The sign in question is the bottom left one on here, called "priority road":
http://rmv.hqusareur.army.mil/drivrman/ss1903412.htm
It does indeed mean 50 kmh/h.
I'll also second everybody about the left/right lane... Unless you're flying, stay in the right lane
HTSC
Originally Posted by
Aviatrix
The speed limit in towns and villages is 50 kph unless otherwise indicated. But... there is NO 50 kph sign when you enter a town or village - just a square dark yellow sign displaying the name of the town or village you are entering.
This dark yellow sign doubles up as a speed limit sign
It's very very easy to get caught out by this if you're not used to it.
When you leave town there is another yellow sign, with the name crossed out. This doubles up as an "end of 50 kph speed limit" sign.