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SFST Exam 2026 | 100+ Standardized Field Sobriety Test Questions & Verified Answers | HGN, Walk-and-Turn, One-Leg Stand, DUI Detection & NHTSA Certification

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Prepare for the SFST Exam 2026 with this comprehensive study guide featuring 100+ expertly organized exam questions and verified answers covering the essential concepts of Standardized Field Sobriety Testing (SFST) and DWI/DUI detection. This resource provides in-depth coverage of Horizontal Gaze Nystagmus (HGN), Walk-and-Turn (WAT), One-Leg Stand (OLS), standardized clues, detection phases, San Diego and Colorado SFST Validation Studies, NHTSA testing procedures, vertical and resting nystagmus, divided attention testing, vehicle-in-motion observations, personal contact, pre-arrest screening, probable cause development, alcohol impairment indicators, blood alcohol concentration (BAC), per se laws, ethanol, officer decision-making, stimulus positioning, eye examinations, post-stop cues, field interview techniques, and standardized roadside sobriety testing protocols. Presented in a structured question-and-answer format, this study guide reinforces critical SFST concepts, strengthens knowledge retention through active recall, and provides an effective preparation resource for certification exams, police academy testing, and law enforcement training. Designed for law enforcement recruits, police officers, sheriff's deputies, state troopers, highway patrol officers, criminal justice students, public safety professionals, DUI enforcement officers, and SFST certification candidates, this guide closely follows the concepts presented in NHTSA Standardized Field Sobriety Testing training programs. It simplifies standardized testing procedures into concise, exam-focused explanations while preserving the terminology and practical applications used during roadside investigations. This resource serves as an excellent companion for academy instruction, practical SFST training, field sobriety testing certification, DUI enforcement courses, and professional development. The content aligns with nationally recognized impaired-driving detection practices and standardized field sobriety testing methodologies used throughout law enforcement. Academic & Professional References National Highway Traffic Safety Administration (NHTSA). DWI Detection and Standardized Field Sobriety Testing (SFST) Participant Manual. National Highway Traffic Safety Administration (NHTSA). Standardized Field Sobriety Testing Training Curriculum. International Association of Chiefs of Police (IACP). SFST Training Resources. Burns, M., & Moskowitz, H. Psychophysical Tests for DWI Arrest. Jones, A. W. Forensic Aspects of Alcohol Measurement and Interpretation. Relevant Students: SFST certification candidates, law enforcement academy recruits, police officers, sheriff's deputies, state troopers, highway patrol officers, criminal justice students, forensic science students, DUI enforcement officers, traffic enforcement officers, field training officers, public safety professionals, law enforcement instructors, impaired driving investigators, professionals preparing for the SFST certification examination. Keywords: SFST Exam 2026, Standardized Field Sobriety Test, SFST Certification, DUI Detection, DWI Detection, NHTSA, National Highway Traffic Safety Administration, HGN, Horizontal Gaze Nystagmus, Walk and Turn, WAT, One Leg Stand, OLS, Standardized Field Sobriety Testing, Divided Attention Test, Nystagmus, Vertical Gaze Nystagmus, Resting Nystagmus, HGN Clues, WAT Clues, OLS Clues, Detection Phases, Vehicle in Motion, Personal Contact, Pre Arrest Screening, Probable Cause, Post Stop Cues, BAC, Blood Alcohol Concentration, Per Se Law, Alcohol Impairment, Ethanol, Alcohol Physiology, Officer Observations, Field Interview, Stimulus Positioning, Equal Tracking, Equal Pupil Size, Medical Impairment Check, San Diego SFST Validation Study, Colorado SFST Study, DUI Investigation, DWI Investigation, Roadside Sobriety Testing, Law Enforcement Training, Police Academy, Criminal Justice, Practice Questions, Verified Answers, Study Guide

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SFST Exam 2026 Exam
Questions and Correct
Answers | New Update



HGN - ANSWER ✔✔Horizontal Gaze Nystagmus


Maximum Number of Clues Possible for the Horizontal Gaze Nystagmus

Test - ANSWER ✔✔6


3 in each eye

A Good Structured Field Sobriety test is __________ and

_________________________ - ANSWER ✔✔Simple and 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?

How many clues have been validated for the One Leg Stand Test -

ANSWER ✔✔4


How long should the subject stand with a foot raised , on the One Leg

Stand test - ANSWER ✔✔30 Seconds




if on test then

Until told to Stop

What Walk and Turn clue can be scored in the instruction Stage -

ANSWER ✔✔Start too soon


When Checking for the lack of smooth pursuit during the HGN Test, the

stimulus should be move at __________________________ Seconds

from center to side - ANSWER ✔✔approximately 2 Seconds


in the walk and turn test, the subject is required to take ___ ________-

___-________ steps in a strait line, turn around in a prescribed manner

and return ___ ______-__-_____ Steps back along the line -

ANSWER ✔✔9 heel-to-toe

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