Nebraska state highway route marker
<a href="//commons.wikimedia.org/wiki/User:Dough4872" title="User:Dough4872">Dough4872</a>, originally by Scott Onson
<a rel="nofollow" class="external free" href="http://www.nebraskatransportation.org/traffeng/sos/2011-NE-Supplement-to-MUTCD.pdf">http://www.nebraskatransportation.org/traffeng/sos/2011-NE-Supplement-to-MUTCD.pdf</a>