LEGAL GUIDE
Written by attorney David Richard Thomas Heath

Standardized Field Sobriety Testing

An overview of the standard battery of field sobriety tests, and how they are scored. This guild covers the Horizontal Gaze Nystagmus (HGN), Vertical Gaze Nystagmus (VGN), Walk and Turn (WAT), and One Leg Stand (OLS) evaluations used by law enforcement to detect impaired drivers.

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