California DMV DUI and Alcohol Laws 1 — Questions and Answers
Question 1: What is the legal blood alcohol concentration (BAC) limit for adult drivers 21 and older in California?
- 0.05%
- 0.08% (Correct answer)
- 0.10%
- 0.12%
Correct answer: 0.08%
California law sets a BAC limit of 0.08% for drivers 21 and older — exceeding this is per se DUI.
Question 2: What is the BAC limit for drivers under 21 in California?
- 0.08%
- 0.05%
- 0.02%
- 0.01% (Correct answer)
Correct answer: 0.01%
California has a zero-tolerance law for drivers under 21, with a BAC limit of 0.01% — essentially any detectable alcohol.
Question 3: If a driver under 21 is convicted of a first DUI in California, their license will be suspended for:
- 30 days
- 90 days
- 1 year (Correct answer)
- 2 years
Correct answer: 1 year
A first DUI conviction for an under-21 driver results in a one-year license suspension in California.
Question 4: What does California's 'implied consent' law mean?
- You consent to roadside field sobriety tests
- By driving, you consent to chemical BAC testing when lawfully arrested for DUI (Correct answer)
- You consent to having your vehicle searched
- You consent to a breathalyzer test at any time
Correct answer: By driving, you consent to chemical BAC testing when lawfully arrested for DUI
California's implied consent law means any person driving in the state automatically agrees to chemical testing if lawfully arrested for DUI.
Question 5: Refusing a chemical test after a lawful DUI arrest in California results in:
- No additional penalty beyond the DUI charge
- A mandatory one-year license suspension for a first offense (Correct answer)
- A warning only
- A 30-day license suspension
Correct answer: A mandatory one-year license suspension for a first offense
Refusing a chemical test after a lawful DUI arrest triggers an automatic one-year license suspension under California's implied consent law.
Question 6: What BAC level is the legal limit for commercial vehicle drivers in California?
- 0.08%
- 0.06%
- 0.04% (Correct answer)
- 0.02%
Correct answer: 0.04%
Commercial drivers in California are held to a stricter BAC limit of 0.04% due to the safety responsibilities of operating large vehicles.
California DMV DUI and Alcohol Laws 1
What is the legal blood alcohol concentration (BAC) limit for adult drivers 21 and older in California?