[1] It is built underground and serves landside traffic, unlike the newer Skyway, which is elevated and operates airside.

Like their Disney counterparts, the trains are completely unpowered, relying on linear induction motors in the track for propulsion.

[2] Platform screen doors at each station have a special mechanism unlocking the trains' doors, and on-train station announcements and audible warning messages are provided by a trackside audio system through openings in the tops of the vehicle car-bodies.

Eight three-car trains are used on the system, of which six operate at any single time with three-minute headways at speeds of up to 15 miles per hour (24 km/h).

They stop at eight stations in a circuit serving every terminal and the Houston Airport Hotel, for a round-trip time of 18 minutes.