The goal of the Gateway Green Light program is to reduce travel times, delays, fuel consumption, greenhouse gas emissions and incidents within St. Charles County through the continued deployment of a Regional Arterial Management System. The program is a cooperative multi-jurisdictional effort to better manage and coordinate travel on both state routes and local arterials through St. Charles County. Each phase builds upon the previous expanding the Intelligent Transportation System (ITS) infrastructure throughout the County to provide a seamless multi-jurisdictional transportation network. Please click the links provided to view information on these projects.