[JBorrow]

My point was that there’s a stop sign every block, so they need to stop anyway.

[jjk166]

Quite a big difference between stopping at a stop sign and a bus stop. Also there isn't a stop sign every block, on the larger streets that most of the busses run on there are lights at the intersections. While Philly does a pretty poor job coordinating its traffic lights, that's a separate issue.