R3 (Rodalies de Catalunya)
…line R12, calling at Sants, Plaça de Catalunya and Arc de Triomf stations. They run primarily on the Barcelona–Latour-de-Carol-Enveitg railway, using Latour-de-Carol-Enveitg as their northernmost terminus, and L'Hospitalet de Llobregat as its southern one. Together with lines R1, R2 and R4, the R3 (then simply numbered line…