It is culture, but also a whole system of making it simple. There are markers to show where the doors will stop, and the train will actually stop there. So peo

It is culture, but also a whole system of making it simple. There are markers to show where the doors will stop, and the train will actually stop there. So people can line in advance in prediction of where the train stops. The markers are far enough from the border so people are nudged to stay within safe distance. Staff is dispatched on the platforms at rush hour to deal with people wondrop their stuff, need assistance, lost their way or take dangerous behaviors. France railways started some similar ideas (like having staff on the platforms at rush hour) with various level of success, but they don’t seem to be ready to invest enough to go all the way. Basically I think other countries’ railways just don’t care enough.