SFST Exam 2026 | 150+ Standardized Field Sobriety Test Questions & Correct Answers | HGN, Walk-and-Turn, One-Leg Stand, DUI Detection & NHTSA Guidelines

Prepare for the SFST Exam 2026 with this comprehensive study guide featuring 150+ updated exam questions and correct answers covering the complete Standardized Field Sobriety Testing (SFST) curriculum and DUI detection procedures. This exam-focused resource provides extensive coverage of Horizontal Gaze Nystagmus (HGN), Walk-and-Turn (WAT), One-Leg Stand (OLS), Preliminary Breath Test (PBT), National Highway Traffic Safety Administration (NHTSA) standards, San Diego validation study accuracy rates, divided attention testing, nystagmus evaluation, vehicle-in-motion observations, personal contact, pre-arrest screening, probable cause development, DUI and DWI detection phases, alcohol physiology, blood alcohol concentration (BAC), alcohol metabolism and elimination, implied consent laws, psychophysical testing, standardized clues, arrest decision-making, officer observations, impairment indicators, field interview techniques, and courtroom considerations involving SFST evidence. Presented in a structured question-and-answer format, this guide strengthens conceptual understanding, reinforces standardized testing procedures, and promotes active recall to maximize success on certification exams, academy testing, and law enforcement training. Designed for law enforcement recruits, police officers, sheriff's deputies, highway patrol officers, state troopers, criminal justice students, public safety professionals, and SFST certification candidates, this study guide closely follows the concepts taught in NHTSA Standardized Field Sobriety Testing training programs. It simplifies complex DUI detection procedures into concise, exam-oriented explanations while preserving the terminology and practical applications used during roadside investigations. The material serves as an excellent companion to police academy instruction, SFST practical exercises, DUI enforcement courses, and certification preparation. The topics covered align with nationally recognized impaired-driving detection standards and standardized roadside sobriety testing procedures, making this resource valuable for both initial certification and refresher training. 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 Instructor and Participant Training Curriculum. International Association of Chiefs of Police (IACP). Standardized Field Sobriety Testing (SFST) 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, Preliminary Breath Test, PBT, BAC, Blood Alcohol Concentration, DUI Investigation, DWI Investigation, Alcohol Physiology, Alcohol Metabolism, Alcohol Elimination, Implied Consent, Per Se DUI, Impairment, Divided Attention Test, Psychophysical Tests, Vehicle in Motion, Personal Contact, Pre Arrest Screening, Probable Cause, SFST Clues, HGN Clues, WAT Clues, OLS Clues, Nystagmus, Vertical Gaze Nystagmus, Resting Nystagmus, DUI Enforcement, Traffic Enforcement, Driver Impairment, Officer Observations, Field Interview, Arrest Decision, Alcohol Absorption, CNS Depressant, San Diego Validation Study, Law Enforcement Training, Police Academy, Criminal Justice, Practice Questions, Correct Answers, Study Guide