Here’s a subtle example of social marketing I noticed at bus stops in Buenos Aires.
Translation: “Build an orderly line without disrupting the pedestrian traffic.”
This notice has obviously been around for a while given the shape it’s in.
I did experience some pretty odd lining up though: We took the local bus from the international airport in Buenos Aires to downtown. (OK, that wasn’t well researched in that it took over 2.5 hours but it did only cost $2 each. Anyways.) As people waited for the bus at the airport they did form a line: a straight line heading half way across the street impeding car traffic potentially.