In her book, When Driving Is Not An Option, Anna Zivarts covers some of the reasons transit is so bad for the people who need it most.

"There are people who are going around with a checklist of the
ADA requirements, but you don't have people with different disabilities in the room when you're designing these things," disability advocate Erica Jones explains. "Part of that problem is the economic system we have requires full-time availability from people to have a job at all. And so, you find that if you can't work forty hours or you can't work thirty hours, you might as well be able to work zero hours. And so, a lot of the disabled people who should be in the room when you're designing these things are people who only have the energy for ten or fifteen hours a week of work, and so those people have zero chance of getting into the room.