6.3 🚔 Driving Under the Influence (DUI): Enforcement and Penalties.
🧾 Implied Consent
- By driving in California, you’ve agreed in advance to a chemical test (breath or blood) if lawfully arrested for DUI.
- Refusing the test triggers automatic penalties:
- 1-year license suspension for a first refusal (regardless of whether you’re convicted).
- Additional penalties if convicted after refusing.
➡️ Refusal is usually not advisable — your license is suspended anyway, and they can still convict using other evidence.
🚓 Traffic Stops and Investigation
- An officer may stop you for erratic driving, traffic violations, or at a DUI checkpoint.
- Investigation steps may include:
- Questions (“Have you been drinking?”)
- Observations (smell of alcohol, slurred speech, red eyes)
- Field Sobriety Tests (FSTs) (walk-and-turn, eye-tracking, one-leg stand)
- PAS (Preliminary Alcohol Screening) device — handheld roadside breath test
👮 Arrest and Chemical Testing
- If the officer suspects DUI:
- You’ll be arrested and required to take a breath or blood test.
- These results are key to proving your BAC level.
🛑 Administrative License Suspension (APS)
- Under California’s Admin Per Se law:
- License is immediately confiscated after arrest if:
- You’re over 0.08% BAC, or
- You refuse testing
- You’ll receive a 30-day temporary license, then:
- 4-month suspension (if test failed), or
- 1-year suspension (if refused)
- License is immediately confiscated after arrest if:
⚖️ Criminal Penalties for DUI Conviction
First Offense (Misdemeanor DUI):
- 💵 Fines: $390 base fine + assessments = ~$1,500–$2,000
- 🚫 License Suspension: 6 months (can overlap with APS)
- 🧠 DUI School: Mandatory 3-month program
- 📅 Probation: Typically 3–5 years (informal)
- 🏛 Jail: Up to 6 months (often waived if no crash)
- 💼 Other: Community service, victim panel, work program
- 🚘 IID (Ignition Interlock Device): Often required for 6 months to drive again. It is a breath tester wired to the ignition: the engine will not start until you blow clean. California’s statewide IID programme was extended through January 1, 2033 by AB 366.
Repeat Offenses (within 10 years):
- 2nd DUI:
- Jail: 96 hours to 1 year
- License suspension: 2 years
- DUI School: 18 months
- 3rd DUI:
- Harsher penalties, 3-year revocation
- 4th DUI:
- Can be charged as a felony
DUI Causing Injury or Death:
- Felony charges possible, even for a first offense.
- May include prison time and restitution.
- Vehicular manslaughter or murder if fatality occurs.
🧒 Under 21 (Zero Tolerance Rules)
- 0.01% BAC or more: 1-year license suspension (admin penalty)
- 0.05%+ BAC: Can face full DUI charges + mandatory DUI school
- Alcohol in car: Under 21 cannot have any alcohol in vehicle (even sealed) unless with a parent or for work
🍺 Open Container Law
- 🚫 No open containers of alcohol in passenger area
- Under 21: Even having alcohol (open or sealed) may lead to misdemeanor and license suspension
🌿 Cannabis and DUI
- Illegal to drive impaired by marijuana, even though recreational use is legal.
- Open marijuana containers or consumption in vehicle is not allowed — store in trunk.
- No smoking in the vehicle, even by passengers.
💊 Drug DUI
- Prescription meds (e.g., Xanax, opioids) count if they impair.
- Officers may call a Drug Recognition Expert (DRE).
- Test includes eye movement, pulse, behavior, and possible blood or urine testing
- Refusal rules still apply.
🚴 DUI on Other Vehicles
- DUI laws apply to cars, motorcycles, and even bicycles (with lesser penalties for biking under the influence).
🚨 Bottom Line:
Don’t risk it. Use a:
- Designated driver
- Taxi or rideshare
- Stay where you are
DUI isn’t just a bad decision — it’s a potential tragedy and a legal nightmare.