You just found out what you’re charged with. Maybe you’ve been googling it for the last hour, trying to make sense of words like “felony” and “mandatory minimum” and “OUI manslaughter.” Maybe a family member sent you here because they’re trying to understand it too.
Whatever brought you to this page, these motor vehicle homicide charges under Massachusetts law include four distinct offenses that can follow a fatal car crash — and the difference between them is not just a legal technicality. It can be the difference between probation and five years in state prison with no chance of parole. Here is what each one means.
The Four Charges at a Glance
Massachusetts does not have a single “vehicular homicide” statute. The charges come from two separate statutes: M.G.L. c. 90, § 24G covers motor vehicle homicide, with three different levels depending on the facts. M.G.L. c. 265, § 13 1/2 covers OUI manslaughter (sometimes called Melanie’s Law manslaughter), which is a separate and more serious charge reserved for the most aggravated cases.
§ 24G(a) – Felony Motor Vehicle Homicide While OUI
- What it requires: The prosecution must prove that the defendant was operating a motor vehicle while under the influence of alcohol or drugs, operated the vehicle recklessly or negligently so as to endanger lives, and caused the death of another person.
- Felony or misdemeanor: Felony.
- Penalties: Imprisonment in state prison for 2.5 to 15 years, or in a house of correction for 1 to 2.5 years. There is a mandatory minimum of one year that cannot be suspended or reduced below that threshold. A fine of up to $5,000 may also be imposed.
- License consequences: 15-year license revocation upon conviction. If the defendant has a prior OUI, the revocation is for life.
- Who gets charged here: A driver who was OUI and whose operation was reckless or negligent (beyond the mere fact of impairment), and that combination caused a death.
§ 24G(b) – Misdemeanor Motor Vehicle Homicide
- What it requires: The prosecution must prove that the defendant operated a motor vehicle recklessly or negligently so as to endanger the lives of the public, and caused the death of another person. Unlike § 24G(a), this subsection does not require proof of both OUI and negligent/reckless operation together. Prosecutors may proceed under § 24G(b) based on negligent operation causing death, or in some circumstances based primarily on OUI causing death.
- Felony or misdemeanor: Misdemeanor.
- Penalties: Imprisonment in jail or house of correction for a minimum of 30 days and a maximum of 2.5 years. A fine of $300 to $3,000 may be imposed. Probation is possible.
- License consequences: Up to 15-year license revocation.
- Who gets charged here: A sober driver whose operation was criminally negligent or reckless and caused a death. This is also the charge sometimes brought when a driver had alcohol in their system, but the BAC alone (without accompanying reckless or negligent operation) is the primary evidence.
§ 24G(c) – Felony Reckless Motor Vehicle Homicide (No OUI Required)
- What it requires: The prosecution must prove the defendant operated a motor vehicle recklessly (a higher standard than negligence) in a manner that endangered lives, and caused a death. No OUI is required, but recklessness must be established.
- Felony or misdemeanor: Felony.
- Penalties: Up to 5 years in state prison.
- License consequences: Up to 15-year revocation.
- Who gets charged here: A sober driver whose operation was truly reckless (not just careless) and caused a death. Prosecutors typically choose this charge over § 24G(b) when the conduct was more extreme, such as racing, extreme speeding, or other conduct that goes well beyond ordinary negligence.
Chapter 265, § 13 1/2 – OUI Manslaughter (Melanie’s Law)
- What it requires: The prosecution must prove (1) the defendant was operating a motor vehicle while under the influence of alcohol or drugs in violation of G.L. c. 90, § 24(1)(a); and (2) while doing so, acted wantonly and recklessly, causing the death of another person. This requires proof of both OUI and involuntary manslaughter.
- Felony or misdemeanor: Felony.
- Penalties: A mandatory minimum of 5 years in state prison, up to a maximum of 20 years. A fine of up to $25,000 may also be imposed. The statute prohibits probation, parole, furlough, and good-time credit until the full 5-year mandatory minimum has been served.
- License consequences: At least a 15-year suspension, up to lifetime revocation.
- Who gets charged here: A driver who was OUI and whose conduct rose to the level of wanton and reckless behavior – a higher standard than the negligence required for § 24G(a). Prosecutors typically bring this charge in the most serious cases, where aggravating factors beyond mere impairment are present.
How Prosecutors Choose the Charge
The charging decision comes down to two key variables: whether the driver was impaired, and how serious the driving conduct was.
If there is no OUI, the case stays within § 24G. The difference between the misdemeanor (§ 24G(b)) and the felony reckless version (§ 24G(c)) turns on whether the driving rose to recklessness or was negligence.
If there is OUI, prosecutors look at whether the conduct also meets the standard for involuntary manslaughter. If they believe they can prove wanton and reckless behavior in addition to the OUI, they may charge § 13 1/2 rather than (or in addition to) § 24G(a). The § 13 1/2 charge is far more serious and carries a mandatory minimum sentence that a judge cannot waive.
In serious cases, prosecutors may file multiple homicide-related charges in the alternative and allow a jury to determine which theory, if any, is proven.
The Penalty Summary
Charge | Felony / Misdemeanor | Max Sentence | Mandatory Min | License |
§ 24G(a) OUI Felony MVH | Felony | 15 years state prison | 1 year | 15 years (life w/ prior OUI) |
§ 24G(b) Misdemeanor MVH | Misdemeanor | 2.5 years HOC | 30 days | Up to 15 years |
§ 24G(c) Reckless Felony MVH | Felony | 5 years state prison | None | Up to 15 years |
c. 265 § 13 1/2 OUI Manslaughter | Felony | 20 years state prison | 5 years (no parole) | 15 years to life |
Why the Specific Charge Matters Enormously
The difference between a misdemeanor motor vehicle homicide charges and an OUI manslaughter conviction is the difference between potential probation and a mandatory five years in state prison. The specific charge shapes everything: the potential sentence, the ability to negotiate, the license consequences, and the long-term impact on a person’s record and life.
If you or a family member is facing any of the motor vehicle homicide charges, understanding exactly what has been filed is the starting point for understanding what comes next.
