What Happens After an OUI Arrest in Massachusetts

By Attorney Joe Serpa | Georgetown University Law Center | 30 Years Massachusetts Criminal Defense

An OUI arrest in Massachusetts initiates a sequence of events that moves quickly and has consequences that extend well beyond the criminal case. Two entirely separate proceedings begin at the same time, one in the criminal court and one at the Registry of Motor Vehicles, and both must be managed from the moment of arrest. This post covers what happens at each stage and what the defense can do.

Before treating any charge as a foregone conclusion, it is worth knowing how a Massachusetts case can be dismissed and why a real dismissal beats a plea that is not a conviction.

At the Police Station: The Breathalyzer Decision

The first consequential decision after an OUI arrest is whether to take the breathalyzer at the station. Under the Massachusetts implied consent law, M.G.L. c. 90, § 24(1)(f)(1), declining the breathalyzer triggers an automatic RMV license suspension. For a driver 21 or older with no prior OUI, the refusal suspension is 180 days. It rises to three years with one prior offense, five years with two priors, and a lifetime loss with three or more. A driver under 21 who refuses loses the license for three years even on a first offense. Taking the breathalyzer and registering .08 or above suspends the license until the case is resolved, subject to a 30-day maximum under § 24(1)(f)(2).

Refusing the breathalyzer denies the prosecution its primary scientific evidence of BAC. The refusal itself cannot be used against the defendant at trial. Without a breathalyzer result, the Commonwealth must prove OUI through the officer’s driving observations, the field sobriety test results, and general observations of impairment. That is a harder evidentiary case to make. The tradeoff between the longer RMV suspension and the weaker prosecution case depends on the specific facts and should be evaluated with counsel immediately after arrest. See Should I Take the Breathalyzer in Massachusetts?.

The roadside portable breath test (PBT) administered before the station-house breathalyzer is inadmissible at trial in Massachusetts. The number it produces cannot be shown to a jury. It can only be used to establish probable cause for the arrest.

The Two Simultaneous Proceedings

The RMV administrative proceeding. The license suspension triggered at the police station is an administrative action by the RMV, independent of any court proceeding, and it takes effect immediately. Winning the criminal case does not automatically undo a refusal suspension. The statute instead allows a defendant who wins a not-guilty verdict or a dismissal of all charges to apply immediately to the trial court for an order restoring the license. A driver who wants to challenge the refusal suspension itself must request a hearing before the Registrar within 15 days of the suspension, which begins the night of the arrest. That hearing covers only three narrow questions, whether the officer had reasonable grounds to believe the driver was operating under the influence, whether the driver was placed under arrest, and whether the driver refused the test. Missing the 15-day window forfeits the administrative appeal. See Massachusetts OUI License Suspensions.

The criminal proceeding. The criminal case proceeds in the District Court or Boston Municipal Court with territorial jurisdiction over the location of the arrest. South Shore arrests, for example, are frequently arraigned in the Quincy District Court. The criminal case determines guilt or innocence and imposes the criminal penalties, fines, probation, incarceration, and a court-ordered license suspension. A not-guilty verdict or dismissal terminates the criminal case and allows the defendant to ask the court to order the RMV to lift the administrative refusal suspension.

Arraignment

At arraignment, which typically occurs at the court’s next session after arrest, usually the next business day, the defendant is formally charged and enters a plea of not guilty. A CORI entry is created at arraignment regardless of the eventual outcome. The judge sets bail conditions and may impose additional conditions of release. For first-offense OUI, bail is typically personal recognizance with a condition prohibiting the use of alcohol or controlled substances and sometimes requiring random testing.

For licensed professionals, many Massachusetts licensing boards impose self-reporting obligations, and some of those duties arise as soon as charges issue rather than at conviction. Board-specific rules should be checked before arraignment. For non-citizens, the arraignment CORI entry can affect pending immigration applications and visa renewals. Defense counsel should assess these downstream consequences before arraignment when possible. See Immigration Consequences of Massachusetts Criminal Charges.

