Who administers the SFST certification in the United States?

The Standardized Field Sobriety Testing program is administered by the National Highway Traffic Safety Administration (NHTSA) in partnership with the International Association of Chiefs of Police (IACP). State law enforcement training academies deliver the curriculum, and certification is recognized across all 50 states for DUI enforcement officers.

What is the format of the SFST certification exam?

The SFST exam combines a written knowledge test with practical proficiency evaluations. Officers must demonstrate correct administration of all three field sobriety tests on volunteer subjects during a dry lab and wet lab, where volunteers have consumed measured alcohol doses to reach known BAC levels.

How many questions are on the SFST written exam?

The written portion typically contains 25 to 50 multiple-choice and true/false questions drawn from the NHTSA student manual. Questions cover test procedures, clue identification, scoring criteria, legal standards, and the physiology of alcohol impairment. Exact question counts vary by state training academy.

What passing score is required for SFST certification?

Candidates must score at least 80 percent on the written exam and demonstrate proficiency on all three tests during practical evaluations. Officers must correctly identify impairment clues within acceptable tolerance ranges during wet lab testing, where instructors verify accuracy against known subject BAC readings.

Who is eligible to take the SFST certification course?

The course is open to sworn law enforcement officers, highway patrol troopers, and military police involved in traffic enforcement. Some states extend eligibility to prosecutors, toxicologists, and expert witnesses. Candidates generally need academy graduation and departmental sponsorship to register for the 24-hour NHTSA-approved training.

How do officers register for SFST training and certification?

Registration is handled through state police training academies, POST commissions, or regional law enforcement training centers. Departments typically sponsor officers, covering the 24-hour course fee. Training schedules are posted on state POST websites, and seats often fill quickly due to mandatory recertification cycles every two years.

What are the best preparation tips for the SFST exam?

Study the NHTSA SFST Student Manual thoroughly, memorizing the specific clues for each test: six for HGN, eight for Walk-and-Turn, and four for One-Leg Stand. Practice verbal instructions until delivery is automatic, and review case law including Ohio v. Homan and standardized administration requirements.

How long is SFST certification valid before recertification?

Initial SFST certification remains valid for two years in most jurisdictions. Officers must complete an 8-hour refresher course covering updated NHTSA protocols, recent case law, and practical skill reassessment. Failure to recertify on schedule can affect court testimony credibility and departmental DUI enforcement assignments.

SFST (Standardized Field Sobriety Testing Certified) Test Guide

Free SFST (Standardized Field Sobriety practice test with questions and answer explanations. Prepare for the 2026 May exam with instant scoring.

SFST - Standardized Field Sobriety Testing Certified By Captain Jennifer WalshMay 7, 202651 min read

SFST (Standardized Field Sobriety Testing Certified) Test Guide

⏱️24 HoursCourse Length

📝80%Passing Score

✅3Core Tests

💵$0-$600Exam Fee

The NHTSA SFST curriculum is the gold standard for impaired driving enforcement in the United States. Passing the SFST instructions and proficiency exams certifies you to administer these tests during traffic stops.

SFST (Standardized Field Sobriety Testing Certified) Test Guide - Standardized Field Sobriety Testing Certified preparation guide

SFST Practice Test Questions

Prepare for the SFST - Standardized Field Sobriety Testing Certified exam with our free practice test modules. Each quiz covers key topics to help you pass on your first try.

SFST Court Testimony

SFST Exam Questions covering Court Testimony. Master SFST Test concepts for certification prep.

SFST Documentation

Free SFST Practice Test featuring Documentation. Improve your SFST Exam score with mock test prep.

SFST Evaluation Factors

SFST Mock Exam on Evaluation Factors. SFST Study Guide questions to pass on your first try.

SFST HGN Test

SFST Test Prep for HGN Test. Practice SFST Quiz questions and boost your score.

SFST Legal and Ethical Considerations

SFST Questions and Answers on Legal and Ethical Considerations. Free SFST practice for exam readiness.

SFST Legal Standards

SFST Mock Test covering Legal Standards. Online SFST Test practice with instant feedback.

SFST Observation Skills

Free SFST Quiz on Observation Skills. SFST Exam prep questions with detailed explanations.

SFST One Leg Stand

SFST Practice Questions for One Leg Stand. Build confidence for your SFST certification exam.

SFST Renewal and Professional Development

SFST Test Online for Renewal and Professional Development. Free practice with instant results and feedback.

SFST Test Administration

SFST Study Material on Test Administration. Prepare effectively with real exam-style questions.

SFST Training Requirements

Free SFST Test covering Training Requirements. Practice and track your SFST exam readiness.

SFST Walk and Turn

SFST Exam Questions covering Walk and Turn. Master SFST Test concepts for certification prep.

