South Dakota DMV CDL Combination Quick Practice Test

South Dakota DMV CDL Combination Quick Practice Test For 2024

CDL Class A, B or C. Complete CDL driver training course. All the questions in this test are from the official DMV written exam. You can use our free online tests to evaluate how likely you are to pass the official DMV test. Or you can just cut to the chase and increase your chances of passing by upgrading to Premium Membership and unlock official DMV tests. In addition, you will also receive a master cheat sheet which contains all your state’s DMV questions and answers. Premium membership also unlocks a smart tracker which keeps an inventory of all incorrectly answered questions for easy, fast and effective revision. Practice with our free tests or hit Upgrade button below for premium access and increase your chances of passing your DMV written exam.

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Quick Facts:

Number of Questions – 20

Passing Percentage – 80%

Test Type – Free Test

1. If a parked trailer does not have spring brakes, you should keep the trailer from moving by:

Using the air brakes.
Using wheel chocks.
Parking near a wall.
Parking on a slight incline.

2. The trailer hand valve should be used:

Regularly to activate the trailer brakes in all driving conditions.
Only to test the trailer brakes.
Only in inclement weather when the trailer may skid.
Only if the trailer is carrying a load.

3. What does the trailer air supply control look like?

It is a square blue knob.
It is a triangular yellow knob.
It is an eight-sided red knob.
It is a circular orange knob.

4. If oil and water build up in your vehicle's air tanks, the brakes:

May not work correctly.
May feel squishy.
Will squeal loudly when used.
Will be extremely sensitive.

5. Starting in which year were newly manufactured trailers required to have ABS?

1972
1987
1998
2004

6. If your vehicle gets stuck on railroad tracks, you should:

Sit in the cab and call for help.
Exit the cab and walk away from the tracks.
Motion for another driver to push your vehicle.

7. In a combination rig, it is best to make:

Quick, sudden stops.
Sharp turns.
Quick accelerations.
Slow, planned stops.

8. A combination vehicle has:

One air line.
Two air lines.
Three air lines.
Four air lines.

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