MA H1709

Amends Massachusetts OUI law to expand "drug" definition to include any substance that impairs driving ability, replacing the previous list of specific substances (marijuana, narcotics, depressants, stimulants, glue vapors)

Establishes implied consent for chemical testing (breath, urine, or blood) when a driver is arrested for OUI, with blood tests permitted only at licensed medical facilities

Imposes escalating license suspension penalties for refusing chemical tests: 180 days for first refusal, 3 years for those under 21 or with prior OUI convictions, 5 years for those with 2 prior violations, and lifetime suspension for 3 or more prior violations

Requires police to immediately confiscate licenses, provide written suspension notice, and impound vehicles for 12 hours when drivers refuse testing, with refusal reports submitted to the registrar within 24 hours

Allows chemical test results from State Police or certified lab chemists showing blood alcohol or impairing substances to serve as prima facie evidence in court proceedings