---
title: "What is the Rhode Island DUI law?"
description: "Rhode Island General Laws section 31-27-2 makes it illegal to operate a vehicle under the influence of alcohol or drugs. The per se BAC threshold is 0.08 for adult drivers, 0.04 for commercial..."
url: https://riduiguy.com/faq-items/what-is-the-rhode-island-dui-law/
date: 2026-05-23
modified: 2026-05-23
author: "The RI DUI Guy"
type: faq
lang: en
---

# What is the Rhode Island DUI law?

Rhode Island General Laws section 31-27-2 makes it illegal to operate a vehicle under the influence of alcohol or drugs. The per se BAC threshold is 0.08 for adult drivers, 0.04 for commercial drivers, and 0.02 for drivers under 21. The law also covers prescription medications and controlled substances that impair driving.

What is the Rhode Island DUI law?(https://riduiguy.com/author/riduiguy/)2026-05-23T02:38:16-04:00