The Airport Transit System (ATS) is an automated people mover system at Chicago O'Hare International Airport that was built by Mécanique Aviation Traction and began its operation when?
Airport Transit System The Airport Transit System (ATS) is an automated people mover system at Chicago O'Hare International Airport. The 2.7 mi system was built by Matra at a cost of $127 million, and began its operation on May 6, 1993. It can accommodate up to 2,400 passengers per hour.
Air traffic control Air traffic control (ATC) is a service provided by ground-based air traffic controllers who direct aircraft on the ground and through controlled airspace, and can provide advisory services to aircraft in non-controlled airspace. The primary purpose of ATC worldwide is to prevent collisions, organize and expedite the flow of air traffic, and provide information and other support for pilots. In some countries, ATC plays a security or defensive role, or is operated by the military.