October 27, 2015

DWI Detection and Standardized Field Sobriety Testing Session 5 – Phase One: Vehicle in Motion What do you see? • Tries to flee? • No response? • Slow response? • Abrupt weave? • Sudden stop? • Strikes curb? • New violations? • Anything else?

DWI Detection and Standardized Field Sobriety Testing
Session 5 – Phase One: Vehicle in Motion
What do you see?
Tries to flee?
No response?
Slow response?
Abrupt weave?
Sudden stop?
Strikes curb?
New violations?
Anything else?
Vehicle in Motion
Stopping Sequence
5-25
E. Typical Reinforcing Cues of the Stopping Sequence
After the command to stop is given, the alcohol impaired driver may exhibit additional
important evidence of DWI.
Some of these cues are exhibited because the stop command places additional
demands on the driver's ability to divide attention.
The signal to stop creates a new situation, to which the driver must devote some
attention, i.e., emergency flashing lights, siren, etc., demand and divert the subject's
attention.
Signal to stop requires the driver to turn the steering wheel, operate the brake pedal,
activate the signal light, etc.
As soon as officer gives the stop command, the subject's driving task becomes more
complex.
If subject is under the influence, the subject may not be able to handle this more
complex driving very well.
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HS 178 R5/13 18 of 19
DWI Detection and Standardized Field Sobriety Testing
Session 5 – Phase One: Vehicle in Motion
Requires the ability to:
Recognize evidence of alcohol and/or other
drug influence
Describe that evidence clearly and
convincingly
Phase One: Task Two
Observation of the Stop
5-26
Phase One: Task Two Observation of the Stop
It is the officer's responsibility to capture and convey the additional evidence of
impairment that may be exhibited during the stopping sequence.
• Requires ability to recognize evidence of alcohol and/or other drug influence.
• Requires ability to describe that evidence clearly and convincingly.
Recognition and Description of Initial and Reinforcing Cues
Procedures for practicing cue recognition and description.
DWI Detection and Standardized Field Sobriety Testing
Session 5 – Phase One: Vehicle in Motion
The Sliding Sports Car
5-27
DWI Detection and Standardized Field Sobriety Testing
Session 5 – Phase One: Vehicle in Motion
The Impatient Driver
5-28
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HS 178 R5/13 19 of 19
DWI Detection and Standardized Field Sobriety Testing
Session 5 – Phase One: Vehicle in Motion
Half in the Bag
5-29
Standard ized Field Sobriety Test Course
Session 5 – Phase One: Vehicle in Motion
QUESTIONS?
5-32
Test your Knowledge
INSTRUCTIONS: Complete the following sentences.
1. The Phase One tasks are
2. Two common symptoms of impairment are:
3. Alcohol impairs the ability to among tasks.
4. Three cues reinforcing the suspicion of DWI which may be observed during the
stopping sequence are:
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HS 178 R5/13 1 of 14Source: DWI Detection and
Standardized Field
Sobriety Testing

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