This line shapefile represents airport runways in California. These are runways for which the Department of Transportation (Caltrans) HQ Aeronautics maintains information. These data were created in May 2006 and updated in April 2011. This layer is part of a collection of GIS data created by the California Department of Transportation (Caltrans).This dataset is intended for researchers, students, and policy makers for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data.