How many cues must be indicated in the walk and turn test to suggest a BAC above 0.08%?

In the walk and turn test, a driver is assessed for cues that may indicate impairment. The correct threshold for suggesting a blood alcohol concentration (BAC) above 0.08% is identified as two or more cues. This benchmark is derived from standardized field sobriety test protocols that evaluate physical and cognitive capabilities, which can be affected by alcohol consumption.

When a participant exhibits two or more cues during the walk and turn test, it demonstrates a noticeable level of impairment, affecting balance, coordination, and attention. These cues can include losing balance, starting too soon, stopping while walking, or failing to turn correctly. This specific criterion of two or more cues is significant in the assessment, as it aligns with research and guidelines established for detecting alcohol-related impairment.

In contrast, indicating fewer than two cues would not provide sufficient evidence of impairment based on the established thresholds. Therefore, identifying two or more cues serves as a reliable indicator of a higher level of intoxication, supporting law enforcement's decision-making process during DUI investigations.