South Carolina DMV CDL General Knowledge Quick Practice Test 1 For 2023

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. An Anti-Lock Braking System (ABS):

2. When traveling down a steep grade, you switch into a lower gear:

3. While still below the legal limit, a driver operating a CMV with a detectable amount of alcohol in their system will:

4. Black ice is:

5. Rolling backward when beginning to accelerate is dangerous because:

6. What is the penalty for operating a CMV that is placarded for hazardous materials while you are under the influence of alcohol?

7. Retreaded tires:

8. If your truck or trailer catches fire, you should: