A blank <a href="//commons.wikimedia.org/wiki/Circle_signs" title="Circle signs">circular highway shield</a>. Based upon <a href="//commons.wikimedia.org/wiki/File:Circle_sign_0.svg" title="File:Circle sign 0.svg">Image:Circle_sign_0.svg</a> by <a href="//commons.wikimedia.org/w/index.php?title=User:SPUI&amp;action=edit&amp;redlink=1" class="new" title="User:SPUI (page does not exist)">User:SPUI</a>, edited by <a href="//commons.wikimedia.org/wiki/User:Scott5114" title="User:Scott5114">User:Scott5114</a> in <a href="https://en.wikipedia.org/wiki/Inkscape" class="extiw" title="w:Inkscape">w:Inkscape</a> 0.39.
No machine-readable author provided. <a href="//commons.wikimedia.org/wiki/User:Scott5114" title="User:Scott5114">Scott5114</a> assumed (based on copyright claims).
13 February 2006 (original upload date)
No machine-readable source provided. Own work assumed (based on copyright claims).