The usual note about the definition of a "subway" applies. Having all of BART classified as "subway" but not RER makes the term meaningless. Also, the maps wer

The usual note about the definition of a "subway" applies. Having all of BART classified as "subway" but not RER makes the term meaningless. Also, the maps were created in 2004 and so are out of date for a number of cities (Montreal and Vancouver, off the top of my head).