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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Kentucky CDL combination test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The test covers the combination vehicles section of the Kentucky CDL Manual. Take this practice test now to prepare for the actual KY CDL combination test!
1. Rollovers happen when drivers:
stop too often.
turn too fast.
brake too hard.
turn too slowly.
2. Which of the following is NOT part of the procedure to raise the landing gear?
Raising the landing gear all the way up
Using the low range gear, if equipped, to begin raising the landing gear
Safely securing the crank handle, after raising the landing gear
Using the high range gear, if equipped, to begin raising the landing gear
3. Why should you cover your cargo?
To protect the cargo from weather.
Because spill protection is a safety requirement in many states.
To protect people from spilled cargo.
All of the above.
4. To stop a trailer skid, you should:
use the trailer hand brake to straighten out the rig.
countersteer to get traction back.
use the brakes to slow down.
release the brakes to get traction back.
5. The best way to recognize that your trailer has started to skid is:
by using retarders.
by seeing it in your mirrors.
by hearing squeaking noises from the wheels.
None of the above.
6. ABS:
should only be used on dry roads.
replaces your normal brakes.
allows you to brake harder.
is an addition to your normal brakes.
7. By pushing the trailer air supply control knob in, you:
supply the trailer with air.
shut the air off and put on the trailer emergency brakes.
supply the tires with air.
keeps air in the tractor or truck brake system.
8. The tire load rating is stated:
on the side of each tire.
on the dashboard.
on each axle.
inside the suspension system.
9. When more cargo is piled up in a truck, the center of gravity moves:
to the right side of the truck.
higher up from the road.
to the left side of the truck.
closer to the ground.
10. If are being followed closely, you should:
decrease your following distance.
change lanes quickly.
increase your following distance.
flash your brake lights.
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KY CDL Combination Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
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