600 mm by 300 mm (24 in by 12 in) begin plate, made to the specifications of the <a rel="nofollow" class="external text" href="http://mutcd.fhwa.dot.gov/shse/shs_2004_2012_sup.pdf">2012 supplemental to the 2004 edition of Standard Highway Signs</a> (sign M4-14).
<a href="//commons.wikimedia.org/wiki/User:Fredddie" title="User:Fredddie">Fredddie</a>
2021-07-21
<span class="int-own-work" lang="en">Own work</span>