---
title: "California Vehicle Code 23152(a) - DUI of Alcohol: Laws, Penalties & Defenses"
description: "VC 23152(a) makes it illegal to drive under the influence of alcohol in California. Learn penalties by offense, defenses, and DMV consequences. Free consultation."
url: "https://www.thehfirm.com/penal-codes/vehicle-code-23152-a-driving-under-the-influence"
site: "H Law Group"
---

# California Vehicle Code 23152(a) - DUI of Alcohol: Laws, Penalties & Defenses

VC 23152(a) makes it illegal to drive under the influence of alcohol in California. Learn penalties by offense, defenses, and DMV consequences. Free consultation.

Topics: DUI, Vehicle Code, Alcohol, Criminal Defense, Los Angeles

California [Vehicle Code 23152(a)](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?sectionNum=23152.&lawCode=VEH) makes it a crime to drive while impaired by alcohol. Unlike VC 23152(b), which focuses on your blood alcohol concentration (BAC), this law targets actual impairment. You can be convicted under 23152(a) even if your BAC is below 0.08% if prosecutors prove alcohol affected your ability to drive safely.

Most DUI arrests result in charges under both 23152(a) and 23152(b). This gives prosecutors two paths to conviction: one based on observed impairment, one based purely on your BAC number. If convicted of both, it counts as a single DUI for sentencing purposes.

## What Does VC 23152(a) Actually Say?

The statute is straightforward: "It is unlawful for a person who is under the influence of any alcoholic beverage to drive a vehicle."

"Under the influence" means your physical or mental abilities are impaired to the point where you cannot drive with the caution of a sober person in similar circumstances. This is a subjective standard. There is no magic number. A lightweight drinker might be impaired at 0.05% BAC while a heavy drinker might appear functional at 0.10%.

## Elements Prosecutors Must Prove

To convict you under VC 23152(a), the prosecution must prove two things beyond a reasonable doubt:

1. You drove a motor vehicle
2. You were under the influence of alcohol at the time you drove

Notice what is not on that list: a specific BAC level. That is the key difference between 23152(a) and 23152(b).

## VC 23152(a) vs. VC 23152(b): What is the Difference?

These two charges address DUI from different angles:

- **23152(a)** is subjective. It asks: Was your driving actually impaired by alcohol? Prosecutors rely on officer observations, field sobriety test results, and driving patterns.
- **23152(b)** is objective. It asks: Was your BAC 0.08% or higher? It does not matter if you were driving perfectly. The number alone is enough.

Prosecutors charge both because each has strategic value. If your BAC test gets thrown out, they still have 23152(a). If your driving looked fine, they still have 23152(b). Charging both doubles their chances of conviction.

## Evidence Police Use to Build a 23152(a) Case

Since 23152(a) is about impairment rather than a number, police focus on gathering circumstantial evidence of intoxication:

- **Driving patterns:** Swerving, weaving, straddling lanes, delayed reaction to traffic signals, driving without headlights
- **Physical symptoms:** Bloodshot or watery eyes, slurred speech, flushed face, smell of alcohol, unsteady balance
- **Field sobriety tests:** Walk-and-turn, one-leg stand, horizontal gaze nystagmus (eye movement test)
- **Statements:** Admissions about drinking, where you were coming from, how many drinks you had
- **Chemical test results:** BAC from breath or blood tests (used as supporting evidence even if below 0.08%)

## Penalties for VC 23152(a) Convictions

DUI penalties in California escalate with each offense within a 10-year lookback period. A first, second, or third offense is typically charged as a misdemeanor. A fourth offense within 10 years, or any DUI causing injury, can be charged as a felony.

### First Offense DUI

- 3 to 5 years informal (summary) probation
- 48 hours to 6 months county jail (often no jail if probation granted)
- $390 to $1,000 in fines plus penalty assessments (total often reaches $2,000+)
- 6-month license suspension (can drive immediately with IID installation)
- DUI school: 3 months (30 hours) if BAC under 0.15%, 6 months if 0.15-0.19%, 9 months if 0.20%+
- Victim Impact Panel (MADD) attendance

### Second Offense DUI (within 10 years)

- 3 to 5 years informal probation
- 96 hours to 1 year county jail (minimum 96 hours mandatory)
- $390 to $1,000 in fines plus penalty assessments
- 2-year license suspension (1 year with IID)
- 18 or 30-month DUI school program

### Third Offense DUI (within 10 years)

- 3 to 5 years informal probation
- 120 days to 1 year county jail (minimum 120 days, or 30 days with 30-month DUI school)
- $390 to $1,000 in fines plus penalty assessments
- 3-year license revocation (2 years with IID)
- 30-month DUI school program
- Designation as Habitual Traffic Offender (HTO)

**Aggravating factors** that increase penalties: BAC of 0.15% or higher, refusing a chemical test, speeding or reckless driving, causing an accident, having a minor (under 14) in the vehicle.

