump air into the air compressor.
allows the compressor to start pumping air when the tank pressure rises to the "cut-out" pressure.
All of the above.
6. Empty trucks have _________ heavily loaded trucks.
the same traction as
less traction than
half the traction than
more traction than
7. If you must stop on or by a one-way or divided highway, you must place warning devices ___ feet, ___ feet, and ___ feet toward the approaching traffic.
10; 100; 200
20; 200; 400
5; 50; 100
15; 150; 300
8. Which of the following factors is NOT used to determine your safe speed when going down a long steep downgrade?
Length and steepness of grade
Total weight of the vehicle and cargo
Time of day
9. An antilock braking system (ABS):
in order to work, requires you to apply the brakes as hard as you can.
requires a change in the way you brake.
decreases your stopping distance.
None of the above:
10. Before entering an intersection, make sure that:
there is sufficient space to clear it.
there's enough room to get at least halfway across.
accelerate smoothly and change gears as necessary.
That there is enough room for the rear of your vehicle to clear the stop line on your side.
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KY CDL Practice Test

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