Comment by aestra

Try asking an American what this picture means -

http://www.slate.com/content/dam/slate/archive/2010/03/1_123...

Most people would know that means "exit" but in true American fashion the United States uses a different sign - http://www.oneskilladay.com/wp-content/uploads/2013/05/Exit-...

I gotta say it took me a long time abroad to figure out what the green running man sign meant.