According to original research, the One-Leg Stand can determine a suspect's BAC is above or below 0.10 what percent of the time?

The One-Leg Stand test is designed to assess a suspect's balance and coordination, which are often impaired when under the influence of alcohol. Original research indicates that this test can effectively determine whether a suspect's Blood Alcohol Content (BAC) is above or below 0.10 approximately 65% of the time. This statistic highlights the reliability of the One-Leg Stand as a tool for law enforcement when assessing intoxication levels. The percentage reflects the test's ability to identify impairment; when individuals have a BAC above this threshold, their physical control tends to deteriorate, making it challenging for them to successfully maintain balance on one leg for the required duration. This makes the One-Leg Stand a valuable component of the Standardized Field Sobriety Test protocol.