SFST EXAM ( Update) Real Past Questions | Solved Papers | Verified Answers, Exams of Public Law

SFST EXAM (2025-2026 Update) Real Past Questions | Solved Papers |
Verified Answers, Exams of Public Law




San Diego Percentages - ANSWERSan Diego FST validation—NHSTA accurate

a. HGN was 88%

b. WAT 79%

c. OLS 83%



3 tests for possible DUI - ANSWER1) Horizontal Gaze Nystagmus (HGN)

2) One Leg Stand (OLS)

3) Walk and Turn (WAT)



Most reliable FST - ANSWERHorizontal Gaze Nystagmus



NHTSA 3 Phases - ANSWERPhase 1: Vehicle in motion

- Stop the car?

Phase 2: Personal Contact

- SFST testing?

Phase Three: Pre-arrest Screening

- Arrest?

, Common symptoms of alcohol influence - ANSWERA. .03 slowed Reaction

B. .05 Impaired Judgement

C .08 Impaired vision

D. .10 Poor coordination



Horizontal Gaze Nystagmus (HGN)-Steps and Clues - ANSWER3 clues per eye-
IN ORDER *(4 min)*

1. Lack of smooth pursuit

2. Distinct and sustained nystagmus at maximum deviation

3. Onset of nystagmus prior to 45 degrees



One Leg Stand (OLS)--Two Stages - ANSWERI. Instructions Stage

1. Stand straight, feet together

2. Keep arms at sides

3. Maintain position until told otherwise

--

II. Balance and counting stage.

1. Raise either leg

2. Keep raised foot approx. 6 in off ground, and keep both legs straight and
arms at your side



One Leg Stand (OLS)--Clues - ANSWER4 clues-*2 MINIMUM*

1. Puts foot down.

2. Uses arms to balance