Old "Two-way Traffic" sign in Australia.
Government of Victoria
2012-11-13 20:27:30
<a rel="nofollow" class="external autonumber" href="http://www.vicroads.vic.gov.au/NR/rdonlyres/08DA9EB1-A2CE-4248-921E-16C2C9D80D61/0/schedule.pdf">[1]</a>