Chicago O’Hare Airport and many other international airports uses the DOT74′ pictograms developed by AIGA in 1974.
“This system of 50 symbol signs was designed for use at the crossroads of modern life: in airports and other transportation hubs and at large international events. Produced through a collaboration between the AIGA and the U.S. Department of Transportation, they are an example of how public-minded designers can address a universal communication need.” more
American Institute of Graphic Arts
They don’t appear to be using the departures icon. I think this was a good idea too because I don’t think the departures one from DOT74 is very good.
You’re right, it’s a bit better.