It is getting more and more difficult to fly. For example in Zurich.

Abflugtafel im Flughafen Z├╝rich
Departure screen at the airport Zurich.

Red means: Go to gate. Green means: Boarding. Funny. Imagine you are in a hurry. But not yet at the gate. Then you better start running. Until the face is red. Because you see green. And walk normally if you see red. Right?