Seattle-Tacoma Airport/USA
The main terminal building and one satellite terminal serve domestic traffic, while the other satellite terminal is exclusively for international flights. An eight-storey parking garage for approximately 9,000 cars is located in front of the airport complex. A sophisticated underground transit system, considered the most advanced in the world, connects the individual buildings and handles a volume of 240 passengers per minute. Within the next nine years, it will expand from the current nine to 28 computer-controlled trains, each with a capacity of 106 passengers. These trains will run on concrete tracks in tunnels, serving a total of six stations every 100 seconds during the day and on demand at night.
