Gateway Traveler Information System (GTIS) Reports Select Year 20172018 Overall GTIS Illinois – IDOT District 2 Illinois – IDOT District 8 Illinois – Lake County Illinois – Chicago Skyway Illinois – Traffic and Incident Management System / ISTHA Illinois – Traffic and Incident Management System / ISTHA (Test Segments) Illinois – Traffic Systems Center Illinois – Traffic Systems Center (Test Segments) Indiana – InDOT Indiana – Indiana Toll Road Minnesota – Intelligent Roadway Information System Wisconsin – WisDOT