Vector image of a 24 in by 25 in (600 mm by 635 mm) California State Route shield. Colors are from [1] (Pantone Green 342), converted to RGB by [2]. The outside border has a width of 1 (1/16 in) and a color of black so it shows up; in reality, signs have no outside border.
Made to the specifications of the 1971 Caltrans sign drawing (still in use). Uses the Roadgeek-2005 fonts by Michael D. Adams. (United States law does not permit the copyrighting of typeface designs, and the fonts are meant to be copies of a U.S. Government-produced work anyway.)
SPUI