Drunk and drugged driving laws in North Carolina
Driving while impaired (DWI) is one of the most serious offenses on North Carolina roads, and the state is especially strict with young drivers. If you are under 21, driving with any alcohol or a controlled substance in your body is an offense in its own right.
Every North Carolina driver education course spends at least 6 hours on impaired driving, and the handbook has a full chapter on alcohol and the law.
By the end of this topic you can
- You can explain the difference between DWI and the under-21 offense.
- You can state the adult and commercial blood alcohol limits.
- You can describe what implied consent means and the cost of refusing a test.
- You can explain how an alcohol conviction affects your license and insurance.
What you need to know and understand
- The adult limit is 0.08 blood alcohol concentration; for commercial vehicles it is 0.04.
- Under 21, driving after consuming alcohol or a controlled substance is a separate offense that needs no 0.08 reading (G.S. 20-138.3).
- A conviction for the under-21 offense brings a one-year license revocation (G.S. 20-13.2).
- By driving in North Carolina you agree to chemical testing if charged with an implied-consent offense.
- A willful refusal brings an immediate civil revocation of at least 30 days and a separate 12-month NCDMV revocation (G.S. 20-16.2).
- Insurance: the under-21 offense is 4 points (90% increase); DWI or 0.08 is 12 points (340% increase).
- Only time lowers blood alcohol; coffee, food and cold showers do not.
Two different offenses
DWI applies to everyone. You can be convicted if you are appreciably impaired by alcohol or drugs, or if your blood alcohol concentration is 0.08 or more.
The under-21 offense is separate. It does not require impairment or any set reading, so a single drink can be enough. It also covers controlled substances, including cannabis. The only exception is a controlled substance you obtained lawfully and took in therapeutically appropriate amounts, and even then DWI still applies if you are impaired. A young driver can face both charges at once.
What a conviction costs a young driver
- A one-year license revocation for the under-21 offense.
- A provisional license holder's move to the next GDL level can be delayed.
- 4 insurance points under the Safe Driver Incentive Plan, raising the family premium by 90% for 5 policy years for convictions since July 1, 2025.
- Separate penalties for buying or trying to buy alcohol under 21, including with a fake ID.
If you are stopped and asked for a test
- Stay calm, keep your hands visible and follow the officer's instructions.
- Before a chemical test, the officer must tell you your rights, including what refusal means.
- You may call a lawyer and ask for a witness, but testing will wait only a short time.
- Refusing does not avoid trouble: it brings its own revocation periods, separate from any conviction.
Common mistakes
- Believing you are safe under 0.08 at 19. For under-21 drivers, any alcohol counts.
- Thinking cannabis is treated differently from alcohol. The under-21 offense covers controlled substances too.
- Trying to sober up with coffee. Only time lowers blood alcohol.
- Getting in a car with a driver who has been drinking. Call a parent or arrange a sober ride instead.
Test yourself: Drunk and drugged driving laws in North Carolina
Answer each question, then read the explanation. Questions come in a random order each time.
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Sources: North Carolina Driver Handbook, Chapter 2 Alcohol and the Law (North Carolina Division of Motor Vehicles); North Carolina General Statutes G.S. 20-138.3, 20-13.2 and 20-16.2; North Carolina Department of Insurance, Safe Driver Incentive Plan; North Carolina Department of Public Instruction, Driver Education Administrative Policies and Procedures Manual. Independent guide, not affiliated with any licensing agency. Always check the latest official rules with the North Carolina licensing agency.