DWI Practical Guide
Standardized Field Sobriety Tests
What officers are trained to observe during a DWI investigation — and the conditions in which results are gathered.
Why this guide exists
SFSTs are evaluative tools. Understanding what officers are trained to look for — and the conditions in which results are gathered — helps you and your attorney discuss the evidence in your case. This guide does not coach performance and is not legal advice.
Explore each test in depth
At-a-glance recap
HGN
Involuntary eye jerk
Up to 6 clues
Walk & Turn
Divided attention + gait
Up to 8 clues
One Leg Stand
Balance + divided attention
Up to 4 clues
From the firm
A note from Spiegelhauer Law
Field Sobriety Tests are tools used by law enforcement during DWI investigations. Officers receive training on how to administer and evaluate these tests. Like any field evaluation, the results may become an issue in court and should be considered alongside the rest of the evidence in a case. If you have specific questions about your situation, talk with your attorney.
Educational information only. Not legal advice. Always discuss the specific facts of your case with your attorney.
