United States:
Boston T
New York City Subway
PATH
JFK AirTrain
EWR AirTrain
Washington Metro
San Francisco BART
UK:
London Underground
Heathrow Express
China
Xi'An Metro
Beijing Metro
Beijing Airport Express
Shanghai Metro
Shanghai Maglev
Hong Kong MTR
Hong Kong Airport Express
Chongqing Metro
Singapore:
Singapore MRT
Italy:
Rome Metro
Milan Metro
Florence Tramway
Germany:
Berlin U-Bahn and S-Bahn
Munich S-Bahn and U-Bahn
France:
Paris Metro
RER Ile-de-France
Europe:
Budapest Subway
Athens Metro
Prague Metro
Brussels Metro
Amsterdam Tram
Basel Tram
Korea:
Seoul Metro
Seoul AREX
Japan:
Tokyo Metro/Toei Subway
Tokyo Monorail