Sure, I'll grant that no one has consciously designed cities to ignore or adversely impact women.
However conscious choice isn't a requirement in order for potential discrimination to occur.
Since these women were able to suggest improvements to the transportation system it is easy to extrapolate that the transportation system was sub-optimal for their use beforehand. Therefore, one could factually state that, since the system was not optimal, the women were indeed "at a disadvantage" of some sort, although the magnitude of this disadvantage is not determined.
Like I said, I'm sure no one designed a city or any other public space with the intent of leaving out women, repressing women, causing women more discomfort, etc.
Lack of conscious causal behavior does not guarantee a fair impact.
If I gotta break the link down for you: if something you do impacts a group of people in an adverse manner, even if it's not intentional, it's still happening and it's still bad and, depending on the class of persons, can constitute racism, sexism, etc. This is not just my opinion. THIS IS YOUR COURT'S OPINION.