Massachusetts Bay Transit Authority

Josh Barro provide examples galore of why the answer to that question isn't always yes—where costly rail investment has been to the detriment of existing transit. His column targets proposed projects, such as New York's LaGuardia Airport AirTrain.
Feb 11, 2015   New York Times - The Upshot
Boston recently shut down one of its busiest transit hubs, the Government Center T Station for over-due renovations above and below the ground. The station was originally built in 1898, and without a major renovation since the 1960s.
Mar 23, 2014   The Boston Globe