English: 600 mm by 600 mm (24 in by 24 in) Interstate shield (metric version), made to the specifications of the 2004 edition of Standard Highway Signs (sign M1-1). Uses the Roadgeek 2005 fonts. (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.) Colors are from (Pantone Red 187 and Blue 294), converted to RGB by . The outside border has a width of 1 (1 mm) and a color of black so it shows up; in reality, signs have no outside border.