Updated October 14, 2026
A second DUI is the same misdemeanor as the first with a different sentencing section attached to it. Everything the first offense carried is still there. What changes is that the minimums stop being theoretical: jail becomes a floor rather than a possibility, the alcohol program runs 18 months instead of three, the license action doubles, and the ignition interlock stops being optional. This guide covers what counts as a prior, what the second-offense numbers actually are, and the route most people use to keep driving while the case runs.
What counts as a prior
Vehicle Code section 23540 applies when the new offense happened within 10 years of a separate violation that ended in a conviction for DUI (section 23152), DUI causing injury (section 23153), or a wet reckless (section 23103 as described in section 23103.5). Four details decide more cases than people expect:
- The window runs from offense date to offense date, not from the old conviction date. An arrest nine years and eleven months after the earlier arrest is inside the window.
- A wet reckless counts. The reduced charge from a first case is a prior for sentencing the second time, which is the main thing the wet reckless guide warns about.
- An out-of-state conviction counts if the conduct would have been a DUI or a wet reckless here.
- An expunged conviction counts. A dismissal under Penal Code section 1203.4 helps with jobs and housing; it does not take the prior out of the count.
The DMV keeps its own count, and it is wider. For the administrative suspension, a prior includes an earlier administrative finding of 0.08 or a refusal on a separate occasion in the last 10 years, whether or not that earlier court case ended in a conviction.
The first 10 days: the DMV side doubles
The officer took your license and handed you the pink temporary one. You have 10 days from the arrest to request the DMV hearing that holds the suspension; the 10-day DMV deadline guide covers how. With a prior inside 10 years, the suspension on the table is one year instead of four months. A refusal with a prior is a two-year revocation, and refusal cases are covered in the refusal guide.
The one-year suspension does not have to run its full length. Once the court case ends in a conviction and you are driving on an interlock-restricted license, the DMV's administrative suspension terminates and the court-side restriction takes over. That is the route described below.
What a second-offense conviction carries
Vehicle Code sections 23540 and 23542 set the terms. A second offense with no injury typically includes:
- Jail. The statute says 90 days to one year. When the court grants probation, which is how most second offenses resolve, the minimum is 10 days, or 96 hours served as two separate 48-hour blocks. Depending on the court and the facts, short terms are often served through alternatives such as electronic monitoring or work release rather than a jail bed.
- Fines with the same $390 to $1,000 base as a first offense, multiplied several times by penalty assessments. See what a DUI costs.
- An 18-month DUI program, or a 30-month program if the court orders it. No credit for anything completed before the new arrest.
- Probation of three to five years with the standard terms: no driving with any measurable alcohol, no refusing a test, no new offenses.
- A two-year license suspension through the court under Vehicle Code section 13352, running at the same time as the DMV's one year rather than on top of it.
- An ignition interlock device for a mandatory 12 months under section 23575.3. The device fee is scaled to income: people at or below the federal poverty line pay 10 percent of the provider's standard cost, and the share rises from there.
- The Watson advisory again, which was already on your record from the first case.
The court can also refuse to allow a restricted license at all if it finds, on the whole picture, that you would be a traffic safety risk during the suspension. That finding is argued, not automatic.
Keeping a car on the road: the interlock route
For an alcohol-related second offense, the two-year suspension does not require you to sit out any part of it before driving again. Under section 13352 you can apply to the DMV for a restricted license as soon as you have:
- Proof of enrollment in the 18-month program, or the 30-month program where the court ordered it.
- An interlock installed by a certified provider, with the Verification of Installation form filed.
- An SR-22 insurance certificate on file.
- The reissue and restriction fees paid.
The restriction lasts the length of the interlock term. The device has to be serviced every 60 days, and the installer reports any attempt to remove or bypass it. If the conviction was for drugs only, the rules are different: 12 months of the suspension have to be completed first.
Two practical notes. If you do not own or have access to a vehicle, you can certify that to the DMV within 30 days of its notice and the interlock requirement waits until you do. And there is no certified interlock for motorcycles, so a motorcycle cannot be ridden at all during the restriction period.
What makes a second offense worse
- A result of 0.15 or above, or 0.20 and above, which pushes toward the 30-month program and narrows what prosecutors will discuss.
- Refusing the chemical test, which lengthens the DMV action to two years.
- A crash with an injury, which can be charged as a felony under section 23153. See DUI with an injury.
- Still being on probation from the first case. A new DUI is also a probation violation, and the old case reopens with its own sentence available.
- A passenger under 14, which adds its own jail term under section 23572.
- Driving on a license that was already suspended for the first DUI, a separate misdemeanor under section 14601.2 with its own jail minimum.
What can change the outcome
Every question from a first case is still live: whether the stop was lawful, whether the field tests were given and scored properly, whether the breath machine was calibrated and the observation period kept, whether a blood sample was drawn and stored correctly, and whether the number at the station reflects the number at the wheel.
A second case adds one more: the prior itself. A prior that falls outside 10 years by offense date, a prior entered without a lawyer or without the required advisements, or an out-of-state conviction that does not match a California offense can be challenged by motion. If the prior falls, the case is sentenced as a first offense. A reduction to a wet reckless is harder to get the second time, and it does not undo the DMV's one-year action, which runs on its own evidence.
If the arrest was in the last 10 days, the DMV request comes first. A consultation with a Long Beach DUI defense attorney covers the hearing, the prior, and the police report in one conversation. Long Beach cases are heard at the courthouse on Magnolia Avenue; the courthouses page lists it and the courts for the surrounding cities.
This page is general information for Long Beach residents, not legal advice about any specific situation. Agency fees and procedures change; confirm details with the agency before you rely on them.
