Currently MTA rules are that strollers "be folded before entering the bus and should remain folded for the duration of the trip". Try doing that while holding a baby and a few bags. Try doing that with twins! Many of us avoid taking the bus as a result. This is an accessibility issue and also a safety issue - for our children and for fellow passengers. Read below the numerous personal stories and excellent arguments from parents around NYC.
Many cities in the US (Boston, Chicago, L.A., San Francisco, Phoenix, Philadelphia) and worldwide (London, Paris, Toronto, Syndey) allow strollers on buses, with consideration of rushhours and how full the bus is, and always giving priority to wheelchairs.
Its time NYC allows us on the bus with kids remaining seated in strollers.
Parents and child minders - sign and make your voice heard.