The per se threshold is 0.08 BAC for adult drivers, 0.04 for commercial drivers, and 0.02 for drivers under 21. The threshold is set by RIGL section 31-27-2. Driving over the threshold is a per se DUI - the state does not have to prove actual impairment beyond the BAC reading.
What is the Rhode Island DWI legal limit?The RI DUI Guy - Chad F Bank2026-05-23T14:10:46-04:00