The Great Subways of North America

DisneyWorld monorail?  Sorry, that is NOT a subway system.  How could you leave out Toronto, Vancouver or even smaller, but good systems like Cleveland, Baltimore, Miami?  What about extensive light rail systems like those found in Portland, Dallas, Denver, San Diego, Edmonton, Calgary...?

And, responding to one of the postings, "Ridership on all systems never meets anticipated level"...I would say the reverse is usually true - levels of service hardly ever meet demand.  Public transportation use has risen considerably in the last few years.

Another note - 24-hour service exists in New York, on the Philadelphia area Lindenwold line and on the Red & Blue lines in Chicago. Other cities either run night bus lines (San Francisco, Chicago) or just close up shop altogether in the early morning (Boston).

And, finally, the only systems that I know of that have both "express" and "local" services, with separate tracks, are New York City; Philadelphia (on both the Broad Street line AND the Market-Frankford line, where trolleys make certain stops that the M-F trains skip); and also on the north-side Chicago elevated (Brown/Red/Purple trains). I think the Norristown line in Philadelphia may make some "express" runs, but I'm not certain and the same may be the case on other systems.  If a train runs "express" in Boston, to make up time on a schedule, for example, it runs on the same tracks and just doesn't stop at certain stations.