http://wisconsindot.gov/Pages/dmv/agri-eq-veh/ioh.aspx
State of Wisconsin, Department of Transportation
Implements of Husbandry (IoH)
http://wisconsindot.gov/Pages/dmv/agri-eq-veh/ioh.aspx
Wisconsin has lighting and marking requirements for all Implements of Husbandry. As of November 1, 2015, self-propelled IoH and farm equipment exceeding 12 feet wide or that extend over the center of the roadway have specific lighting and marking requirements. This is to ensure the safety of IoH operators and the other traffic on the road.
To read more on Width, Height, Length, Weight, Trailering, Lights and Marking as well as other updates/changes in IoH, visit the Department of Transportation’s website.