The state of Indiana punishes offenders in a first DUI (referred to as an OWI -- operating while intoxicated -- in Indiana) via both criminal penalties (jail time, fines) and administrative action (license suspension).
Indiana classifies the first violation of operating a motor vehicle (including a motorboat) while intoxicated (OVWI or OWI) as a misdemeanor with penalties varying depending on the specific class of misdemeanor.
A third DUI conviction in Indiana within ten years is a felony. In the Indiana Code, the phrase "Operating While Intoxicated" (OWI) is used to describe driving under the influence (DUI). People charged with a DUI/OWI face administrative penalties and criminal penalties.
The drinking age in Indiana is 21 and consumption of alcohol by anyone under 21 is illegal with no exceptions. Because underage drinkers cause a disproportionate number of alcohol-related auto fatalities, the standards are stricter and the penalties may be harsher for those under 21.