SFST Evaluation Factors 3

Question 1

In the SFST battery, the correct sequence for administering the three standardized tests is:

Accepted Answer

HGN, Walk-and-Turn, One-Leg Stand

Answer

NHTSA's validated sequence is HGN first, followed by Walk-and-Turn, then One-Leg Stand.

Question 2

What BAC threshold did NHTSA research use to validate the SFST battery's accuracy predictions?

Accepted Answer

0.08% BAC

Answer

The SFST battery was validated against the 0.08% BAC per se limit currently adopted in all U.S. states.

Question 3

Which of the following is NOT one of the eight clues scored on the Walk-and-Turn test?

Accepted Answer

Sways side to side during instruction phase

Answer

Swaying side to side during the instruction phase is not one of the eight official clues; the eight clues are specific movements during test execution.

Question 4

When an officer observes a suspect with resting nystagmus before the HGN test begins, this finding most likely indicates:

Accepted Answer

A neurological condition or very high level of CNS depressant influence

Answer

Resting nystagmus (eye jerking at center gaze with no stimulus) can indicate neurological pathology or extremely high levels of CNS depressant impairment.

Question 5

An officer is administering the One-Leg Stand and the suspect raises their arms 8 inches from their sides. How many clues does this single action represent?

Accepted Answer

One clue — raises arms

Answer

Raising arms more than 6 inches is counted as one distinct clue regardless of the degree to which they are raised.

(SFST) Standardized Field Sobriety Testing Certified Practice Test

(SFST) Standardized Field Sobriety Testing Certified Practice Test

SFST Evaluation Factors 3