Pretrial: Motions and Discovery

After arraignment, defense counsel files a discovery request for all materials the prosecution intends to use. That includes the officer’s written report, dash camera and body camera footage, the breathalyzer maintenance and calibration records for the specific Draeger Alcotest 9510 used in the arrest, the 15-minute observation log, and any other evidence. The breathalyzer records are particularly important. Following Commonwealth v. Ananias, the consolidated litigation that resulted in the presumptive exclusion of more than 27,000 breath test results statewide, these records must be audited in every case. See Why a Failed Breathalyzer Does Not Equal an OUI Conviction.

When the evidence supports it, defense counsel files a Motion to Suppress challenging the constitutionality of the traffic stop, the breathalyzer result, or both. Massachusetts law imposes real limits on traffic stops, exit orders, and pretext searches, and OUI stops are a frequent source of suppression litigation. A successful suppression motion can eliminate the prosecution’s primary evidence and result in dismissal before trial. See Illegal Searches and Seizures in Massachusetts.

How OUI Cases Resolve

Dismissal after a successful Motion to Suppress. When the traffic stop was unconstitutional or the breathalyzer result is suppressed, the Commonwealth frequently cannot proceed without that evidence and the case is dismissed.

The 24D alternative disposition. Most first-time offenders are eligible for the alternative disposition under M.G.L. c. 90, § 24D. The 24D involves probation for up to two years, a court-ordered license suspension of 45 to 90 days, and completion of a driver alcohol education program, in lieu of a committed sentence. An offender under 21 faces a 210-day suspension instead. The statute makes the disposition available to drivers who have never been convicted of OUI, and it gives a second-chance version, once in a lifetime, to a driver whose only prior offense is more than ten years old. A first-offense 24D is typically structured as a Continuance Without a Finding, which avoids a Massachusetts conviction. It still carries significant collateral consequences and counts as a prior offense for any future OUI. It should not be accepted without a full collateral consequences assessment for the specific defendant. Under Commonwealth v. Cahill, 442 Mass. 127 (2004), that second-chance driver is also treated as a first offender for the license suspension: 45 to 90 days, with immediate hardship eligibility.

A CWOF. A Continuance Without a Finding requires an admission to sufficient facts and is treated as a conviction for federal immigration purposes under 8 U.S.C. § 1101(a)(48)(A), for CDL purposes under federal regulations, and by most Massachusetts professional licensing boards. For many defendants, a CWOF’s practical consequences are identical to a conviction. See CWOF, Pretrial Probation, and Diversion in Massachusetts FAQs.

Not guilty at trial. When a motion to suppress is denied and a CWOF is not an appropriate resolution, the case goes to trial. Attorney Serpa maintains a perfect record of not-guilty verdicts in OUI jury trials. See How OUI Cases Are Won at Trial in Massachusetts and Massachusetts Criminal Defense Trial Results.

Hardship Licenses and Ignition Interlock

A driver who accepts the 24D disposition may apply to the Registrar for a hardship license immediately upon entering the program. The RMV issues first-offense hardship licenses for an identical 12-hour period each day, seven days a week, and the applicant must document the hardship, typically with an employer letter stating the work hours or comparable proof for education or medical need. A first offender convicted after trial rather than through the 24D program faces a one-year license loss under § 24(1)(c)(1).

Two limits matter here. First, no hardship or restricted license of any kind may issue while a chemical test refusal suspension is running, because § 24(1)(f)(1) bars restoration and hardship permits during that period. A driver serving a 180-day refusal suspension must resolve it before hardship relief is possible. Second, under Melanie’s Law, M.G.L. c. 90, § 24 1/2, a driver with two or more OUI convictions cannot receive a hardship license or a restored license unless a certified ignition interlock device is installed on every vehicle the driver owns, leases, or operates, and the device must remain in place for two years after full restoration. For the full suspension and reinstatement framework, see the Massachusetts OUI and DWI License FAQs.

OUI Consequences for Specific Populations

Licensed professionals. For physicians, nurses, attorneys, engineers, financial advisors, and other licensed professionals, an OUI conviction or CWOF is a reportable event to many Massachusetts licensing boards, and registered securities professionals can face firm and regulator disclosure questions. Healthcare professionals with DEA prescribing authority face additional federal consequences. The defense strategy for licensed professionals prioritizes a not-guilty verdict or pre-trial dismissal over a CWOF, because the CWOF’s licensing consequences are often identical to those of a conviction.

