The Geographic Information System (GIS) CAMPO manages is a collection of transportation-related data undertaken collectively by CAMPO, Texas Department of Transportation (TxDOT), and member jurisdictions. All of the GIS data is stored in the ArcGIS shapefile format, while some are also available in KML for Google Earth. For those without commercial GIS software there is a free downloadable viewer available from ESRI. In addition there is a free GIS viewer from Quantum (see link at bottom of page). All shapefiles are in the coordinate system: State Plane Central Texas, NAD 1983, US Feet.