Wisconsin requires all of its drivers to carry liability and uninsured motorist (UM) coverage. According to a study by the Insurance Research Council, as many as 15% of Wisconsin drivers were still uninsured as of 2007. Major insurance companies have offices in Milwaukee, Madison, Green Bay, and Kenosha. For more information on auto insurance requirements in Wisconsin, contact the Office of the Insurance Commissioner (http://oci.wi.gov/oci_home.htm).