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:
Highways in Washington state with SR highlighted TL and NHPN. map of highways in Washington with Washington State Route highlighted in red This image was created using data from census gov html Census TIGER Shapefiles and fhwa dot gov The National Highway Planning Network as well as KML file created using Google Earth Own