8. Compare the BAC that represents the legal limit for DUI with the BAC at which driving is first impaired.

The legal limit for DUI (Driving Under the Influence) varies by jurisdiction but is typically around 0.08% blood alcohol concentration (BAC). However, impairment can begin at BAC levels as low as 0.02%, with noticeable effects on coordination, judgment, and reaction time. Therefore, the legal limit for DUI is significantly higher than the BAC at which driving is first impaired, indicating that impairment can occur well below the legal limit.