In Florida, a person can be arrested for a DUI if their blood alcohol concentration (BAC) is .08% or higher. A DUI, or driving under the influence, is a drunk driving conviction where the BAC is above the state legal alcohol limit, rendering the driver legally impaired. The legal limit in Florida is as follows: Standard, non-commercial driver's: .08% BAC Commercial driver's: .04% BAC Drivers under 21: .02% BAC Penalties, Fines, & Suspension Florida DUI & DWI Penalties, Fines, & Suspension Penalty Minimum Penalty Maximum