New York Needs A 21st-century Transit System

"New York needs a 21st-century mass transit system. That means it needs to provide the additional capacity required to meet current service needs, and it needs to provide direct, speedy connections between the long list of population centers and travel destinations that are currently served poorly or not at all.This will require construction of three major additions to the region's mass transit network. The first and most important, the keystone of all else, is a new four-borough subway system, the foundation of which would be a new Second Avenue subway for Manhattan."

Thanks to transport-policy listserv