SFST CERTIFICATION EVALUATION SCRIPT
FULL SOLUTION GRADED A+
●● A good structured field sobriety test is simple and
Answer: divides the subject's attention
●● The officer's principal decision during the Detection Phase One
usually is
Answer: do I have sufficient grounds to stop this vehicle
●● The maximum number of clues for horizontal gaze nystagmus that
can appear in one eye is
Answer: 3
●● if resting nystagmus is observed with a subject, this may be an
indicator of
Answer: a medical condition
●● Which of the following Walk and Turn clues can be scored in the
instructions stage
Answer: starts too soon
, ●● When checking for the lack of smooth pursuit during the HGN test,
the stimulus should be moved at approximately ________secs from
center to side
Answer: 2
●● In the walk and turn test, the subject is required to take nine heel to
toe steps in a straight line, turn around in a prescribed manner and return
_____ heel to toe steps back along the line
Answer: 9
●● Which of the following is not a validated field sobriety test
Answer: Modified Romberg Balance
●● Detection Phase One is called
Answer: Vehicle in Motion
●● The SFST Validation study that addressed the question, "Do SFSTs
discriminate at BAC levels below 0.10%?" was the _________
Answer: San Diego SFST Validation Study
●● Detection Phase Two is called
Answer: Personal Contact
FULL SOLUTION GRADED A+
●● A good structured field sobriety test is simple and
Answer: divides the subject's attention
●● The officer's principal decision during the Detection Phase One
usually is
Answer: do I have sufficient grounds to stop this vehicle
●● The maximum number of clues for horizontal gaze nystagmus that
can appear in one eye is
Answer: 3
●● if resting nystagmus is observed with a subject, this may be an
indicator of
Answer: a medical condition
●● Which of the following Walk and Turn clues can be scored in the
instructions stage
Answer: starts too soon
, ●● When checking for the lack of smooth pursuit during the HGN test,
the stimulus should be moved at approximately ________secs from
center to side
Answer: 2
●● In the walk and turn test, the subject is required to take nine heel to
toe steps in a straight line, turn around in a prescribed manner and return
_____ heel to toe steps back along the line
Answer: 9
●● Which of the following is not a validated field sobriety test
Answer: Modified Romberg Balance
●● Detection Phase One is called
Answer: Vehicle in Motion
●● The SFST Validation study that addressed the question, "Do SFSTs
discriminate at BAC levels below 0.10%?" was the _________
Answer: San Diego SFST Validation Study
●● Detection Phase Two is called
Answer: Personal Contact
