NH SB620

Increases license suspension for first-time refusal to submit to alcohol/drug testing from 180 days to 9 months, and from 2 years to 3 years for those with prior DWI convictions or prior refusals

Allows courts to suspend up to 180 days of the license suspension imposed for test refusal when the person pleads guilty or nolo contendere to a DWI offense

Creates new penalty structure for aggravated DWI under RSA 265-A:3, III, classified as a class A misdemeanor with a minimum $750 fine and mandatory 17-day jail sentence (which may be suspended)

Requires substance use disorder evaluation within 60 days of release and compliance with a service plan as a condition of suspended jail time for aggravated DWI

Mandates installation of an ignition interlock device and 18-month minimum license revocation (extendable to 2 years) for aggravated DWI, with possible 6-month reduction for treatment compliance; effective January 1, 2027