What is the typical BAC limit for drivers under age 21?

• A. 0.08
• B. 0.00 to 0.02
• C. 0.05
• D. 0.10

Answer: (B)

Underage driving follows a zero-tolerance approach to alcohol. The limit is set very low because even small amounts of alcohol can impair judgment, coordination, and reaction time, especially for new drivers. The typical standard for drivers under 21 is a BAC in the range of 0.00 to 0.02. This reflects the aim to prevent any measurable impairment from alcohol in this age group.

Higher limits like 0.08, 0.05, or 0.10 are standard for adult drivers and do not apply to under-21 drivers in jurisdictions with zero-tolerance rules. So the 0.00–0.02 range best matches the common policy for those under 21.