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SFST Flashcards

Quick review of SFST clues and procedures

👁️How many clues are in HGN?

The HGN SFST test has 6 total clues (3 per eye): Lack of Smooth Pursuit, Max Deviation, and Onset Prior to 45 Degrees.

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🚶What are the WAT Stages?

The Walk and Turn test has two stages: the Instruction Stage (divided attention) and the Walking Stage.

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🦵Clues for One Leg Stand?

There are 4 clues: Sways while balancing, Uses arms to balance, Hops, and Puts foot down (PUSH).

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📊HGN Accuracy Rate?

According to the San Diego Study, the HGN test is 88% accurate at detecting BAC above 0.08%.

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🔦Stimulus Distance?

The stimulus should be held approximately 12-15 inches from the subject's nose and slightly above eye level.

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📜WAT Clues to Fail?

Observing 2 or more clues on the Walk and Turn test indicates a BAC of 0.08% or higher with 79% reliability.

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SFST EXAM QUESTIONS QUIZ

SFST Exam Study Guide

The NHTSA SFST curriculum is broken down into specific modules. Understanding the mechanics of the Horizontal Gaze Nystagmus (HGN), Walk and Turn (WAT), and One Leg Stand (OLS) is critical for passing the SFST written test.

What is the SFST exam?	The Standardized Field Sobriety Testing (SFST) exam certifies law enforcement officers in the administration of the HGN, WAT, and OLS tests to detect impairment.
What does HGN SFST stand for?	HGN stands for Horizontal Gaze Nystagmus, which is the involuntary jerking of the eyes that becomes more pronounced when a person is impaired by alcohol or certain drugs.
Who administers the SFST training?	SFST training is administered by NHTSA-certified instructors at police academies, state patrol agencies, and law enforcement training centers.
Is the SFST test national?	Yes, the NHTSA SFST standards are recognized nationally, although individual states may have specific administrative rules or case law variations.

What is the SFST exam?

The Standardized Field Sobriety Testing (SFST) exam certifies law enforcement officers in the administration of the HGN, WAT, and OLS tests to detect impairment.

What does HGN SFST stand for?

HGN stands for Horizontal Gaze Nystagmus, which is the involuntary jerking of the eyes that becomes more pronounced when a person is impaired by alcohol or certain drugs.

Who administers the SFST training?

SFST training is administered by NHTSA-certified instructors at police academies, state patrol agencies, and law enforcement training centers.

Is the SFST test national?

Yes, the NHTSA SFST standards are recognized nationally, although individual states may have specific administrative rules or case law variations.

Topics: Real impairment detection
Questions: 2 Practical Apps

The most critical part of the SFST test is giving the instructions exactly as written in the NHTSA SFST manual. Deviating from the script can invalidate the test results in court.

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SFST Score Calculator

Total Scored Questions

150

How many questions did you answer correctly?

0105150

105 out of 150 correct

70%

Required to Pass: ~70% (Estimated)

Your Score: 105 correct✓PASS

Almost all sworn officers receive SFST certification for free as part of their employment training. Agencies also typically cover the cost of the SFST refresher course.

SFST (Standardized Field Sobriety Testing Certified) Test Guide - Standardized Field Sobriety Testing Certified exam preparation

FREE SFST PRACTICE QUESTIONS

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SFST Test Day Checklist

✓Valid Law Enforcement ID
✓Pen Light / Stimulus
✓Notepad for Clues
✓NHTSA SFST Manual
✓Comfortable Uniform
✓Review HGN Clues
✓Review WAT/OLS Demos
✓Practice Report Writing

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SFST Renewal Requirements

🔄

Refresher Every

2 Years

📝

Course Length

4-8 Hours

Regular SFST refresher training is crucial not just for certification, but for maintaining credibility during cross-examination in court.

📄SFST Practice Test Questions and Answers PDF

✅Pros

+Validates your knowledge and skills objectively
+Increases job market competitiveness
+Provides structured learning goals
+Networking opportunities with other certified professionals

❌Cons

−Study materials can be expensive
−Exam anxiety can affect performance
−Requires dedicated preparation time
−Retake fees apply if you don't pass

SFST Questions and Answers

About the Author

Captain Jennifer WalshBS Aerospace Engineering, FAA A&P, ATP

Commercial Pilot & FAA Certification Specialist

Embry-Riddle Aeronautical University

Captain Jennifer Walsh graduated with honors in Aerospace Engineering from Embry-Riddle Aeronautical University and holds FAA Airframe & Powerplant and Airline Transport Pilot certificates. With 11 years of commercial aviation experience and 6 years as a ground school instructor, she guides aviation mechanics and student pilots through FAA written exams and practical tests.