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Arrested for DUI in California? Here Is Exactly What Happens Next — and What You Can Do About It.

Understanding the California DUI Process — From Arrest Through Trial — Is the First Step in Building a Defense That Protects Your License, Your Record, and Your Future.

California criminal defense attorney David Chesley has guided clients through every stage of the California DUI process — from the night of arrest through the DMV hearing, arraignment, pretrial motions, and trial — defending every category of DUI charge in criminal courts across every county in California. Most people arrested for DUI have never been through the process. They do not know that two separate cases begin running the moment of arrest. They do not know about the 10-day deadline that permanently waives a critical right if missed. They do not know which early decisions determine whether the strongest defenses remain available. This page explains exactly what happens at every stage and what an experienced DUI defense attorney does at each one. Build your defense now.

_{Reviewed by David S. Chesley, Esq., Managing Attorney — Law Offices of David S. Chesley, Inc.}

JUST ARRESTED FOR DUI? HERE'S WHAT TO DO IN THE NEXT 10 DAYS

• Do not make any statements to law enforcement, the DMV, or anyone connected to the case without experienced defense counsel present — what you say about how much you drank, when you drank, and what you were doing before driving is the prosecution's most important evidence and is most damaging when made before counsel is involved
• Request a DMV hearing within 10 days — a DUI arrest triggers an automatic administrative license suspension that is completely separate from the criminal case; missing the 10-calendar-day deadline permanently waives the right to contest that suspension
• Write down everything you remember — the location of the stop, the officer's stated reason, what you consumed and when, the testing timeline, and anything unusual about the process; this account is most accurate right now
• Call an experienced DUI defense attorney immediately — dashcam and body camera footage is overwritten in 30 to 90 days; rising BAC evidence fades quickly; and the 10-day DMV deadline is already running

Call now for a free, confidential consultation — available 24/7.
📞 (800) 755-5174

THE TWO CASES MOST PEOPLE DON'T KNOW ABOUT

A DUI arrest in California triggers two entirely separate cases at once, and both need defending starting on day one.

1. The DMV Administrative Per Se Case. This civil administrative proceeding starts automatically, with its own standards, hearing, and consequences. Winning the criminal case doesn't automatically save the license, and losing the DMV case doesn't automatically decide the criminal case.

2. The Criminal Case. This is what determines conviction, jail, and most collateral consequences, moving through arraignment, pretrial motions, and, if necessary, trial.

Why both need defending together. The DMV hearing isn't just about the license — it's also a genuinely powerful criminal defense tool. The arresting officer testifies under oath, often months ahead of the criminal trial, and gets cross-examined on the stop, the testing, and the basis for the arrest. Inconsistencies between that testimony, the police report, and any video evidence become the foundation for suppression motions and trial strategy. A well-run DMV hearing is essentially a sworn deposition of the arresting officer, obtained months early — one of the most valuable, most overlooked tools in DUI defense.

Call (800) 755-5174 to protect both tracks immediately.

CALIFORNIA DUI LAWS — WHAT YOU ARE ACTUALLY CHARGED WITH

Almost every DUI case includes both:

• VC § 23152(a) — driving under the influence; impairment based on the totality of the evidence
• VC § 23152(b) — driving with a BAC of 0.08% or higher at the time of driving — not at the time of the test; this is the legal foundation of the rising blood alcohol defense

Charge Spectrum:

THE CALIFORNIA DUI PROCESS — STAGE BY STAGE

Stage One: The Arrest

Traffic stop (or accident or checkpoint), then investigation, field sobriety tests, PAS device, arrest, and finally the evidentiary breath or blood test.

The defense at this stage focuses on the legality of the stop, whether field sobriety tests were properly administered, whether probable cause for arrest actually existed, and Title 17 compliance on the chemical test.

What actually gets analyzed at this stage: the Fourth Amendment requires reasonable suspicion for every traffic stop, and if the officer didn't have it — no actual violation, a fabricated reason, a pretextual stop — everything discovered afterward gets suppressed under the exclusionary rule. Dashcam and body camera footage sits on a 30-to-90-day overwrite schedule from the moment of arrest, which is why a formal preservation demand needs to go out immediately upon retention. Field sobriety tests get checked against NHTSA standards, whether the specific clues scored actually indicate impairment, and whether an alternative explanation — a medical condition, nervousness, road conditions, footwear — better accounts for the performance. The chemical test itself gets checked for every available Title 17 violation: observation period, device calibration, operator certification, and collection and storage procedures for blood.

