DWI
Detection and Standardized Field Sobriety Testing
Session
7 – Phase Three: Pre-Arrest Screening
Walk and Turn
One Leg Stand
Two Divided Attention Field
Sobriety Tests
7-16
Two
divided attention field sobriety tests that have proven accurate and effective
in DWI
detection
are the Walk and Turn and the One Leg Stand.
DWI
Detection and Standardized Field Sobriety Testing
Session
7 – Phase Three: Pre-Arrest Screening
• Validated
by NHTSA
• 68%
accurate detecting ≥ 0.10 BAC
• Do
NOT deviate from SFST instructions
• Two
stages:
1. Instructions Stage
2. Walking Stage
Walk and Turn
7-17
Walk and Turn
Walk
and Turn is a test that has been validated through extensive research sponsored
by
the National Highway Traffic Safety Administration.
The
original research was conducted by the SCRI and used to develop the initial
curriculum
showing this test was 68% accurate at detecting subjects at or above a 0.10
BAC.
Walk
and Turn is a divided attention test consisting of two stages:
•
Instructions stage
•
Walking stage
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HS
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