I don't see a problem with this as long as the Haredim do not force their choices on everybody else. For example, if they forced every bus route going through their neighborhood to be sexually segregated, that would be wrong. But I don't think they are doing that. I live in Brooklyn and I don't see the B13 or B16 busses being segregated.
Two security personnel killed by mine in southeast Turkey (Reuters)
from the article: Segregation of the sexes spreads among Orthodox Jews