1. It is illegal for a driver age 21 or older to operate a vehicle with a BAC of ____ or higher.
- 0.05%
- 0.08%
- 0.10%
Explanation: Kentucky's legal limit is a BAC of 0.08% (0.02% for drivers under 21). A BAC of 0.15% or higher is aggravated DUI with doubled minimum jail time.