## License Suspension and DMV Hearings

A DUI arrest triggers two separate proceedings: your criminal case in court and an administrative action through the DMV. These run on parallel tracks, and you can lose your license even if you win your criminal case.

### The 10-Day DMV Deadline

When police arrest you for DUI and your BAC tests at 0.08% or higher (or you refuse testing), they confiscate your license and give you a pink temporary license. You have exactly **10 days from your arrest** to request an [Administrative Per Se (APS) hearing](https://www.dmv.ca.gov/portal/driver-education-and-safety/dmv-safety-guidelines-actions/driving-under-the-influence/) with the DMV. Miss this deadline and your license suspension begins automatically on day 30.

Requesting the hearing extends your temporary license until the hearing takes place. At the hearing, you can challenge whether the officer had legal cause for the stop, whether your arrest was lawful, and whether the chemical testing was properly conducted.

### Suspension Lengths

- **First offense:** 6 months (4 months if you win the criminal case but lose the DMV hearing). You can drive immediately with an IID for 6 months.
- **Second offense:** 2 years (1 year with IID)
- **Third offense:** 3 years (2 years with IID)
- **Chemical test refusal:** 1 year (first offense), 2 years (second), 3 years (third). Refusal suspensions run even if your case is dismissed.

The only way to completely avoid a license suspension is to win both your criminal case and your DMV hearing.

## Defenses to VC 23152(a) Charges

DUI cases are not automatic convictions. The prosecution must prove impairment beyond a reasonable doubt, and there are multiple ways to attack their case.

### Your Driving Was Not Impaired by Alcohol

Sober drivers cause most traffic violations. Your driving issues may have been caused by:

- Distraction (phone, navigation, passengers)
- Fatigue
- Sun glare or poor visibility
- Road conditions or construction
- Vehicle mechanical problems
- Medical conditions (diabetic episode, allergies, coughing fit)

### Field Sobriety Tests Are Unreliable

Field sobriety tests are designed for failure. Even the NHTSA admits these tests are not 100% accurate. You may have performed poorly because of:

- Nerves and anxiety (being pulled over is stressful)
- Physical conditions (bad knees, back problems, inner ear issues)
- Age or weight
- Uncomfortable footwear (heels, boots, sandals)
- Uneven pavement or poor lighting
- Officer gave unclear or incorrect instructions

### Police Misconduct or Procedural Errors

Evidence obtained through illegal police conduct can be suppressed. Common issues include:

- **Illegal traffic stop:** Police need reasonable suspicion to pull you over. A hunch is not enough.
- **No probable cause for arrest:** An arrest requires more than bloodshot eyes and a faint smell of alcohol.
- **Testing violations:** Breath and blood tests must follow Title 17 of the California Code of Regulations. Improper calibration, maintenance, or administration can invalidate results.
- **Miranda violations:** Statements made during custodial interrogation without Miranda warnings may be inadmissible.

### Rising Blood Alcohol Defense

Alcohol takes time to absorb into your bloodstream. If you drank shortly before driving, your BAC may have been below 0.08% while you were actually driving but rose above 0.08% by the time you were tested at the station. The law cares about your BAC at the time of driving, not at the time of testing.

## DUI Probation Terms

Most first-time DUI offenders receive informal (summary) probation instead of jail time. Probation typically lasts 3 to 5 years and includes these conditions:

- Do not drive with any measurable alcohol in your system (zero tolerance, not 0.08%)
- Submit to chemical testing if stopped for suspicion of DUI
- Do not commit any new criminal offenses
- Complete DUI school and pay all fines

Judges may also order AA meetings, community service, or a treatment program. Violating probation can result in jail time.

## Insurance Consequences and SR-22

A DUI conviction will significantly increase your insurance premiums. California requires you to file an SR-22 certificate of financial responsibility for 3 years after license reinstatement. This is not insurance itself but proof that you carry the state-required minimum coverage.

You do not have to tell your insurer about the DUI unless there was an accident. However, they may find out when they run a background check at renewal.

