— Line 3, currently known as Zona Universitària - Trinitat Nova, coloured green and often simply referred to as Línia verda ("Green line"), is a metro line in Barcelona operated by TMB, and therefore part of the fare-integrated ATM transport network of the urban region. This V-shaped line is the result of the junction of two related lines: the original L3 and L3B, in 1982. The central section of L3 has the city's oldest metro stations, built in the mid-1920s, with additions almost every decade since then.