It shouldn't even be on the list because the line is far too small - it only has 3 stops actually in the city of Pittsburgh, and extends to a pointless end in Library, PA. And it completely misses the northern area of Pittsburgh.
And I have been to and used Portland, NYC, Chicago, Boston, and even Philadelphia's light rail system. All of them certainly smoke the unmitigated disaster of the public transportation of the Port Authority.
"If the code and the comments disagree, then both are probably wrong." -- Norm Schryer