Stage Two: The DMV Hearing — the 10-Day Deadline

The request has to go in within 10 calendar days of arrest. The hearing decides whether the officer had reasonable cause, whether the arrest was lawful, and whether the BAC was 0.08% or higher at the time of driving — or, in refusal cases, whether the refusal advisements were properly given.

Winning sets aside the administrative suspension entirely. Losing typically produces a 4-month suspension for a first offense with a chemical test, or a full year for refusal. Either way, the hearing generates sworn officer testimony that's genuinely valuable for the criminal case.

The full value of the hearing goes beyond most people's expectations. Most defendants, and plenty of attorneys, treat the DMV hearing as a formality about the license and nothing more — missing its most important function. The officer testifies under oath here before the criminal case even reaches pretrial motions, often before they've had a chance to refine their account for criminal court. Cross-examination at this hearing surfaces inconsistencies between the officer's account, the police report, any video evidence, and the Title 17 compliance requirements — inconsistencies that become the foundation of the suppression motion and the eventual trial cross-examination. A DMV hearing lost on the merits but that extracts damaging admissions from the officer can actually be more valuable to the criminal case than one that's won outright.

Stage Three: Arraignment

The charges get formally read, a not-guilty plea gets entered, bail gets addressed, and the next date gets set. Formal discovery requests and evidence-preservation demands go out immediately.

What actually happens at arraignment: this is where formal discovery in the criminal case begins. A comprehensive discovery request gets filed at or before this hearing, demanding the police report, chemical test records, dashcam and body camera footage, calibration and maintenance records, operator certification, and everything else in the prosecution's file. The 30-to-90-day retention window on the footage is already closing, so the formal preservation demand filed here is what legally protects it. Arraignment is often also the first real look at the prosecution's posture — what's been charged, at what level, what the initial plea position looks like — which shapes the pretrial strategy from that first appearance forward.

Stage Four: Pretrial Proceedings and Motions

This is usually the most important phase of the whole case. Discovery gets reviewed in full, and the key motions include:

• PC § 1538.5 suppression — unlawful stop; if granted, prosecution typically cannot proceed and the charge is dismissed
• Miranda suppression of statements obtained without proper warnings
• Title 17, mouth alcohol, and other evidentiary challenges to the chemical test results
• Plea negotiations — wet reckless VC § 23103.5, dry reckless VC § 23103, exhibition of speed, or dismissal

The pretrial phase in detail: this is where the most important defense work happens, and where the case's outcome most often gets decided. Every piece of discovery gets reviewed against every available defense framework — the police report against the dashcam footage for suppression-supporting inconsistencies, the device's calibration records for a Title 17 challenge, the testing timeline for an observation period violation, medical history for a possible medical condition defense, and the drinking pattern for a rising blood alcohol defense. Where the evidence supports a PC § 1538.5 suppression motion, it gets filed, since a successful one eliminates the prosecution's evidence and typically produces outright dismissal — the single most powerful pretrial motion in DUI defense.

Plea negotiations happen during this phase too, and how strong the available defenses are determines the negotiating position. The most important favorable resolutions short of outright dismissal:

Wet reckless under VC § 23103.5 — the most important DUI reduction available. Shorter probation, no mandatory DUI school, typically no mandatory license suspension, no mandatory ignition interlock, and a much smaller insurance hit. It still counts as a prior for the 10-year lookback, but it skips most of the full DUI conviction consequences.

Dry reckless under VC § 23103 — reckless driving without the alcohol designation. No DUI-specific consequences at all, and it doesn't count as a prior DUI for the 10-year lookback, making it even more protective than a wet reckless for anyone worried about future escalation.

Exhibition of speed under VC § 23109 — a traffic offense with minimal DUI-related consequences, available in limited circumstances where the prosecution's evidence is especially weak.

Dismissal happens where the suppression motion is granted, where the evidence simply isn't enough to prove the charge beyond a reasonable doubt, or where the prosecution decides the available defenses make conviction unlikely.

Stage Five: Preliminary Hearing — Felony Cases Only

The prosecution has to establish probable cause here. Cross-examination at this stage creates a valuable record for trial, locking in witness testimony under oath early and surfacing inconsistencies that get developed further at trial.

Stage Six: Trial

A jury trial, or a bench trial if the jury is waived. Success comes down to rigorous cross-examination of the officer, pharmacokinetic and toxicology expert testimony, and presenting every available technical defense together.

