Maine OUI Laws — 29-A 2411, Aggravated OUI & 150-Day Suspension

Maine OUI Laws Explained

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Maine charges drunk and drugged driving as Operating Under the Influence (OUI) under 29-A M.R.S. § 2411 — a terminology unique to Maine and a small handful of other New England states. An OUI triggers two parallel processes: a criminal case in the district court and an administrative action at Maine BMV. Both move quickly, both have separate timelines, and both must be answered separately. First-offense OUI in Maine carries a 48-hour mandatory minimum jail sentence, a $500 fine plus court costs, and a 150-day license suspension — among the more severe first-offense profiles in the country.

The legal thresholds

Maine's per-se BAC limits:

  • Adults 21 and over: 0.08% BAC.
  • Drivers under 21: 0.00% BAC — absolute zero-tolerance.
  • Commercial drivers (CDL): 0.04% BAC.
  • Aggravated OUI: 0.15% BAC or higher, charged as a separate enhancement.

Maine also charges OUI on impairment evidence below the 0.08% threshold under the impairment subsection of 2411 — a charge that doesn't depend on a specific BAC reading. Drug-impaired driving (including legal prescriptions used incorrectly) is also charged as OUI.

The 150-day administrative suspension

After an OUI arrest where the BAC was 0.08% or higher, Maine BMV imposes an administrative license suspension separate from the criminal case:

  • 150-day suspension for an OUI based on a chemical-test failure with no prior offense.
  • 275-day suspension for a first chemical-test refusal.
  • Longer for repeat offenders or aggravating circumstances.

The administrative suspension runs from the conviction date or the refusal date and applies even if the criminal charge is later reduced or dismissed. Drivers can request an administrative hearing within a short window after receiving the suspension notice.

First-offense penalties (criminal)

A first-offense OUI conviction in Maine typically produces:

  • 48-hour mandatory minimum jail time — cannot be suspended on a first conviction.
  • $500 fine plus court costs and surcharges.
  • 150-day license suspension from the criminal court.
  • Mandatory completion of a state-approved DEEP (Driver Education and Evaluation Program) substance assessment and any recommended follow-up treatment.
  • Possible ignition interlock device requirement for hardship driving privileges.
  • SR-22 financial-responsibility filing for at least 3 years — see Maine car insurance.
  • Probation in most counties.

Aggravated OUI

Maine's aggravated OUI charge applies when:

  • The driver's BAC is 0.15% or higher.
  • The driver was traveling 30+ mph over the posted limit.
  • The driver was attempting to elude an officer.
  • A passenger under age 21 was in the vehicle.

Aggravated OUI brings longer mandatory jail time, higher fines, and longer license suspension. The aggravated factor applies as an enhancement to the underlying OUI charge rather than as a separate offense.

Repeat offenses

Maine's OUI lookback period is 10 years. A second OUI within 10 years brings a minimum 7-day jail sentence, $700 fine, and 3-year license suspension. A third within 10 years is a Class C felony with a minimum 30-day jail sentence, $1,100 fine, and 6-year license suspension. A fourth within 10 years is a Class B felony with even longer mandatory time. Each step also extends the SR-22 and ignition interlock period.

Implied consent and chemical-test refusal

Maine's implied consent law means that operating a motor vehicle on Maine roads implies consent to a chemical test (breath, blood, or urine) when an officer has reasonable cause to believe the driver is impaired. Refusing a test triggers an automatic 275-day administrative suspension for a first refusal, separate from any criminal penalty. Refusal evidence is also admissible against the driver at the criminal trial.

Ignition interlock devices

Maine allows OUI offenders to apply for a hardship work permit with an ignition interlock device (IID) installed on their primary vehicle. The IID prevents the vehicle from starting if the driver's breath registers alcohol, and it logs each test for BMV review. The IID is installed at the driver's expense and must remain in place for the period set by BMV or the sentencing court. Failed tests, missed calibrations, and tampering attempts are reported electronically and can extend the IID period.

Drug-impaired driving

Maine's OUI statute applies to impairment by alcohol, illegal drugs, prescription medication, and over-the-counter drugs that affect driving ability. Cannabis-impaired driving is treated under the same statute — Maine has no separate per-se THC limit, but officers may arrest based on observed impairment and confirm through a Drug Recognition Expert evaluation.

Official sources

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