I frequently take the bus to and from campus (from East Liberty to Oakland).
The Port Authority bus is usually reliable but I've experienced several instances of drivers not stopping for me.
I typically take the Pittsburgh Port Authority buses to and from campus, from my apartment in East Liberty to the University of Pittsburgh in Oakland. I primarily use the 71D and it is a fairly reliable and fast trip. It usually takes me a total of 15 minutes from door to door. However, the last time I was taking the bus home from campus, I was the only person at the bus stop, and despite waving to the bus driver, he blew past the stop. This has happened to me a handful of times in the past at the same stop in Oakland, and it is very disappointing to have to wait another 15 minutes for the next bus to come.