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NORTH CAROLINA NCDMV · WRITTEN TEST (CLASS C)

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Alcohol, drugs and DUI: North Carolina NCDMV written test practice

5 free practice questions on alcohol, drugs and DUI for the North Carolina NCDMV written knowledge test, each with the correct answer and a short explanation. Study them here, then check yourself in the interactive quiz or the exam simulator.

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1. For drivers 21 years of age and older, driving with a blood alcohol concentration (BAC) is considered illegal starting at:

  1. 0.05%
  2. ✓ 0.08%
  3. 0.10%
  4. Any detectable amount

Why: 0.08% — the legal limit for drivers aged 21 and older.

2. Under North Carolina's zero-tolerance law, what amount of alcohol can result in a conviction for a driver under 21?

  1. Only a blood alcohol concentration of 0.08% or higher
  2. ✓ Any measurable amount of alcohol in their system
  3. Only if they are visibly impaired
  4. There is no special rule for drivers under 21

Why: North Carolina's zero-tolerance law makes it illegal for anyone under 21 to drive with any measurable amount of alcohol in their system; a reading of 0.01-0.07 can trigger a one-year license suspension and a fine, while 0.08 or above brings a full adult DWI charge.

3. A commercial vehicle driver is considered to be intoxicated if their BAC is:

  1. 0.08%
  2. ✓ 0.04% and higher
  3. 0.02%
  4. 0.10%

Why: For commercial drivers, a stricter limit applies—0.04%.

4. What does North Carolina's implied consent law mean for drivers?

  1. ✓ By driving on North Carolina roads, a driver has agreed to take a chemical test if lawfully arrested for DWI
  2. Drivers may refuse any chemical test with no consequences
  3. It only applies to commercial drivers
  4. It requires drivers to carry proof of insurance in the vehicle at all times

Why: Simply by driving in North Carolina, a person is considered to have consented to a breath, blood, or urine test if lawfully arrested on suspicion of DWI; refusing the test carries its own penalties, including license revocation.

5. Drivers and passengers are prohibited from having the following items inside the vehicle:

  1. Food or drinks
  2. ✓ An open container of alcohol
  3. Phone Holder
  4. Sunglasses

Why: Open containers of alcohol are prohibited inside the vehicle for both the driver and passengers.

About the North Carolina written test

25questions on the real test
20/25correct answers to pass (80%)
7 dayswait before retesting

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