India isn't the first country to try something like this. Last year Mexico City addressed public sexual harassment by debuting women-only buses marked with pink placards of course. And such harassment is so prevalent in Japan that there's even a word ("chikan") just for subway gropers. (And let's not forget that you don't have to be groped to be harassed; you might witness someone masturbating while you're trying to get to work on the subway!)
Knowing that you can travel in peace must be a relief for women who have been sexually harassed by strange men. Does this ever happen to you?