Using Tokyo’s subway system should be easier for English-speaking visitors now that the Teito Rapid Transit Authority, which operates 8 of the 12 Tokyo subway lines, has changed its name to Tokyo Metro Company and made the system more friendly to foreigners. The subway lines are now marked with a letter of the alphabet, the stations are all numbered in sequence, and each train is equipped with an automatic P.A. system to announce the station names as the trains arrive. The changes are part of a “Welcome to Japan” tourism campaign launched last year.