First offense DUI penalties under RIGL section 31-27-2 vary by BAC tier. BAC 0.08-0.10: probation typical, license loss 30 to 180 days, fines $100 to $300, 10-week DWI program. BAC 0.10-0.15: license loss 3 to 12 months, fines $100 to $400. BAC 0.15+: mandatory ignition interlock, license loss 6 to 18 months, fines $500 to $1,000.
