1. That should be Metros (or ELs and Subways) of North America. Vancouver BC and Mexico City (and I think Chicago) have lines shown here that are mainly ELs (elevated metro lines). That said, great map.

    1. Literally (if you click it):
      For the pedantic rail enthusiasts, the definition of a subway used here is, with some caveats, “a network containing high capacity grade-separated passenger rail transit lines which run frequently, serve an urban core, and are underground or elevated for at least part of their downtown route.” For the rest of you, the definition is “an underground train in a city.”

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