3 ms·There may be seismic reasons.by khazhoux 9y agoThere may be seismic reasons.raldi 9y agohttps://www.tokyometro.jp/en/subwaymap/img/img_01.png https://www.tokyometro.jp/en/subwaymap/img/img_01.pngjpatokal 9y agoWhat's more, the subway is apparently one of the safest possible places to be if a big quake strikes.