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What is the accuracy percentage of the One Leg Stand test according to the San Diego study?

  1. 79%

  2. 83%

  3. 88%

  4. 75%

The correct answer is: 83%

The One Leg Stand test is a tool used in field sobriety testing to assess a person's level of impairment by alcohol. According to the San Diego study, this test demonstrated an accuracy percentage of 83% in determining whether an individual was impaired. An accuracy rate of 83% implies that the test was able to correctly identify individuals who were impaired versus those who were not in a substantial majority of cases. This level of accuracy is significant because it provides law enforcement with a reliable method to evaluate a driver's sobriety under field conditions. Understanding this percentage is critical for both law enforcement officers and those in training, as it helps reinforce the importance of using standardized tests to form a basis for determining impairment and making informed decisions during traffic stops.