By David Schultz
The change would re-route a third of blue line trains along the yellow line bridge, crossing the Potomac River and up to Greenbelt along the green line. Three trains would also be added each peak travel hour between West Falls Church and Largo Town Center to relieve crowding on the orange line.
The change is meant to try and accommodate evolving Metro ridership patterns and prepare for service to Dulles International Airport.
It would mean more frequent service to about 15,000 riders and make better use of the yellow line bridge. However, thousands of riders traveling from stations south of the Pentagon on the blue line would have longer rides.