Standard Field Sobriety Testing, or SFSTs consists of 3 tests

HORIZONTAL GAZE NYSTAGMUS (HGN) is the involuntary jerking of the eyes when gazing from side to side usually caused by drugs, alcohol or medical condition.

Consists of 3 Possible Test Clues:

1. lack of smooth pursuit

2. distinct and sustained nystagmus at maximum deviation

3. onset of nystagmus prior to 45 degrees

WALK & TURN

Consists of 8 Possible Test Clues:

1. cannot keep balance

2. starts too soon

3. stops while walking

4. does not touch heal to toe

5. steps off line

6. uses arms to balance

7. improper turn

8. incorrect number of steps

ONE LEG STAND

Consists of 4 Possible Test Clues:

1. sways while balancing

2. uses arms to balance

3. hopping

4. puts foot down

***SOURCE Standard Filed Sobriety Testing Training Manuel

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