Media field sobriety tests (FSTs) are usually used by police officers DUI investigations in order to decide if a driver is drunk. Typically, they consist of a battery of 3-5 tools, for example walk-and in turn, one-leg stand, "nystagmus" ("follow the pencil with your eyes"), finger-to-nose, recitation of the alphabet, "Rohmberg" (eyes-closed-position-of-focus) and so on. The representative could solve personally if the person "failed", or you might choose after applying standardized Central "fresh" rating.
These DUI test have a feeling of reliability technique. Alas, however, they have no real basis in science and are ineffective in a drunk driving case.
First, it is important to know that the decision to arrest gains strength concrete only in the driver's seat, not before then. Why are given FSTs is that they are used to determine the cause of the crash. This is done simply to gather evidence and for no other reason.
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