The Japanese respect social order.
It is well known to line up when you get on the train.And we give priority to those who get off over those who get on.After the people who get off have finished getting off, the people who get on will get on in order.As a result, this is the most efficient and fastest.In this way, the confidential timetable of Japanese trains will not be disturbed.
I think this culture is a good culture.