---
title: "What defenses do drunk driving lawyers use?"
description: "Common defenses: no reasonable suspicion for the stop, no probable cause to arrest, breath test calibration or operator certification issues, 20-minute observation period violations, field sobriety..."
url: https://riduiguy.com/faq-items/what-defenses-do-drunk-driving-lawyers-use/
date: 2026-05-23
modified: 2026-05-23
author: "The RI DUI Guy"
type: faq
lang: en
---

# What defenses do drunk driving lawyers use?

Common defenses: no reasonable suspicion for the stop, no probable cause to arrest, breath test calibration or operator certification issues, 20-minute observation period violations, field sobriety test scoring problems, medical conditions affecting performance, refusal advisement defects, and Miranda compliance failures.