The California DMV 10-day rule.

If you were arrested for DUI in California, you have ten calendar days to request a DMV hearing or your license is automatically suspended. Here is what that means, why it matters, and what the hearing actually is.

Where the rule comes from

California Vehicle Code §13558 authorizes the DMV to suspend the driving privilege of anyone who was arrested for driving with a BAC of 0.08% or more, or who refused to submit to chemical testing. The statute also grants the arrested driver the right to a hearing to challenge the suspension, but conditions that right on a timely request:

That 10-day language is interpreted as ten calendar days from the date the officer handed you the pink temporary license at the time of arrest. There is no extension, no good cause exception, and no judicial review of a missed deadline. The hearing right is forfeited.

What happens if you miss the deadline

If you do not request the hearing within ten days:

• Your license is automatically suspended exactly 30 days after the arrest date. The pink temporary license you received at arrest expires on that 30th day.
• The suspension period depends on your priors and what triggered the arrest. A first-offense BAC suspension runs 4 months. A first-offense refusal runs 1 year. A second-offense BAC within 10 years runs 1 year. A second refusal runs 2 years. Third refusal runs 3 years.
• You may apply for a restricted license after 30 days (most first offenses) by completing a DUI program and installing an ignition interlock device. Refusal cases have no restricted license option for the first 1 year.
• You lose all defenses you could have raised at the DMV hearing, including evidence that the chemical test was inaccurate, that the stop was unlawful, or that the officer failed to follow Title 17 protocols.

How to request the hearing

The hearing request is made to the DMV Driver Safety Office that serves the county where the arrest occurred. There are about a dozen offices statewide. Methods that count toward the 10-day deadline:

• Phone: calling the appropriate Driver Safety Office and asking to schedule an APS hearing. Get the name of the person you spoke with and the date and time of the call.
• Mail: a written request mailed to the office. The postmark date controls, not the date the office receives it. Use certified mail to preserve proof.
• In person: walking into the office and submitting a written request. The date of receipt controls.
• Through an attorney: any attorney can request the hearing on your behalf with a signed authorization. This is the cleanest method because the attorney also requests the discovery package at the same time, which is needed to defend the hearing.

The request should also include a request for a "stay" of the suspension pending the hearing, which keeps your driving privilege intact until the hearing decision is issued. A stay is granted automatically when the request is timely.

What the hearing actually is

An APS hearing is not a court proceeding. It is an administrative hearing conducted by a DMV hearing officer (typically not a lawyer, not a judge) inside a DMV Driver Safety Office. The hearing is recorded but not transcribed unless either party requests a transcript afterward.

The hearing officer plays two roles simultaneously: they are both the prosecutor presenting the DMV's case against you and the finder of fact deciding the outcome. This dual role has been challenged repeatedly but remains the current procedure. As of 2023, California Supreme Court precedent (California DUI Lawyers Association v. DMV) has begun to limit this practice, but full reform is incomplete.

Hearings are typically scheduled 30 to 90 days after the request is made. They can be conducted by telephone or in person at the driver's choice. Most attorneys recommend in-person hearings because they give the defense access to the actual police report, video evidence, and any chemical test maintenance records, which may not be available by phone.

The three issues at the hearing

The hearing officer can only consider three questions, set by statute:

1. Did the officer have reasonable cause to believe you were driving a vehicle while in violation of Vehicle Code §23152 or §23153?
2. Were you lawfully arrested?
3. Did you have a BAC of 0.08% or more (or did you refuse to submit to a chemical test, depending on the type of suspension being challenged)?

The DMV's burden of proof is "preponderance of the evidence," which is lower than the criminal standard. The DMV typically presents its case using only the officer's sworn report (the DS-367 form) and the chemical test result. The defense can present documents, expert witnesses, and cross-examine the arresting officer if subpoenaed.

Defenses at the APS hearing

Common defenses that can win an APS hearing:

• The DS-367 form is incomplete or inaccurate. The arresting officer's sworn report has required fields. Missing information, incorrect dates, or contradictions with other evidence can result in the suspension being set aside.
• The chemical test was unreliable. California Code of Regulations Title 17 sets strict requirements for breath machine calibration, blood draw protocols, and result reporting. Violations can result in the test result being excluded from evidence.
• The arrest was unlawful. If the officer lacked reasonable cause to stop you, the entire encounter can be voided. This requires evidence beyond just the officer's testimony: dash cam footage, body camera footage, witness statements.
• Rising BAC. Expert testimony from a forensic toxicologist that your BAC was below 0.08% at the time you were actually driving, even though the test 30-60 minutes later showed higher.
• Medical conditions. GERD, hiatal hernia, dietary ketosis, certain medications, and recent dental work can produce false positive breath readings.
• Refusal challenges. If the suspension is based on chemical test refusal, the DMV must prove you understood the consequences (the Trombetta admonishment) and willfully refused. Language barriers, medical conditions, and incomplete advisement all undermine refusal claims.

What an APS win means

If the hearing officer sets aside the suspension, your license remains valid through the criminal court process and beyond. A win at the DMV does not affect the criminal case directly, but the discovery, witness testimony, and evidence developed at the APS hearing often becomes powerful material for the criminal defense.

A win also preserves your driving record, which matters for insurance, employment that requires driving, and any future DUI sentencing (a clean prior record reduces priors).

If you have already passed the 10 days

If more than ten calendar days have passed since your arrest, you have likely lost the right to challenge the BAC suspension itself. But you still have options:

• The criminal case is independent. An acquittal or dismissal in criminal court can set aside the criminal court suspension (though not the DMV suspension).
• Restricted license eligibility may begin sooner with attorney intervention, particularly if you complete a DUI program early and install an ignition interlock device.
• Reissuance of the license after the suspension period requires SR-22 insurance, fee payment, and proof of program completion. An attorney can sometimes expedite this.