600 mm by 600 mm (24 in by 24 in) circular state highway shield, made to the specifications of the <a rel="nofollow" class="external text" href="http://mutcd.fhwa.dot.gov/SHSm/Guide.pdf">2004 edition of Standard Highway Signs</a>.  Uses the <a rel="nofollow" class="external text" href="http://www.triskele.com/fonts/index.html">Roadgeek fonts</a>. (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.)
<a href="https://en.wikipedia.org/wiki/Federal_Highway_Administration" class="extiw" title="w:Federal Highway Administration">w:Federal Highway Administration</a>
2013-12-01
<span class="int-own-work" lang="en">Own work</span>