OUI of Drugs Defense in Westwood

How Massachusetts Defines OUI of Drugs

Massachusetts uses the term operating under the influence, or OUI, whether the alleged impairment involves alcohol, drugs, or both. People may search for a drug DUI or DWI lawyer, but Massachusetts charges the alleged offense as OUI. We defend these cases for clients in Westwood and Norfolk County.

Massachusetts General Laws c. 90, §24 prohibits operating a motor vehicle while under the influence of marijuana, narcotic drugs, depressants, or stimulant substances as defined by state law. The statute also addresses intoxicating liquor and certain toxic vapors. Marijuana, narcotics, stimulants, depressants, and some prescription medications may be relevant when the government alleges that a substance impaired a person’s ability to drive.

Evidence in an OUI of Drugs Case

Police may request chemical testing or roadside assessments after an OUI arrest. The presence of a substance doesn’t necessarily prove impairment, so the circumstances surrounding each piece of evidence matter.

Common areas of review include:

• Officer observations: Reports may describe driving behavior, speech, coordination, demeanor, or other observations made during the stop.
• Roadside assessments: In marijuana cases, these assessments document observations about balance, coordination, mental acuity, and driving skills. They aren’t pass-or-fail tests and don’t conclusively establish impairment.
• Drug Recognition Expert evaluations: This officer-led assessment documents observations that police may cite in an alleged drug-impairment case. The evaluation doesn’t by itself prove impairment.
• Chemical testing: The test request, its administration, and the resulting evidence may all require review.

A police officer or unqualified lay witness may describe observations but may not offer an opinion that a driver was under the influence of marijuana. We assess how testimony is framed and whether it stays within the limits Massachusetts law places on opinion testimony.

Prescription Medication & Involuntary Intoxication

A valid prescription doesn’t automatically resolve an OUI allegation when impairment is claimed. Massachusetts model jury instructions recognize involuntary intoxication in limited circumstances when legal prescription medication solely causes intoxication and the person didn’t voluntarily consume it with effects that were known or reasonably knowable. The medication, dosage circumstances, warnings, and available evidence can therefore affect the defense analysis.

Criminal Penalties & RMV License Consequences

An OUI of drugs allegation can create two separate concerns: the criminal case and administrative consequences involving the Massachusetts Registry of Motor Vehicles. Refusing a requested chemical test may result in an immediate license suspension, even though the refusal isn’t admissible as evidence of guilt in a criminal OUI trial. These separate proceedings may both require prompt attention.

A conviction may carry criminal penalties, including fines or incarceration. The potential consequences depend on factors such as prior OUI history and the facts of the current allegation.

We review the criminal charge and any related RMV issue separately so that each receives the attention it requires.