This research expands on a 2005 study that examined how the addition of bicycling facilities in the 1990s influenced commuting rates in the Twin Cities. The researchers applied the same methodology used in the 2005 study to six other cities that had also added bicycling facilities in the 1990s to see if the results would be similar to those of the earlier study and conclude that the "build it and they will come theory" is not universally applicable.