Yeah, it has right-hand traffic except for a section of L2, between Paral·lel and Tetuan. On other stations it's not that easy to see because of how the platforms are positioned, but in Sant Antoni and Paral·lel it's pretty evident. This is because the radius of the curve just after Monumental station (between it and Tetuan) was too tight for the metro trains. So they decided to make the tunnels cross one above the other at that point, so that the curve was possible (although it's still pretty tight). You can see it more clearly at the cartometro website :)
Interesting to see the trains running on the left. I thought Barcelona Metro had right-hand traffic only.
Yeah, it has right-hand traffic except for a section of L2, between Paral·lel and Tetuan.
On other stations it's not that easy to see because of how the platforms are positioned, but in Sant Antoni and Paral·lel it's pretty evident.
This is because the radius of the curve just after Monumental station (between it and Tetuan) was too tight for the metro trains. So they decided to make the tunnels cross one above the other at that point, so that the curve was possible (although it's still pretty tight).
You can see it more clearly at the cartometro website :)