STUDIES
PHASES
HGN
WALK & TURN
ONE LEG STAND
100

The San Diego SFST Validation Study determined this test to be the most accurate at determining a BAC of 0.08% or higher

What is HGN?

100

This is the first phase

What is Vehicle in Motion?

100

This is the maximum number of clues in each eye

What is three (3)?

100

This test should be conducted on this

What is a relatively flat area, free from debris?

100

This is a __________ test.

What is a divided attention test.

200

These are the organizations which funded the studies

What is NHTSA and SCRI?

200

This is the second phase

What is Personal Contact?

200

The stimulus is held this far away

What is 12-15 inches and slightly above eye level?

200

This is the amount of validated clues to the WAT

What is eight (8)?

200

This test is timed for _____ seconds. 

What is 30 seconds.

300

These are the three (3) validation studies conducted

What are the Colorado, Florida, and San Diego studies?

300

This is the principal decision point in Phase 1

What is should I stop the vehicle?

300

VGN is only recorded if it is distinct and sustained for

What is a minimum of 4 seconds?

300

These are the clues found in the instruction stage

What are Loses Balance and Starts Too Soon?

300

This is the number of validated clues in OLS

What is four (4)?

400

This test study asked if SFST's discriminated at BAC levels below 0.10%

What is the 1998 San Diego SFST Validation Study?

400

This is the principal decision in Phase 2

What is Should I have the Driver Exit the Vehicle?

400

This is defined as Horizontal Gaze Nystagmus

What is the involuntary jerking of the eyes as they gaze from side to side?

400

The subject is directed to leave this foot on the line

What is the front or lead foot?

400

This is the acronym used to remember the clues for One Leg Stand

What is P.U.S.H.

500

When a person has a BAC above a 0.08% and were placed under arrest or had a BAC below a 0.08% and were released is considered this

What is a Good Arrest Decision?

500

This is the principal decision in Phase 3

What is Should I Arrest This Person?

500

This is the second clue in HGN

What is the distinct and Sustained Nystagmus at Maximum Deviation?

500

These are the two stages of the WAT test

What are the Instructions and Walking

500
What accuracy score did the San Diego study give this test?

What is 83%?

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