30 in by 24 in (750 mm by 600 mm) Illinois Route shield, made to the specifications of the sign detail (sign M-I100). 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.) 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.