The Shape of Subways to Come

One of my favorite links: Subway systems of the world, presented at scale.

Check out the physical form of the subways in combination with public transit ridership data. What is one thing the highest ridership systems all seem to have in common (with the possible exceptions of Hong Kong and Beijing)? In rather unscientific terms, they basically look like hairballs. Many criss-crossing lines, fairly small overall geographic area, incredible stop density. Though transfers between lines (or modes or systems) are often thought of as a bad thing, high frequency service, good geographic coverage, and excellent information systems make up for it. I am especially impressed by the Seoul Metro route planning map.

Obviously the layout of the city above ground really impacts what goes on below ground. However, I think these maps show that "transit infill" can help with ridership on struggling systems. Combine the transport infrastructure with transit-oriented land development policies, and watch urban places revitalize. The Atlanta Beltline project is an excellent example of these concepts in tandem.