I think it's hard to say things are fine when there's still huge gender disparities, in DC area it's something like 2:1
> in DC area it's something like 2:1
That's not true.
Source: https://rosap.ntl.bts.gov/view/dot/24356/dot_24356_DS1.pdf?
And IMO you can't call a mode of transportation "fine" when large swathes of the population don't feel safe or comfortable using it (this comes up a lot when I talk to female friends about bus/metro usage too)
That study is over a decade old though. And I would think that there's too many confounding variables at play there. IMO the biggest confounder is "society issues" that make women feel less safe in general in public spaces. In my local neck of the US, I pretty much never see solo women eating outside at night, vs solo men and mixed groups.