It’s a sign of the season – political campaigning and the posting of campaign signs. The Kansas Department of Transportation reminds the public that all political campaign signs or billboards are prohibited from being placed on state right of way. By law, all right of way on state highways is exclusively for public highway purposes. Only regulatory, guide signs and warning signs placed by KDOT are allowed on the 9,500-mile state highway system. KDOT has jurisdiction over all interstate, Kansas and U.S. routes.