Stockholm Metro

The Stockholm Metro (Swedish: Stockholms tunnelbana, lit. 'Stockholm's tunnel rail') is a rapid transit system in Stockholm,  Sw ed en . The first line opened in 1950, and today the system has 100 stations in use, of which 47 are underground and 53 above ground. There are three coloured main lines on the tube maps. These do, however, form seven actual routes (with different termini). Routes numbered 17, 18 and 19 (belonging to the green main line), 13 and 14 (red main line) and 10 and 11 (blue main line) all go through Stockholm City Centre in a very centralized metro system. All seven actual lines use The T-Centralen hub station. Apart from this central station for the metro, there exists just one other interchange between lines, the Fridhemsplan station, although both the green and red lines are mutually accessible at the Slussen and Gamla Stan stations

The metro is equipped with ticket gates. Single tickets must be bought in advance, typically in privately owned smaller shops, or at ticket machines that are available in all underground stations and on several tram, bus, or boat stops. Passengers can also buy tickets at the ticket booth, just by the gates to the metro Traffic in the metro moves on left-hand side, because cars and trams still drove on the left in Sweden when the metro system opened

In 2017, the metro carried 353 million passengers, which corresponds to 1,2 million in a normal weekday. The 105.7-kilometre-long (65.7 mi) metro system is owned by the Stockholm County Council through the company Storstockholms Lokaltrafik (SL). The operation has been contracted to MTR Nordic since 2 November 2009

The Stockholm metro system has been called 'the world’s longest art gallery', with more than 90 of the network's 100 stations decorated with sculptures, rock formations, mosaics, paintings, installations, engravings and reliefs by over 150 different artists