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OPA SFST STUDY GUIDE WITH COMPLETE SOLUTIONS|| GRADED A+|| LATEST UPDATE 2026

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OPA SFST STUDY GUIDE WITH COMPLETE SOLUTIONS|| GRADED A+|| LATEST UPDATE 2026

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OPA SFST
Course
OPA SFST

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OPA SFST STUDY GUIDE WITH
COMPLETE SOLUTIONS|| GRADED A+||
LATEST UPDATE 2026
What % BAC does your body process alcohol at? -CORRECTANSWER .015 per hour



What was the study that determined the numbers for accuracy? -CORRECTANSWER

San Diego Study



What are you trying to determine during phase 1 of OWI? -CORRECTANSWER

Whether or not you can stop a vehicle. Initial observation of vehicle in motion



What are you trying to determine during phase 2 of OWI? -CORRECTANSWER

Whether or not you can ask the driver to step out of the vehicle to complete field

sobriety tests. Face-to-face observation and interview



What are you trying to determine during phase 3 of OWI? -CORRECTANSWER

Whether or not you can arrest the driver for OWI. Pre-arrest screening SFSTs and

PBTs



What is the accuracy for horizontal gaze nystagmus (HGN) and vertical gaze

nystagmus (VGN)? -CORRECTANSWER 88% accurate at a BAC of .08
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