The trial process in detail: California DUI trials are typically before a jury of 12, though the jury can be waived for a bench trial. Jury selection screens for bias about DUI, alcohol, and law enforcement, seating the most favorable jury available on the specific facts. The prosecution goes first — the arresting officer testifies about the stop, the investigation, the field sobriety tests, and the basis for the arrest, the chemical test evidence comes in, and any other witnesses testify. Every prosecution witness gets cross-examined on the inconsistencies identified through the DMV hearing testimony, the police report, and the video evidence. The defense case includes the pharmacokinetic expert on rising blood alcohol where applicable, the forensic toxicologist on Title 17 or mouth alcohol where applicable, and any other supporting testimony. Cross-examining the arresting officer, built from months of pretrial preparation including the DMV hearing testimony, is usually the single most important element of the trial defense. Closing arguments summarize the evidence and argue specifically why the prosecution hasn't met its burden on the elements actually being challenged.

COLLATERAL CONSEQUENCES BEYOND THE SENTENCE

• Mandatory license suspension + ignition interlock — up to 3 years depending on the offense level
• SR-22 insurance — dramatically higher premiums of $1,500 to $3,000 annually for 3 years
• Professional license reporting obligations — nurses, attorneys, physicians, teachers, contractors, and other licensed professionals must report DUI convictions to their licensing boards
• CDL disqualification — minimum 1 year for a first offense; lifetime for a second
• Immigration consequences — a DUI conviction may constitute a crime of moral turpitude under 8 U.S.C. § 1182(a)(2)(A)(i)(I) triggering inadmissibility and deportability; in felony DUI circumstances with a sentence of one year or more, the conviction may approach aggravated felony status under 8 U.S.C. § 1101(a)(43)(F); immigration analysis must be conducted before any plea
• Total first-offense financial impact frequently exceeds $10,000 when fines, DUI school, ignition interlock, and SR-22 insurance increases are combined

KEY DEFENSES PURSUED AT EVERY STAGE

• Illegal traffic stop → full suppression (PC § 1538.5) — if the stop lacked reasonable suspicion, all evidence is suppressed and the charge is typically dismissed
• Rising blood alcohol — driving-time BAC below 0.08% established through pharmacokinetic expert and two-test differential
• Title 17 violations — observation period, calibration, operator certification, blood antiseptic, storage, chain of custody
• Mouth alcohol — mouthwash, GERD, burping, dental work; two-test differential is frequently the most important objective evidence
• Medical conditions — diabetes, GERD, ketosis, neurological issues; mimicking impairment or producing false test readings
• Independent accident causation — in DUI-with-accident cases; accident does not prove DUI and DUI does not prove the accident was the defendant's fault
• All standard constitutional and evidentiary challenges — Miranda violations, unlawful searches, identification challenges, chain of custody

DEEPER DIVE PAGES

For detailed analysis of every specific defense, see:

• Illegal Traffic Stop / Was the Stop Legal? — Fourth Amendment, PC § 1538.5, fruit of the poisonous tree
• Rising Blood Alcohol Defense — pharmacokinetic analysis, two-test differential, drinking after driving
• Title 17 Violations — observation period, calibration, operator certification, blood procedures, chain of custody
• Mouth Alcohol Defense — mouthwash, GERD, burping, dental work, two-test differential
• Medical Conditions as a Defense to DUI — diabetes, GERD, ketosis, neurological conditions
• DUI with Accident Defense — post-accident BAC, independent accident cause, trauma mimicking impairment
• Misdemeanor vs. Felony DUI Overview — charge spectrum, prior record, Watson murder
• Commercial Vehicle / Large Truck DUI — 0.04% threshold, GVWR analysis, FMCSA consequences
• DUI in Construction or School Zones — zone designation, signage, worker presence challenges

GUIDANCE FROM ARREST THROUGH RESOLUTION, ONE ATTORNEY THROUGHOUT

Every DUI case gets David Chesley's direct attention from the night of arrest through final resolution — immediate DMV hearing requests, rapid evidence-preservation demands, full discovery analysis, pretrial motions, coordinated plea negotiations, and trial if necessary. Coverage spans every California county, available around the clock. No case gets handed to a junior associate.

What happens once representation begins:

Right away: the DMV hearing request gets filed, formal preservation demands for dashcam and body camera footage go out, the drinking pattern gets documented from the defendant's own account, the full circumstances of the stop and testing get documented, and immigration consequences get analyzed for non-U.S. citizen defendants.

