ITS Benefits Database entries are drawn primarily from publicly available sources such as ITS evaluation studies, research syntheses, journal articles and conference papers. The U.S. DOT National Transportation Library, state and local agency reports, Transportation Research Board’s Transportation Research Information Services (TRIS), and conference proceedings are major sources for the documents reviewed for collection of benefits information. Correspondence with evaluators or additional web-based project content occasionally supplements information provided in these written documents. Each database entry provides links to relevant source documentation available online.