| Low-floor multiple units Stadler FLIRT in the series RABe 521 are designed for cross-border traffic to Germany. They are operated by the trinational S-Bahn Basel (formerly: Regio-S-Bahn Basel). It connects the trinational agglomeration of the Swiss city of Basel with Germany and France. It consists of a total of eight S-Bahn lines and is used by more than 47 million passengers per year. |