CLUES: * Lack of Smooth Pursuit (Approximately 2 seconds out; 2 seconds back over each eye) * Distinct and Sustained Nystagmus @Maximum Deviation (Hold for a minimum of 4 seconds) * Onset of Nystagmus Prior to 45 degrees (Move at a speed of approx. 4 seconds to reach a 45 degree angle) LEF TRIGH ☐ ☐ ☐ ☐ ☐ ☐

Standardized FST Clues 1. Horizontal Gaze Nystagmus (HGN); Six clues, three for each eye. There are no specific clues for vertical nystagmus. Clues: 1. Lack of smooth pursuit 2. Distinct and sustained nystagmus and maximum deviation 3. Angle of onset prior to 45 degrees 2. Walk and Turn (WAT); (8 total clues, 2 in instruction phase, 6 in ...

DWI Detection and Standardized Field Sobriety Test (SFST) Participant Manual. PDF, 86.47 MB. DWI Detection and Standardized Field Sobriety Test (SFST) Instructor Guide REFR… PDF, 25.4 MB. DWI Detection and Standardized Field Sobriety Test (SFST) Participant Manual RE… PDF, 24.96 MB. PowerPoint Presentations: Main Training

B. Clues (1) Lack of Smooth Pursuit. (x2) (2) Distinct and Sustained Nystagmus at Maximum Deviation. (x2) (3) Nystagmus prior to 45 degrees. (x2) Accuracy: 4 or more of the 6 validated clues indicate 88% accuracy at a .08% BAC.

Oct 16, 2024 · For many years law enforcement officers have utilized field sobriety tests to determine the impairment of a person's driving due to alcohol influence. The performance of the person on those field sobriety tests was used by the officer to develop probable cause for arrest and as evidence in court.

SFST PROCEDURES, Session 8, 2018 NHTSA Participant Manual – Rev. 02/18 2018 © Cleveland, Ohio - Mark Gardner, 1-800-OHIO-DUI (800-644-6384) & Joseph Hada, (440) 413-6949 HORIZONTAL GAZE NYSTAGMUS (HGN) I. TEST CONDITIONS (8-83/369) A. Wind, dust, etc. (irritating subject’s eyes)

STANDARDIZED FIELD SOBRIETY TESTING PROCEDURES HORIZONTAL GAZE NYSTAGMUS INSTRUCTIONS 1. Please remove your glasses (if worn). 2. Put your feet together, hands at your side. Keep your head still and look at and follow this stimulus with your eyes only. 3. Keep looking at the stimulus until told the test is over. 4. Do not move your head. 5.

SFST Field Notes ILLINOIS STATE POLICE SFST Field Notes Walk & Turn Clues • Cannot keep balance while listening to instructions (feet must break apart) • Starts too soon (only after told not to start) • Stops walking (pauses to regain balance) • Does …

SFST SCORING SHEET (CHECK ALL THAT APPLY) Horizontal Gaze Nystagmus Are you wearing glasses or contacts? I’m going to check your eyes. Stand with your feet together, with your hands by . your side. Follow the stimulus with your eyes, but do not move your head. Focus on the stimulus until I tell you stop.

Mar 19, 2018 · Here is a handy guide to what SFST clues an officer is looking for. The notation next to the SFST clue is where the explanation can be found in the 2015 NHTSA Student Manual, the training book used by every police officer in the country.