## Immigration Consequences

A simple misdemeanor DUI involving only alcohol is generally not considered a deportable offense or a crime involving moral turpitude (CIMT). However, aggravating factors can change this analysis:

- DUI with injury may be considered a CIMT
- DUI with drugs can have more serious immigration consequences
- Multiple DUIs can affect discretionary relief applications

Non-citizens facing DUI charges should consult with both a criminal defense attorney and an immigration attorney.

## Expunging a DUI Conviction

After you complete probation, you can petition the court to expunge your DUI conviction under Penal Code 1203.4. Expungement withdraws your guilty plea and dismisses the case. Employers cannot use an expunged conviction as a basis for denying you a job.

Expungement does have limits. The conviction still counts as a prior if you get another DUI within 10 years. It also remains visible to licensing boards, law enforcement, and immigration authorities.

## Professional License Impacts

If you hold a professional license (nursing, law, medicine, real estate, teaching, pharmacy), you may be required to report a DUI arrest or conviction to your licensing board. Failure to report when required can result in separate disciplinary action.

Boards take DUIs more seriously if your job involves driving, working with vulnerable populations, or dispensing controlled substances. Possible consequences range from a reprimand to license suspension or revocation, though first-offense misdemeanor DUIs rarely result in license revocation.

## Related DUI Charges

VC 23152(a) is part of California's broader DUI framework:

- [**VC 23152(b):**](/penal-codes/vehicle-code-23152-b-driving-with-bac-0-08-percent-or-higher)[ Driving with BAC of 0.08% or higher (per se DUI)](/penal-codes/vehicle-code-23152-b-driving-with-bac-0-08-percent-or-higher)
- **VC 23152(d):** Commercial driver DUI (0.04% BAC threshold)
- **VC 23152(e):** Rideshare/taxi driver DUI (0.04% with passenger for hire)
- **VC 23152(f):** DUI of drugs
- **VC 23152(g):** DUI of combined alcohol and drugs
- [**VC 23153:**](/penal-codes/vehicle-code-23153-vc-dui-causing-injury)[ DUI causing injury (wobbler, can be charged as felony)](/penal-codes/vehicle-code-23153-vc-dui-causing-injury)
- [**VC 23103/23103.5:**](/penal-codes/vc-23103-23103-5-wet-reckless-dui-plea-reduction)[ Wet reckless (common plea bargain from DUI)](/penal-codes/vc-23103-23103-5-wet-reckless-dui-plea-reduction)

## Frequently Asked Questions

### Can I be convicted of DUI if my BAC was below 0.08%?

Yes. Under VC 23152(a), the question is whether alcohol impaired your driving ability, not whether you hit a specific number. If prosecutors can prove you were too impaired to drive safely, you can be convicted regardless of your BAC.

### What happens if I refused the breath or blood test?

Refusing the post-arrest chemical test triggers an automatic 1-year license suspension (first offense) and enhanced criminal penalties. You can still be charged under 23152(a) based on officer observations and field sobriety test performance.

### Will a DUI show up on a background check?

Yes, a DUI conviction appears on criminal background checks. Even after expungement, some checks (government jobs, professional licenses) may still reveal the conviction. However, most private employers cannot consider expunged convictions.

### How long does a DUI stay on my record in California?

A DUI stays on your criminal record permanently unless expunged. For purposes of charging prior offenses (which increases penalties), California uses a 10-year lookback period. Your DMV record shows the DUI for 10 years.

### Can a DUI be reduced to a wet reckless?

Yes. Wet reckless (VC 23103.5) is a common plea bargain for DUI cases, especially first offenses with borderline BAC levels or weak evidence. It carries lower fines, shorter DUI school, no mandatory license suspension, and looks better on your record.

## Facing DUI Charges in California?

A DUI arrest does not have to result in a conviction. The evidence against you may have weaknesses that an experienced DUI defense attorney can exploit. Contact us today for a free consultation to discuss your case and your options.

## Related California penal codes

- [Vehicle Code 23153 VC - DUI Causing Injury](https://www.thehfirm.com/penal-codes/vehicle-code-23153-vc-dui-causing-injury)
- [California Vehicle Code 23152(b) - Driving with BAC 0.08% or Higher: DUI Per Se Law](https://www.thehfirm.com/penal-codes/vehicle-code-23152-b-driving-with-bac-0-08-percent-or-higher)
- [Wet reckless (DUI plea reduction)](https://www.thehfirm.com/penal-codes/vc-23103-23103-5-wet-reckless-dui-plea-reduction)

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