The Standardized Field Sobriety Test is a series of three assessments that South Carolina law enforcement officials administer to help them determine whether a driver suspected of impairment is in fact impaired. The series consists of the horizontal gaze nystagmus, the one-leg stand and the walk-and-turn test. Reportedly, the National Highway Traffic Safety Administration helped in the research used to develop these assessments.
Residents of Clemson, South Carolina who are pulled over by police because of an alleged traffic violation may be asked to take a test to help police determine if their motor skills or sense of perception are too compromised to safely drive a vehicle. The results of these field sobriety tests often determine whether or not a motorist is charged with a DUI.