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Topic 6 · Section 40

Underage Drinking and Zero Tolerance

California enforces strict laws for drivers under 21 because:

  • The legal drinking age is 21.
  • Any alcohol in a driver under 21 is unlawful — no exceptions.

đź§Ş Zero Tolerance Law (0.01% BAC)

  • If you’re under 21 and have 0.01% BAC or more, you’re in violation — even half a beer can trigger it.
  • Officers may give a PAS (preliminary alcohol screening) test on the spot.
  • Penalty: Administrative license suspension for 1 year, even without a DUI charge.

⚖️ 0.05% BAC and Underage

  • If you’re under 21 and blow 0.05% or higher:
    • You’ll face the admin suspension, plus possibly a misdemeanor DUI citation.
    • Requires a DUI program, fines, and other consequences.
    • Jail not typical, but record, insurance, and costs are major.

🍾 Possession of Alcohol in Vehicle (Under 21)

  • Illegal unless:
    • You’re with a parent/legal guardian, or
    • Transporting for work purposes.
  • Penalties for first offense:
    • Up to $1,000 fine
    • License suspension for 1 year
    • Vehicle impoundment for up to 30 days

🆔 False ID Use

  • Using a fake ID to buy alcohol or enter bars can result in:
    • Up to 1-year license suspension
    • Criminal charges for fraud or forgery

📚 DUI Education for Teens

  • Teens who commit any alcohol/drug-related offense must attend a youth DUI program.
  • Driver’s ed also includes mandatory DUI education, as crashes (often DUI-related) are a leading teen killer.

👥 Peer Pressure & Safe Choices

  • NEVER get in a car with someone who’s been drinking.
  • Have a plan:
    • Use Uber/Lyft
    • Call a parent or trusted adult
    • Stay put if needed
  • A DUI can ruin more than your night — it can end lives or derail your future.

  • A DUI at 17 or 18 can:
    • Hurt college applications
    • Skyrocket insurance or lead to policy cancellation
    • Limit job opportunities (especially where background checks or driving are required)
    • Stay on CA driving record for 10 years (longer on full criminal record)

đźš· License Suspension for Non-Driving Alcohol Offenses

Even if you weren’t driving, you can still lose your license:

  • Minor in Possession (e.g., caught with alcohol at a park or party)
  • Fake ID use
  • Vandalism
  • Truancy (habitual school skipping)

➡️ If you’re 13–20, courts can order DMV to suspend or delay your license for these offenses.


âś… Summary

  • For drivers under 21, the rule is simple:
    • ZERO drinks before driving.
    • Stay smart, stay sober, and protect your future.

Check you have it

107 practice questions cover alcohol, drugs, and driving (dui laws), each explaining the reasoning behind its answer.

Practise this topic

Source: California Driver's Handbook (DL 600, rev. 6/2025). Edited by Fernando Aguilera. Aprobify is not affiliated with the California DMV.

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