College and university students. For university students in the Boston area, an OUI conviction or CWOF triggers a university disciplinary proceeding that runs alongside the criminal case. Under the under-21 zero-tolerance statute, M.G.L. c. 90, § 24P, a driver under 21 who registers a BAC of .02 or greater faces an additional 180-day suspension, and a driver under 18 faces a full year, on top of any court-imposed penalty. An under-21 refusal brings the three-year suspension described above. The defense of student OUI cases focuses on suppression of breathalyzer and field sobriety evidence and, where a clerk-magistrate hearing is available because the case began with a citation rather than an arrest, pre-arraignment resolution that prevents any CORI entry. See A Criminal Uniform Traffic Citation and the Clerk-Magistrate Hearing.

CDL holders. CDL holders face a federal BAC threshold of .04 under 49 C.F.R. § 382.201 and a mandatory CDL disqualification of at least one year for a first OUI conviction under M.G.L. c. 90F, § 9, regardless of whether the vehicle driven was a commercial vehicle. The first-offense disqualification rises to three years if the offense occurred while transporting placarded hazardous materials. A CWOF is treated as a conviction for CDL purposes under federal regulations. A second OUI results in lifetime CDL disqualification. The defense of a CDL holder’s OUI case requires particular attention to every potential motion and trial argument because the stakes extend to career.

Non-citizens. A first-offense OUI conviction does not categorically qualify as a crime of moral turpitude or an aggravated felony under federal immigration law, but an OUI involving drug impairment can constitute a controlled substance offense with permanent immigration consequences. A CWOF is treated as a conviction for federal immigration purposes. Any proposed OUI disposition for a non-citizen must be reviewed by an immigration attorney before acceptance. See OUI Immigration Consequences in Massachusetts.

Key Takeaways

• An OUI arrest triggers two simultaneous proceedings, a criminal case in court and an administrative license suspension at the RMV. Both must be managed from day one.
• The breathalyzer decision at the station is consequential. Refusing eliminates the prosecution’s primary scientific evidence but triggers a longer RMV suspension, 180 days for a first offender 21 or older and three years for a driver under 21. See Should I Take the Breathalyzer in Massachusetts?.
• The roadside portable breath test (PBT) result is inadmissible at trial in Massachusetts.
• The RMV hearing on a breathalyzer refusal suspension must be requested within 15 days of the suspension, which takes effect the night of the arrest. Missing the window forfeits the administrative appeal.
• No hardship license is available while a refusal suspension is running. A 24D participant may apply for a 12-hour hardship license immediately upon entering the program.
• A first-offense 24D disposition is typically structured as a CWOF, which avoids a Massachusetts conviction, but it counts as a prior OUI offense for any future charge and carries collateral consequences for licensed professionals, non-citizens, and CDL holders.
• A CWOF is treated as a conviction for federal immigration purposes, for CDL purposes, and by most professional licensing boards.
• For licensed professionals, students, and non-citizens, the only fully safe outcome is a not-guilty verdict or pre-trial dismissal. See How OUI Cases Are Won at Trial in Massachusetts.

Serpa Law Office represents defendants in OUI cases across the Massachusetts District Courts and Boston Municipal Court. Attorney Joseph Serpa is a Georgetown Law graduate with thirty years of Massachusetts criminal defense experience and a perfect record of not-guilty verdicts in OUI jury trials. Contact Serpa Law Office at 617.936.0201 for a free consultation. The Boston office is at 20 Park Plaza #400A and the Quincy office is at 500 Victory Rd., Suite 400A. Available 24 hours a day.

Related Resources

• OUI Defense in Massachusetts, Main Practice Area Page
• Massachusetts OUI FAQs
• Massachusetts OUI License Suspensions
• Should I Take the Breathalyzer in Massachusetts?
• Why a Failed Breathalyzer Does Not Equal an OUI Conviction
• How OUI Cases Are Won at Trial in Massachusetts
• What to Do in the First 24 Hours After an Arrest in Massachusetts
• Arraignment in the Massachusetts Trial Court
• Illegal Searches and Seizures in Massachusetts
• CWOF, Pretrial Probation, and Diversion in Massachusetts FAQs
• Criminal Defense for Licensed Professionals in Massachusetts
• Immigration Consequences of Massachusetts Criminal Charges
• College and University Student Criminal Defense
• Massachusetts Criminal Defense Trial Results