The Tokyo government is considering running the Toei Chikatetsu 24 hours a day, due to the increasing number of flights that will be coming into Haneda airport. Currently the subways shut down at 1am city wide. The Toei Subway system consists of the Asakusa, Mita, Shinjuku and O-edo lines. This new proposal may open up new doors of business and make Tokyo another city that never sleeps. It will also probably go over better with travelers whose only other option for leaving the airport would be by taxi, a 6,000 -10,000 yen($60-$100) fare.