I'd also like to know why I always seem to end up on a bus with at least one screaming child, a phenomenon that makes me wonder why it is that Czech toddlers seem to be so uniformly well-behaved on public transit. (There was, to be sure, Samko, but Samko was a happy child.)
If there are answers anywhere to such Pittsburgh transit questions, they are likely to be found on the new blog Peak Direction, which covers Pittsburgh and other transit in loving detail. Other matters get mentioned, too. Check it out.