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SFST Questions and Answers | Latest Version | 2025/2026 | Correct & Verified
What is the purpose of SFSTs during a DUI investigation?✔✔ To help determine if a driver is impaired by observing physical and cognitive signs of intoxication.
What does the acronym SFST stand for?✔✔ Standardized Field Sobriety Test.
Which three tests make up the SFST battery?✔✔ Horizontal Gaze Nystagmus (HGN), Walk-and-Turn, and One-Leg Stand.
What is the main purpose of the Horizontal Gaze Nystagmus test?✔✔ To detect involuntary eye movements that may indicate impairment.
What is nystagmus?✔✔ An involuntary jerking of the eyes, which can be exaggerated by alcohol or drugs.
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How many clues are possible in the HGN test?✔✔ A total of six clues, three in each eye.
At what angle should the officer observe maximum deviation during the HGN test?✔✔ Approximately 45 degrees from the center position.
Why is it important to hold the stimulus for four seconds during maximum deviation in the HGN test?✔✔ To allow the officer to observe sustained nystagmus clearly.
What is one sign of impairment during the Walk-and-Turn test?✔✔ Stepping off the line.
How many total clues can be observed in the Walk-and-Turn test?✔✔ Eight clues in total.
What instruction is given before the Walk-and-Turn test begins?
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