Bewegwijzering voor Schiphol
Signposts at Schiphol Airport served as calming beacons for nervous air passengers. For the new terminal designed by interior designer Kho Liang Ie (1927-1975), in 1967 Wissing devised a crystal-clear system of exceptional simplicity: text indicated the destination, arrows the direction, yellow stood for arrival and departure, everything else was green. Jan Hoogervorst developed the efficacious light boxes.