The state of Kentucky imposes both criminal (jail time) and administrative (license suspension) penalties for first DUI in Kentucky, as well as enhanced penalties for offenses involving aggravating factors.
Kentucky, like the rest of the nation, has a "per se" measurement for driving under the influence (DUI): a blood alcohol content (BAC) of .08. For drivers under the age of 21, the BAC is set even lower at .02.
In Kentucky, as in all states, it's a crime to operate a vehicle with a blood alcohol content of .08% or more. If arrested and convicted for this crime, judges typically apply a set of minimum and maximum sentencing guidelines. When determining the sentence, judges and prosecutors commonly weigh mitigating and aggravating factors.
Sobriety checkpoints are legal in Kentucky (see Kinslow v. Commonwealth, 660 S.W.2d 677 (Ky. 1984)). These checkpoints (also referred to as "mobile checkpoints" or "roadblocks") are police traffic stops that are not tied to any specific or individual suspicions.