The Metro del Vallès and Línia de Balmes are standard-gauge lines that run from Plaça de Catalunya railway station to Av. Tibidabo (L7, brown on the map), Reina Elisenda (L6, purple) and Sant Cugat del Vallès (S5), and then on to Sabadell (S2) or Terrassa (S1).
The line numbering is as follows: .