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How accurate are field sobriety tests?


A: The answer is not very accurate at all. Field Sobriety Tests (FSTs) are largely subjective. In other words, different police officers might judge the same person's performance differently. And the reality is, if the police officer asks you to perform a field sobriety test, the officer has probably already decided to arrest you. This means that the officer is using the FST as a way of proving that you're drunk, not determining whether or not you are. (For a more detailed discussion of the accuracy of field sobriety tests, see the article "Are Field Sobriety Tests Accurate?")