Moscow has an extensive tram system, which first opened in 1899. The newest line was built in 1984. Its daily usage by Muscovites is low, making up for approximately 5% of trips because many vital connections in the network have been withdrawn. Trams still remain important in some districts as feeders to Metro stations. The trams also provide important cross-links between metro lines, for example between Universitet station of Sokolnicheskaya Line (#1 red line) and Profsoyuznaya station of Kaluzhsko-Rizhskaya Line (#6 orange line) or between Voykovskaya and Strogino.