San Francisco, the “City by the Bay,” is the mass transit epicenter of California. S.F. is in a category all its own, truly exemplary where Golden State-based mass transit is concerned. It is also headquarters for corporate car- or ride-sharing giants Uber and Lyft.
S.F. mass transit runs the gamut. There is everything from BART (the Bay Area Rapid Transit District-run heavy rail passenger service) and SF Muni (the San Francisco Municipal Transportation Agency – providing both bus and rail passenger service) to Caltrain (the commuter train operator on the San Francisco peninsula and beyond) and corporation-deployed shuttle services as an
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