People tend to check in during these times:
The Port Authority operates a 25-mile light rail system called "The T," which provides service from Downtown Pittsburgh's underground transit to a number of neighborhoods and suburbs south of the city on a surface light rail right-of-way.
Avoid using the elevators if at all possible- they smell strongly of urine (possibly human, possibly not).
Red line, look for a line of orange spray paint on the tracks. Stand there an the doors open right in front of you
While using the escalator, please, for the sake of Pete STANDERS ON THE RIGHT, WALKERS ON THE LEFT!!
Northbound trains depart 15 seconds before I arrive, regardless of when that is.
Check in BEFORE you go downstairs.