| Bern S-Bahn | |||
|---|---|---|---|
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 A BLS S-Bahn train at Thun in 2013 | |||
| Overview | |||
| Locale | Bern, Switzerland | ||
| Transit type | S-Bahn | ||
| Number of lines | 13 | ||
| Daily ridership | 175,000 (weekdays) | ||
| Website | S-Bahn Bern (in German) | ||
| Operation | |||
| Began operation | 1974 (Bern) 1995 (regional) | ||
| Operator(s) | BLS AG Regionalverkehr Bern-Solothurn (RBS) | ||
| Technical | |||
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) (BLS) 1,000 mm (3 ft 3+3⁄8 in) (RBS) | ||
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The Bern S-Bahn (German: S-Bahn Bern; French: RER Berne) is an S-Bahn commuter rail network focused on Bern, the capital city of Switzerland. The network is roughly coterminous with Bern's urban agglomeration. Its services connect with those of Lucerne S-Bahn, RER Fribourg, RER Vaud and transN.
With approximately 9 million train kilometres per year, the Bern S-Bahn is the second-largest S-Bahn in Switzerland. It handles around 100,000 passengers daily (175,000 on weekdays), and thus carries the majority of the agglomeration's regional public transport traffic.