Sorry I misspoke. I meant to say why didn't we choose vehicles that can take advantage of level boarding by not having a terrible low floor layout inside? Like our subway cars which don't have to make space in the passenger area for engines and other equipment jutting up from below the floor.

I apologize as I'm sure this was already discussed, but It's my understanding that every stop, even the ones at-grade, have platforms built for them. Why then did they design the entire Crosstown line to operate using low-floor vehicles rather than a line with level boarding? I ask because I...