October 27, 2015

DWI Detection and Standardized Field Sobriety Testing Session 5 – Phase One: Vehicle in Motion • Difficulty with motor vehicle controls

DWI Detection and Standardized Field Sobriety Testing
Session 5 – Phase One: Vehicle in Motion
Difficulty with motor vehicle controls
Fumbling with driver license or registration
Difficulty exiting the vehicle
Repeating questions or comments
Swaying, unsteady, or balance problems
Leaning on the vehicle or other object
Slurred speech
Slow to respond to officer/officer must repeat
Provides incorrect information, changes answers
Odor of alcoholic beverage from the driver
Post Stop Clues
5-14
The research also identified 10 post stop cues. [P > .85].
• Difficulty with motor vehicle controls
• Fumbling with driver license or registration
• Difficulty exiting the vehicle
• Repeating questions or comments
• Swaying, unsteady, or balance problems
• Leaning on the vehicle or other object
• Slurred speech
• Slow to respond to officer/officer must repeat
• Provides incorrect information, changes answers
• Odor of alcoholic beverage from the driver
Explanation and illustration of the 24 detection cues.
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HS 178 R5/13 11 of 19
DWI Detection and Standardized Field Sobriety Testing
Session 5 – Phase One: Vehicle in Motion
Visual Cues of Motorcycle
Impaired Drivers
5-15
C. Initial Observations: Visual Cues of Impaired Vehicle Operation (Motorcycles)
DWI Detection and Standardized Field Sobriety Testing
Session 5 – Phase One: Vehicle in Motion
Drifting during turn or curve
Trouble with dismount
Trouble with balance at a stop
Turning problems
Inattentive to surroundings
Inappropriate or unusual behavior
Weaving
Motorcycle DUI Detection Guide
Excellent Cues (50% or Greater Probability)
5-16
Research has identified driving impairment cues for motorcyclists.
(ANACAPA Sciences, DOT HS 807 839, 1993.)
Excellent cues (50% or greater probability).
• Drifting during turn or curve
• Trouble with dismount
• Trouble with balance at a stop
• Turning problems (e.g., unsteady, sudden corrections, late braking, improper lean
angle)
• Inattentive to surroundings
• Inappropriate or unusual behavior (e.g., carrying or dropping object, urinating at
roadside, disorderly conduct, etc.)
• Weaving
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HS 178 R5/13 12 of 19Source: DWI Detection and
Standardized Field
Sobriety Testing

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