Mörby centrum metro station in the context of "Red line (Stockholm Metro)"

The Red line (Swedish: Röda linjen; officially Metro 2, but called Tub 2 ("Tube 2") internally), is one of the three Stockholm Metro lines. It has a total of 36 stations, of which four are cut and cover, 16 are tunneled, and 15 are on the surface. The line is a total of 41.238 kilometres (25.624 mi) long. It consists of four branches with terminals in Fruängen and Norsborg in the southwest and Mörby centrum and Ropsten in the northeast.

The "Red line" designation began in the late-1970s, and officially only since the 1990s, and comes from the fact that the route has been marked in red on Storstockholms Lokaltrafik's maps at least since the 1970s. Previously, the Red line had been coloured orange on the system map, but as new maps were printed with changes, the colour became increasingly redder in the 1980s.