💯 SFST Practice Test 2026 — Free Exam Questions

(SFST) Standardized Field Sobriety Testing Certified Practice Test

SFST Practice Test : Free Exam Questions & Study Guide

The SFST (Standardized Field Sobriety Testing) battery is a series of three psychophysical tests validated by NHTSA to detect impairment in drivers. Mastering these protocols is essential for law enforcement officers to effectively identify DUI suspects and provide admissible courtroom testimony. Our free resources cover the SFST test procedures, scoring criteria, and legal standards.

Whether you are a police academy recruit or an experienced officer seeking recertification, our SFST practice test questions will help you retain critical knowledge. We cover the Horizontal Gaze Nystagmus (HGN), Walk and Turn (WAT), and One Leg Stand (OLS) tests in detail, ensuring you are prepared for both the written exam and practical applications.

⏱️

24h

Course Length

📝

80%

Passing Score

✅

Core Tests

💵

$0-$600

Exam 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 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 Alcohol Influence and Physiological E...

SFST Exam Questions covering Alcohol Influence and Physiological Effects. Master SFST Test concepts for certification prep.

SFST Court Testimony

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

SFST Documentation

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

SFST Evaluation Factors

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

SFST HGN Test

SFST Questions and Answers on HGN Test. Free SFST practice for exam readiness.

SFST Legal and Ethical Considerations

SFST Mock Test covering Legal and Ethical Considerations. Online SFST Test practice with instant feedback.

SFST Legal Standards

Free SFST Quiz on Legal Standards. SFST Exam prep questions with detailed explanations.

SFST Observation Skills

SFST Practice Questions for Observation Skills. Build confidence for your SFST certification exam.

SFST One Leg Stand

SFST Test Online for One Leg Stand. Free practice with instant results and feedback.

SFST Renewal and Professional Development

SFST Study Material on Renewal and Professional Development. Prepare effectively with real exam-style questions.

SFST Test Administration

Free SFST Test covering Test Administration. Practice and track your SFST exam readiness.

SFST Training Requirements

SFST Exam Questions covering Training Requirements. Master SFST Test concepts for certification prep.

SFST Walk and Turn

Free SFST Practice Test featuring Walk and Turn. Improve your SFST Exam score with mock test prep.

FREE SFST PRACTICE TEST

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.

🎯 🚶What are the WAT Stages?

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

💡 🦵Clues for One Leg Stand?

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

🔑 📊HGN Accuracy Rate?

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

📝 🔦Stimulus Distance?

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

⭐ 📜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.

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.

📚 SFST Basics

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.

📄 SFST Format

How many clues are in SFST tests?: There are 6 clues for HGN, 8 clues for Walk and Turn, and 4 clues for One Leg Stand. Finding a specific number of clues indicates impairment.
What is the SFST practical exam?: The practical exam requires officers to demonstrate the correct administration of all three tests on a live subject or volunteer in front of an instructor.
How long is the SFST course?: The standard NHTSA SFST practitioner course is 24 hours of classroom and practical instruction, usually spread over 3 days.
What is an SFST wet lab?: A wet lab is a controlled training session where volunteers consume alcohol to specific BAC levels so officers can practice administering tests on actual impaired subjects.

📅 SFST Registration

How do I register for SFST training?: Registration is typically handled through your law enforcement agency's training coordinator or the state POST academy.
What are the prerequisites for SFST?: You must generally be a sworn law enforcement officer or a recruit in a police academy to take the official SFST certification course.
Is there an SFST refresher course?: Yes, NHTSA recommends an SFST Refresher Course (usually 4-8 hours) every two years to maintain proficiency and certification.
Can civilians take SFST training?: Generally no, but some defense attorneys and toxicologists may take modified courses to understand the tests for legal defense purposes.

📊 SFST Results

What is the passing score for SFST?: The written exam typically requires a passing score of 80% or higher. Proficiency exams are pass/fail based on instructor evaluation.
What is the San Diego study?: The San Diego Field Validation Study (1998) is the primary research that established the accuracy rates (HGN 88%, WAT 79%, OLS 83%) for the SFST battery.
Do SFST results expire?: While the initial certification doesn't "expire" in some states, failure to take an SFST refresher course can weaken an officer's credibility in court.
How are SFST clues scored?: Clues are scored cumulatively. For example, 4 or more clues on HGN indicates a high probability of a BAC above 0.08%.

💡 SFST Tips

How to pass the SFST written test?: Memorize the specific administrative instructions and the exact number of clues for each test. Know the validation study percentages.
What is the hardest SFST test?: The HGN test is often considered the most technical to administer correctly due to the precise timing and positioning of the stimulus.
Do SFST instructors get paid more?: Becoming an SFST instructor can lead to specialized assignments (DUI Task Force) or overtime opportunities teaching at academies, increasing overall pay.
What is the biggest SFST mistake?: The most common mistake is deviating from the standardized instructions or failing to properly demonstrate the test to the suspect.

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.

START SFST REVIEWER QUIZ

SFST Score Calculator

Total Scored Questions

150

Estimated score calculation

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.

FREE SFST PRACTICE QUESTIONS START SFST CERTIFICATION PRACTICE

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

Ready to Pass Your SFST Exam?

Join thousands of officers who have used our free SFST practice test questions to master the NHTSA standards and ace their certification.

SFST Renewal Requirements

To maintain SFST certification, officers must demonstrate continued proficiency. While NHTSA guidelines suggest a refresher every two years, state POST boards set the specific 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.

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

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.

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