Wow Fact: Oshiya
As quoted from Amusing Planet, this subway will come every five minutes. However, during busy times, trains will be present every two to three minutes. That means, there will be 24 trains coming every hour.
That is a lot, and certainly can carry many passengers as well. But still the subway is fully loaded. Some people were crushed on the train door or window.
In order for the number of passengers to be transported can be doubled, then the station also employs "Oshiya".