The decision to look at how men and women used public transit wasn't a shot in the dark. It was part of a project aimed at taking gender into account in public policy. In Vienna, this is called gender mainstreaming. This article has some interesting implications. It's easier to change the urban landscape and transportation networks NOW, rather than wait for men to share equally in child and elder care (NOTE: I'm just reflecting the stats and studies used in the article).
However, I wouldn't be surprised if a greater merging of gender roles comes about as an unexpected consequence of the changes in urban landscape and transportation.