TGV !nOui: French High-Speed Train, Barcelona to Montpellier
This time, I took a train of TGV !nOui, which is a brand of French bullet train from Barcelona Sants to Montpellier Saint Roch in second class.
In Spain, this train runs on the railroad of standard gauge (for high speed), while it runs on the railroad for normal trains in France.
The ticket costs 97 EUR purchased at the web page of SNCF in one month advance.