シアトル・タコマ国際空港
The Satellite Transit System (STS) is an automated people mover (APM) system operating in the Seattle–Tacoma International Airport in SeaTac, Washington, United States. Originally opening in 1973, the STS system is the second oldest airport people mover system in the United States. The APM was designed to quickly transport passengers between the airport's Main Terminal and the North and South Satellites.