South Carolina DMV CDL Doubles / Triples Quick Practice Test

South Carolina DMV CDL Doubles / Triples 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.

99.5% Pass Rate

Get Access To Official DMV Online Tests & A Master Cheat Sheet With All Questions & Answers For Your State. 99.5% Pass Rate Guaranteed!

Upgrade To Premium

Quick Facts:

Number of Questions – 20

Passing Percentage – 80%

Test Type – Free Test

1. If you have an engine fire, you should:

Open the hood as soon as possible.
Turn off the engine as soon as possible.
Not use a fire extinguisher.

2. Operating combination vehicles usually requires ____ operating single vehicles.

Less skill than
About the same level of skill as
More skill than

3. After a tire has been changed, the driver should stop after a short distance to:

Check the tightness of the lug nuts.
Ensure that the tire tread depth is good.
Ensure that the correct tire was changed.
See if rocks have gotten into the tread.

4. Driving too fast:

Is a major cause of fatal crashes.
Can be a good way to get to your destination quickly.
Should only be done if the roadway is dry.
Is acceptable in light traffic.

5. Hydraulic brakes can fail due to:

A loss of pressure.
Cold weather.
Driving uphill for long periods of time.
Grooves in the roadway.

6. Radial and bias-ply tires:

Should be used together.
Should be used together on the front of a vehicle.
Should not be used together.

7. Over-the-counter medication:

Poses no safety risks to a driver.
Is not referenced by any laws regarding driving under the influence.
Cannot impair a driver.
Can affect a person’s ability to drive safely.

8. If a trailer begins to skid, it is best for the driver to:

Release the brakes.
Accelerate.
Quickly turn the steering wheel in one direction, then in the other.

Page 1 of 3