NHTSA SFST Study Guide Exam
Questions With 100% Verified Answers
What are the 3 phases of DWI enforcement? -
Correct Answer ✅Phase 1: Vehicle in Motion
Phase 2: Personal Contact
Phase 3: Pre-arrest Screening
What decision are you making in phase 1? -
Correct Answer ✅Should I stop the vehicle?
What decision are you making in phase 2? -
Correct Answer ✅Should the driver exit the vehicle?
What decision are you making in phase 3? -
Correct Answer ✅Should I arrest the subject?
What are two requirements of a good field sobriety test? -
Correct Answer ✅1.) Simple
2.) Divide attention
What are the 3 validated field sobriety tests? -
Correct Answer ✅1.) Horizontal Gaze Nystagmus
2.) Walk and Turn
, NHTSA SFST Study Guide Exam
Questions With 100% Verified Answers
3.) One leg Stand
What are the validated clues for HGN, in the correct order? -
Correct Answer ✅1.) Lack of Smooth Pursuit
2.) Distinct and sustained nystagmus at maximum deviation
3.) Onset prior to 45
Define HGN -
Correct Answer ✅Involuntary jerking of the eyes occurring as the
eyes gaze to the side.
What are the 3 medical checks for HGN? -
Correct Answer ✅1.) Equal pupil size
2.) Resting nystagmus
3.) Equal tracking
Resting nystagmus may include what? -
Correct Answer ✅Drug Influence or Medical Impairment
How far from the nose should the stimulus be positioned? -
Correct Answer ✅12-15 inches
Questions With 100% Verified Answers
What are the 3 phases of DWI enforcement? -
Correct Answer ✅Phase 1: Vehicle in Motion
Phase 2: Personal Contact
Phase 3: Pre-arrest Screening
What decision are you making in phase 1? -
Correct Answer ✅Should I stop the vehicle?
What decision are you making in phase 2? -
Correct Answer ✅Should the driver exit the vehicle?
What decision are you making in phase 3? -
Correct Answer ✅Should I arrest the subject?
What are two requirements of a good field sobriety test? -
Correct Answer ✅1.) Simple
2.) Divide attention
What are the 3 validated field sobriety tests? -
Correct Answer ✅1.) Horizontal Gaze Nystagmus
2.) Walk and Turn
, NHTSA SFST Study Guide Exam
Questions With 100% Verified Answers
3.) One leg Stand
What are the validated clues for HGN, in the correct order? -
Correct Answer ✅1.) Lack of Smooth Pursuit
2.) Distinct and sustained nystagmus at maximum deviation
3.) Onset prior to 45
Define HGN -
Correct Answer ✅Involuntary jerking of the eyes occurring as the
eyes gaze to the side.
What are the 3 medical checks for HGN? -
Correct Answer ✅1.) Equal pupil size
2.) Resting nystagmus
3.) Equal tracking
Resting nystagmus may include what? -
Correct Answer ✅Drug Influence or Medical Impairment
How far from the nose should the stimulus be positioned? -
Correct Answer ✅12-15 inches
