There is serious talk in the Tokyo Metropolitan Government of running the city managed subway systems Toei Chikatetsu（都営地下鉄) 24 hours a day when Haneda Airport opens to more international flights later this year. You might think of Tokyo as the city that never sleeps but in fact all public transportation stops around 1 am. [...]
24-Hour Tokyo: Tokyo Government To Run Subway Line All Night?!! Scoop!