About The Division of Transportation System Information (TSI)
The Division of Transportation System Information (TSI) has a professional staff primarily made up of Planners, Engineers, Research Analysts, and Administrators. We collect, maintain, analyze, and disseminate information reflecting the characteristics of the State's public roads system. The Division is responsible for obtaining approvals of Federal and State highways statutory descriptions, and is responsible for obtaining approvals for the functional classifications of all California public roads. TSI provides general information for the Department related to the State transportation system's operation, condition, and performance. These efforts are accomplished through our three offices listed in the bottom of the left column, as well as in the chart below.
TSI Services Chart
