October 29, 2015

DWI Detection and Standardized Field Sobriety Testing Session 7 – Walk and Turn – Instructions Stage

DWI Detection and Standardized Field Sobriety Testing
Session 7 – Phase Three: Pre-Arrest Screening
Divides subject’s attention:
Balancing
Information processing
Subject stands with feet in heel to toe
position
Arms at side
Listen to instructions
Walk and Turn – Instructions Stage
7-18
The Instructions Stage divides the subject's attention between a balancing task
(standing while maintaining the heel to toe position) and an information processing task
(listening to and remembering instructions).
In the Instructions Stage, the subject must stand with their feet in a heel to toe position,
keep their arms at their sides, and listen to the instructions.
DWI Detection and Standardized Field Sobriety Testing
Session 7 – Phase Three: Pre-Arrest Screening
Divides driver's attention:
Balancing task
Small muscle control task
Short term memory task
Walk and Turn – Walking Stage
7-19
In the Walking Stage the subject takes nine heel to toe steps, turns in a prescribed
manner, takes nine heel to toe steps back, counts the steps out loud, and watches their
feet. During the turn, the subject keeps their front foot on the line, turns in a prescribed
manner, and uses the other foot to take several small steps to complete the turn. The
Walking Stage divides the subject's attention among a balancing task (walking heel to
toe and turning); a small muscle control task (counting out loud); and a short term
memory task (recalling the number of steps and the turning instructions).
The walking stage divides the subject's attention between a task of listening,
comprehending and carrying out the instruction.
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HS 178 R5/13 12 of 26
DWI Detection and Standardized Field Sobriety Testing
Session 7 – Phase Three: Pre-Arrest Screening
1. Cannot keep balance while
listening to the instructions
2. Starts too soon
3. Stops while walking
4. Does not touch heel to toe
5. Steps off the line
6. Uses arms to balance
7. Improper turn
8. Incorrect number of steps
Walking and Turn Test Clues
7-20
The Walk and Turn test is administered and interpreted in a standardized manner, i.e.,
the same way every time. Officers administering the Walk and Turn test observe the
subject's performance for eight clues:
• Cannot keep balance while listening to the instructions
• Starts too soon
• Stops while walking
• Does not touch heel to toe
• Steps off the line
• Uses arms to balance
• Improper turn
• Incorrect number of steps
Inability to complete the Walk and Turn test may occur when the subject is in danger of
falling or otherwise cannot complete the test.
Notes:_______________________________________________
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HS 178 R5/13 13 of 26 Source: DWI Detection and
Standardized Field
Sobriety Testing
March 2013 Edition
Standardized Field Sobriety Test Course
Session 1 - Introduction
Glossary of Terms


10/27 added up to Session 6-Phase Two: Personal Contact
DWI Detection and Standardized Field Sobriety Testing
What do you see?
Personal Contact

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