http://www.trippert.comTrippert : share and blog your trips120 http://www.trippert.com/article/90At a glance, many metros seem to be comparable in scale, but what separates New York from Baltimore is density: station-to-station distance, line overlap, and linkages. Most systems are ogranized as a hub with spokes; the two notable exceptions are New York and Mexicop City, both of which are more like nets. Sat, 03 June 2006 23:55:00 America/New_York