Apparently, yes. Not because of a miracle, though. (via The Overhead Wire and Robert Thomson)
A report prepared by staffer Wenjing Pu finds that “overall, a modest reduction in traffic volumes led to a significant reduction in congestion and an even larger improvement in travel time reliability on freeways, and transit ridership notably declined for the week” of the papal visit to the District, highlighted by many events on Sept. 23 and 24.
Traffic flow before the Pope's visit and on the day of his visit
[image credit: TPB]