This document discusses Wisconsin municipal OWI law and jurisdiction over OWI offenses. It provides an overview of municipal court jurisdiction over first offense OWIs as civil forfeitures. It also discusses limitations on municipal court jurisdiction if a valid prior conviction exists. The document outlines circuit court jurisdiction over first offense OWIs and contradictory appellate court opinions on jurisdiction if a prior conviction exists. It defines key terms related to OWI offenses like "operate," "motor vehicle," "highway," and premises held out for public use. It also discusses what constitutes being "under the influence" and prohibited alcohol concentrations.