The "Silver Line" is a rapid transit line in the Washington, D.C. metropolitan area, part of the Washington Metropolitan Area Transit Authority (WMATA) system. It connects various locations in Loudoun County, Virginia to the existing Metro network, providing convenient access to the region's key areas, including Dulles International Airport. The Silver Line opened in stages, with the first phase debuting in 2014 and the second phase completed in 2022. It features modern stations equipped with amenities and is designed to reduce traffic congestion while promoting public transportation use in the growing suburbs of Northern Virginia.