Double stroller can be a lot to handle on the busses but so can a single stroller unless you get unbrella strollers which won't allow your 2yrs to lay down. Our family travels with 4 double strollers for all of our families childern
My sister Tina's childern 5&3, Kristie's 7,5,2,9month old, Mine 2yrold and an extra seat for Brother that's on the way.