The urban stretch of the Roma-Viterbo line between Piazzale Flaminio and Saxa Rubra and Montebello, with metro lines A, B and B1 in the legend.
The northbound railway starts at Piazzale Flaminio, where it meets metro line A. The legend, in Italian, lists the metro lines too, so you can plan a change from the line A platforms to the suburban trains to Saxa Rubra.