Through discovery: every piece of evidence — the police report, chemical test records, video footage, calibration records, operator certifications — gets obtained and analyzed against every available defense framework at once.

At the pretrial phase: the PC § 1538.5 motion gets filed where the stop was unlawful, a Miranda motion gets filed where statements were improperly obtained, the Title 17 challenge gets built from the calibration and testing records, the rising blood alcohol defense gets developed through the pharmacokinetic expert, mouth alcohol and medical condition defenses get developed where applicable, and plea negotiations happen from maximum available leverage.

At trial, if it comes to that: the arresting officer gets cross-examined on inconsistencies identified through months of pretrial preparation, expert witnesses get presented, and every available defense gets presented together.

Free, confidential case review — available 24/7, no obligation.
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KNOW YOUR RIGHTS AT EVERY STAGE OF THE PROCESS

Most people arrested for DUI assume the test result is the case. Common resolutions across every DUI category:

• First-offense DUI dismissed through traffic stop suppression — dashcam footage established the officer followed the vehicle for six blocks without observing any traffic violation; the stop was found to lack reasonable suspicion; all evidence got suppressed; the charge was dismissed
• First-offense DUI reduced to wet reckless — a rising BAC expert calculated a driving-time BAC around 0.06% rising to a tested 0.09%; the prosecution agreed to a VC § 23103.5 reduction; mandatory DUI school, mandatory IID, and administrative license suspension were all avoided
• Second-offense DUI acquitted through a Title 17 observation period violation — timestamps established 11 minutes and 30 seconds rather than the required 15; the breath test got excluded; the impairment charge couldn't be proven on officer observations alone; acquittal followed
• DUI reduced to dry reckless through the mouthwash mouth alcohol defense — a first test of 0.10% and a second of 0.07% produced a two-test differential consistent with a dissipating contaminating source; the per se charge was challenged and resolved below even wet reckless level, avoiding the prior DUI lookback consequence
• Fourth-offense felony DUI reduced to misdemeanor — prior conviction record analysis found one predicate prior fell outside the 10-year lookback window based on the current offense date; the felony predicate wasn't established; the charge dropped from felony to misdemeanor, eliminating state prison exposure
• DUI causing injury reduced to standard DUI — an accident reconstruction expert established a road surface defect as an independent contributing cause; the VC § 23153 causation element wasn't established beyond reasonable doubt; the injury charge dropped to a standard VC § 23152 misdemeanor, eliminating the strike consequence
• DMV hearing won, license preserved — the officer testified about swerving between lanes, but dashcam footage established the vehicle maintained its lane consistently throughout the described period; the officer's testimony was found not credible; the administrative suspension was set aside and the license preserved throughout the criminal proceedings
• Immigration-safe resolution for a non-U.S. citizen — rising BAC combined with a Title 17 observation period violation, both pursued together; the charge was dismissed without any plea, avoiding both the moral turpitude consequence under 8 U.S.C. § 1182(a)(2)(A)(i)(I) and the aggravated felony consequence under 8 U.S.C. § 1101(a)(43)(F), and the defendant remained in the United States

WHY CLIENTS NAVIGATING THIS PROCESS CALL THIS OFFICE

Direct, personal attention — statewide, 24/7
David Chesley personally handles every DUI case in criminal courts across all of California — Los Angeles, San Diego, Orange County, San Francisco, Sacramento, Fresno, San Jose, Riverside, San Bernardino, Ventura, and every other jurisdiction statewide. Available 24 hours a day, 7 days a week — because the 10-day DMV deadline and the dashcam footage overwrite window are running right now.

Straight talk, always.
DUI cases range from unlawful stops where the whole case should be suppressed, to strong technical defenses that should reduce the charge, to tougher cases where the real work is minimizing consequences and protecting collateral interests. You deserve an honest read on which one applies here — no false promises, no sugarcoating.

Both cases handled at once.
David Chesley handles the criminal case and the DMV proceeding together, using the DMV hearing strategically to build the criminal defense while protecting the license. Most defendants don't realize both cases need handling simultaneously, or that the DMV hearing is a genuinely powerful criminal defense tool — both get used together to get the best result on each.

Flexible payment plans are available, because cost shouldn't decide whether someone facing a DUI charge gets experienced representation.

FREQUENTLY ASKED QUESTIONS

What's the first thing to do after a DUI arrest?
Call an experienced DUI defense attorney immediately, and avoid making any statements before counsel is retained. Two clocks start running the moment of arrest: the 10-day DMV hearing deadline, and the 30-to-90-day overwrite schedule on dashcam footage that may be the most important evidence in the case. Both need addressing right away.

