What the signs and symbols at the airport mean

Also interesting reads on the origin (Netherlands) and the designers (Kho Liang le and Benno Wissing) of the nowadays internationally recognized airport signage symbols:

https://segd.org/airport-wayfinding-and-graphics (for more photos use right arrow)

https://www.rijksmuseum.nl/en/collection/NG-C-2012-11-1

http://www.nytimes.com/2012/10/22/arts/22iht-design22.html?p...