Sokolnicheskaya Line
Moscow has an extensive tram system, which opened in 1899. The newest line was built in 1984. Its daily usage by Muscovites is low, approximately 5% of trips, because many vital connections in the network have been withdrawn.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 provide important cross links between metro lines, for example between University station of Sokolnicheskaya Line (Line 1) and Profsoyuznaya station of Kaluzhsko-Rizhskaya Line (Line 6). From 2014 the tram lines are upgraded.