One oft-cited California study predicts that within 20 years, 15 million American households will want homes within walking distance of mass transit. If that means living near rail, then many people will be disappointed. With only 2,900 light, heavy, and commuter rail stations currently on-line around the country, simple math tells us that meeting this level of transitoriented development demand would require wrapping dense communities averaging about 5,000 homes around each and every station.
