Category Archives: Field Tests (SFSTs)

Information on Standardized Field Sobriety Testing.

What Is The One Leg Stand Test?

THE ONE LEG STAND TEST In this test, the suspect is instructed to stand with one foot approximately six inches off the ground and count aloud by thousands (One thousand-one, one thousand-two, etc.) until told to put the foot down. The officer times the subject for 30 seconds. The officer looks for four indicators of…
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Don’t Speak English? The Standardized Field Sobriety Tests Are Unfair!

If you have a client who does not speak english (or "cop english"), or if you have a client that does not hear well, they should not be considered impaired if they cannot follow the officer's instructions during the standardized field sobriety tests. The National Sobriety Testing Resource Center has put out a study, Impediments to…
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Lack Of Training Dooms HGN Test

According to their own manual, the Horizontal Gaze Nystagmus (hereinafter HGN Test) is the most reliable of the three standardized field sobriety tests.  The police are trained that it is 77% accurate at detecting subjects at or above a .10% blood alcohol concentration.  But that is not the whole story. Officers are not told that…
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Tired or Drunk? Field Tests Cannot Distinguish Between The Two

Field Tests Are Not Fair If You Are Tired! Imagine yourself driving home late at night after a long day at work. You have been putting in long hours to finish a project. Your eyes are bloodshot from looking at a screen all day and you need a shower.  Your wife calls and you fumble…
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Alcohol On Your Breath? So What!

Have we reached a point where the mere presence of alcohol on the breath is enough to place a person under arrest?  We ask this question because the "odor of an alcoholic beverage" is the first and most relied upon clue an officer notes in his or her report.  Not only does it determine that…
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