Standardized Field Sobriety Tests (SFST) were developed by the National Highway Transportation Safety Administration (NHTSA) in order to assist the officer in determining probable cause to arrest a driver for DUI (or in Michigan, OWI-Operating While Intoxicated) and to support giving the driver a preliminary breath test (PBT). There are an abundance of field sobriety tests that can be administered, like counting backwards, reciting the alphabet, touch your nose, etc. Only three tests has been "standardized" by the NHTSA.
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