What does a performance of two or more clues during a walk and turn test indicate?

The performance of two or more clues during a walk and turn test is indicative of a Blood Alcohol Concentration (BAC) of 0.08 or greater. This standardized field sobriety test is specifically designed to assess a person's ability to perform divided attention tasks, which can deteriorate with alcohol consumption. Each clue observed during the test—such as losing balance, making incorrect turns, or failing to take the correct number of steps—reflects impairment that typically corresponds with higher levels of intoxication.

Research and guidelines established for field sobriety testing suggest that the presence of multiple clues during this test strongly correlates with a BAC above the legal limit of 0.08, which is the threshold for DUI/DWI enforcement in many jurisdictions. Thus, the performance on this test serves as a significant indicator of a person's level of impairment due to alcohol consumption, making it a reliable predictor of legal intoxication.