When a person is stopped by a law enforcement officer for suspicion of having driven while under the influence (DUI) or intoxicated (DWI), the officer will often ask that the driver perform a series of “field sobriety tests.”  These tests were established in 1982 by the National Highway Traffic And Safety Administration (NHTSA) as a way to impose (in theory, at least) some measure of uniformity and consistency in determining whether a person has been driving under the influence.

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