An Oklahoma State Highway 77S shield, made to the specifications of the
sign detail
. 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.
This image of
simple geometry
is
ineligible for
copyright
and therefore in the
public domain
, because it consists entirely of information that is common property and contains no original authorship.