Transit Systems Visited
It's been a little while now with this thread - I added six new metros to my list (MARTA, LA Metro, Muni Metro, BART, Baltimore Metro, Washington Metro) this year. I could also make a case for the VTA (San Jose) light rail as well.
Washington was my favourite, followed closely by BART and Muni. Baltimore's Metro was hardly well-used, except in peak periods (but the north half of the LRT is a lovely route). MARTA was a quick jaunt. I have finally rode enough modern North American-style LRTs (LA, Baltimore, San Jose) for it to really hit home the difference between these and something like Transit City-style (whose closest relative in NA would be Muni Metro).
And I also calculated the total number of transit systems I have rode so far: 61 transit systems in 6 provinces, 8 states, 1 district, and 23 jurisdictions in Ontario. About half are bus-only operators, though, and one is a single-bus operator as well (Port Hope).
As for Metros:
Toronto
Montreal
Vancouver
(Ottawa)
New York (MTA, PATH)
Chicago
Atlanta
Los Angeles
San Francisco (Muni, BART)
Cleveland
Washington
Baltimore
(Buffalo)
(San Jose)
(Newark)
London
(Manchester)
(Sheffield)