projects include purchasing new rail cars, rehabilitating three rail lines, replacing three bus garages, implementation of NTSB safety recommendations and purchasing new track maintenance equipment and overhauling Metrorail station elevators and escalators. Metrorail's newest line was given the colour silver. The Silver Line's Phase I extended service to the Tysons Corner area of Virginia, with further extension planned to Ashburn, Virginia. Phase I through Tysons Corner to Reston (at the Wiehle–Reston East station) opened July 26, 2014, while Phase II to Ashburn, Virginia opened on November 15, 2022. Phase II includes a connection to Dulles International Airport. The Silver Line is financed through toll increases on the Dulles Toll Road as well as a $900 million federal grant and a special taxing district on adjacent commercial properties. In contrast, a proposed new $270-million Potomac Yard station on the Blue and Yellow Lines north of Braddock Road is to be funded by a special taxing district that will cover commercial properties and perhaps residential properties as well. The station will be opened in early 2023. There has also been speculation about an extension of the Green Line northward to Baltimore's BWI Airport, There was also talk of extending the Green either to National Harbor or to White Plains via Waldorf. An extension from Franconia/Springfield to Fort Belvoir is also a possibility due to the Base Realignment and Closure process which relocated thousands of area defense jobs at Fort Belvoir in 2012. While there has been much discussion about all of these extensions, none are in any official planning stage. There as also been plans to extend the Orange Line to Centreville and Bowie. Regarding Metrobus improvements, former General Manager Sarles reported, "Bus service will benefit from new technology that integrates fare box, destination signage and next bus systems to improve our reliability and customer information delivery. And, we will begin work in certain priority bus corridors that will deliver faster travel times for bus customers. Additionally, I look forward to working with the District of Columbia on potential bus rapid transit service improvements, such as curb running and signal preference to make bus service even more attractive, efficient, and an even more powerful antidote to traffic congestion." Energy efficiency initiatives WMATA reached an agreement in 2013 with the sustainable lighting division at Philips Electronics North America to switch to LEDs at no upfront cost. WMATA and Philips agreed to a ten-year