WITH FULL PRACTICE SOLUTION
●● 3 tests for possible DUI
Answer: 1) Horizontal Gaze Nystagmus (HGN)
2) One Leg Stand (OLS)
3) Walk and Turn (WAT)
●● Most reliable FST
Answer: Horizontal Gaze Nystagmus
●● NHTSA 3 Phases
Answer: Phase 1: Vehicle in motion
- Stop the car?
Phase 2: Personal Contact
- SFST testing?
Phase Three: Pre-arrest Screening
- Arrest?
●● Common symptoms of alcohol influence
Answer: A. .03 slowed Reaction
B. .05 Impaired Judgement
, C .08 Impaired vision
D. .10 Poor coordination
●● Horizontal Gaze Nystagmus (HGN)-Steps and Clues
Answer: 3 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
Answer: I. Instructions Stage
1. Stand straight, feet together
2. Keep arms at sides
3. Maintain position until told otherwise
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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
Answer: 4 clues-*2 MINIMUM*