What happens if the 10-day DMV deadline gets missed?
The right to contest the administrative suspension is permanently waived, and the suspension becomes automatic regardless of how strong the underlying criminal defense turns out to be. The DMV hearing request gets filed immediately upon retention to avoid exactly this.

What's a wet reckless, and when is it available?
A wet reckless under VC § 23103.5 is the most common favorable DUI reduction — shorter probation, no mandatory DUI school, typically no mandatory license suspension, no mandatory IID, and a smaller insurance hit. It still counts as a prior for the 10-year lookback, but without the full DUI conviction consequences. It's most available where the technical defenses create genuine reasonable doubt, where the BAC was close to the limit, or where the prosecution's evidence has specific weaknesses.

Can the chemical test be refused?
Yes — but refusal triggers a mandatory one-year license suspension for a first offense, longer for repeats, and the refusal itself becomes admissible in the criminal case as consciousness-of-guilt evidence. Field sobriety tests and the pre-arrest PAS device are voluntary for most drivers 21 and older who aren't on DUI probation. Only the evidentiary chemical test after a lawful arrest is mandatory under the implied consent law.

What are the immigration consequences of a DUI for non-U.S. citizens?
A conviction can qualify as a crime of moral turpitude under 8 U.S.C. § 1182(a)(2)(A)(i)(I), triggering inadmissibility and deportability. In felony DUI cases with a sentence of a year or more, it can approach aggravated felony status under 8 U.S.C. § 1101(a)(43)(F), triggering mandatory deportation with almost no relief. This analysis needs to happen before any plea in every case involving a non-U.S. citizen defendant.

Are payment plans available?
Yes — the Law Offices of David Chesley offers flexible payment plans, because cost shouldn't decide whether someone facing a DUI charge gets experienced representation. These options get discussed during the free consultation.

Still have questions? We're available 24/7 for a free, no-obligation consultation. 📞 (800) 755-5174

GET GUIDANCE NOW — FREE CONSULTATION, AVAILABLE 24/7

The California DUI process starts moving the moment of arrest, and the most important defense opportunities are also the most time-sensitive. The 10-day DMV hearing deadline is the only window to preserve both the right to contest the license suspension and the chance to lock in the officer's sworn testimony months before trial. Dashcam footage typically gets overwritten within 30 to 90 days unless a preservation demand goes out fast. The specific drinking pattern loses precision quickly too, and that precision is what a pharmacokinetic expert needs for a defensible driving-time BAC estimate. For non-U.S. citizen defendants, the immigration analysis under 8 U.S.C. §§ 1182(a)(2)(A)(i)(I) and 1101(a)(43)(F) carries the same urgency, since dismissal without a plea is the only outcome that fully removes that uncertainty.

Don't assume the test result is the entire case. Don't miss the 10-day DMV deadline. Don't let dashcam footage get overwritten before a suppression motion can be built on it. And don't wait to make the call. If you've been arrested for DUI in California, at any charge level from a first offense through Watson murder, reach out now.

The Law Offices of David Chesley offer a free, confidential consultation available 24 hours a day, 7 days a week. No judgment. No pressure. Just clear, honest answers about the specific charge you face, the DMV proceeding that is already running, every defense available, and what can be done right now.

Flexible payment plans available — because cost should never be the reason someone facing a DUI charge goes without the experienced defense this case demands.

David Chesley handles every stage of DUI defense in criminal courts across all of California — Los Angeles County, Orange County, San Diego County, Riverside County, San Bernardino County, Ventura County, Santa Barbara County, Kern County, Fresno County, Sacramento County, Alameda County, Santa Clara County, San Francisco County, Contra Costa County, San Joaquin County, Stanislaus County, Monterey County, and every other jurisdiction statewide.

Se habla español.

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"Most people arrested for DUI in California do not realize that two separate cases begin the moment of arrest — the criminal case and the DMV proceeding — or that the 10-day deadline to request the DMV hearing is already running, or that the dashcam footage that could win the case is being overwritten while they wait. My commitment is filing the DMV request immediately, issuing evidence-preservation demands before the retention windows close, documenting the drinking-pattern evidence while it is still accurate, and developing every available defense — suppression, rising BAC, Title 17, mouth alcohol, medical conditions — simultaneously from the first day."
— David Chesley, California Criminal Defense Attorney