This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
California State Route .svg California State Route in the northern Bay Area With unconstructed unbuildable sections in purple Email me if you would like copy of the GIS data created for the highways User NE Sources bts gov BTS North American Transportation Atlas Data dot ca gov xls Caltrans State Truck Route List XLS file dot