It's not too much related to the "culture of the whole" - it works amazingly well in Vienna too, it's considered really rude to not queue up at the sides of the

It's not too much related to the "culture of the whole" - it works amazingly well in Vienna too, it's considered really rude to not queue up at the sides of the door in the subway/tram, or to stand left on the escalator - and mostly people really respect it.