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SFST

Type of alcohol contained in beverage Ethanol
Illegal per se law, it is an offense to operate while Having a statutorily prohibited blood alcohol content
Good structured field sobriety test Divides the subjects attention
Officer's principle decision in detection phase 2 Instruct driver to exit
Police officer's principle decision during detection phase 3 Should I arrest the operator
The word nystagmus means Involuntary jerking off the eyes
During the one-leg stand test the subject is told to count out loud. . . Until told to stop
In the walk-and-turn test, the subject is required to take nine heel-to-toe steps out and ____ Heel To Toe steps back 9
The only three valid field sobriety tests Horizontal gaze nystagmus Walk and turn One leg stand
Officers principle decision during detection phase one Do I have sufficient grounds to stop this vehicle
Horizontal Gaze Nystagmus qualifiers Equal pupil size No resting nystagmus Equal tracking
HGN test clues Lack of smooth pursuit Distinct and sustained nystagmus at maximum deviation Onset of nystagmus prior to 45 degrees
HGN indicator Vertical gaze nystagmus
Distance of stimulant from nose of subject 12-15 inches
How long do you hold for maximum deviation At least 4 but not more than 30 seconds
Verbal instruction for HGN test Put your feet together Hands at your side Keep head still Look at the stimulus Follow movement of stimulus with eyes only Keep looking at stimulus until test is over Do you understand
Created by: DSO Academy