What does the Airport Transportation System (ATS) connect at O'Hare?

The Airport Transportation System (ATS) at O'Hare International Airport serves an essential function by connecting multiple key areas of the airport. Specifically, it links Terminals 1, 2, 3, and 5, as well as long-term parking facilities. This connectivity is crucial for passengers needing to transfer between terminals efficiently, as well as providing access to parking options near the terminals.

The system enhances the overall travel experience by offering a reliable, frequent mode of transportation, allowing passengers and airport staff to move swiftly across the airport grounds without the need for personal vehicles. This comprehensive coverage ensures that travelers can easily reach their flights, check-in, or access amenities located in different terminal buildings.

In contrast, the other choices are limited in scope, as they either focus solely on subsets of the terminals or aspects of the transportation network that do not represent the full connectivity provided by the ATS.