Tvärbanan is a light-rail line in Stockholm, Sweden. Its name translates literally to The transverse line, as it operates crosswise to the otherwise radial metro and commuter rail lines of Stockholm. It links together several transit lines through its connections with the southern, western and northern subway branches of the Stockholm Metro (Tunnelbana) as well as three branches of the Stockholm commuter rail (Pendeltåg).
https://en.wikipedia.org/wiki/Tv%C3%A4rbanan