Hey MIA experts, how does the Sky train separate domestic and international arrivals? When we landed from an international flight we could take the train from station 4 to 3 to get to immigration. It said we had to get off, but how is that enforced given it is driverless? Also, how do domestic arrivals get from station 4 to the other stations? Are there separate tracks or trains to separate international arrivals from sterile pax?
The cars that are used to ferry passengers to passport control are separate from the cars used by the passengers in D to move about the concourse. There's really no where you could go other than passport control. Basically, one half of the train is cleared passengers, and the other half of the train is uncleared passengers and each station has two halves that are walled off from one another.