TYSON'S CORNER, Va. (WUSA9) -- A big step for Metro's new Silver line which is currently the biggest transit construction project in the United States.
The commuter railroad has running test trains on the 11 miles of new track and stopping them at all the stations on a schedule.
That will continue until July 26 at noon when the line will be open for passengers for the first time.
The trains are being run to test signals in actual conditions and train drivers to run all the way from Largo in Maryland to the new Silver Line terminus station on Weihle Avenue in Reston.
The opening of the new line will mean some changes on the Blue Line and longer waiting times.
Some passengers say they may wait to see how the line works before getting on board.
Metro says, only about 10 percent of its regular ridership will be affected by changes on the Blue line.
The five new Silver line stations called McClean, Greensboro, Spring Hill, Tyson's and Wiehle Avenue, are just the first phase of the project for what local leaders hope will eventually be a complete transformation of the Tyson's corner area -- to a walkable residential and commercial center.
Fairfax County Board of Supervisors Chairman Sharon Bulova says they are already seeing local development around the Metro Stations and the addition of overhead walkways and sidewalks to make it more convenient for pedestrians.
The Silver line, which is expected to carry about 25,000 passengers a day, opens for the public on July 26.