Basel S-Bahn

Network map

Basel S-Bahn
S-Bahn train at Basel SBB
Overview
Native name	German: Trinationale S-Bahn Basel, French: RER trinational de Bâle
Owner	SBB CFF FFS, SBB GmbH, DB, SNCF Mobilités
Area served	Swiss cantons of Basel-City, Basel-Country, Aargau, Solothurn, Jura, German state of Baden-Württemberg, and the French region of Grand Est
Locale	Basel metropolitan area
Transit type	S-Bahn
Number of stations	108
Annual ridership	47 million (2019)
Headquarters	Basel, Switzerland
Website	www.trireno.org
Operation
Began operation	1997; 27 years ago (1997)
Operator(s)	SBB CFF FFS, DB Regio, TER Grand Est
Character	At-grade
Technical
System length	357 km (222 mi)
Track gauge	1,435 mm (4 ft 8+1⁄2 in)
System map

The Basel S-Bahn (German: Trinationale S-Bahn Basel, French: RER trinational de Bâle) has provided an S-Bahn-style rail service connecting the Basel metropolitan area since 1997 in Switzerland, Germany and France. It consists of eight suburban train lines, including four that operate across borders.

The S-Bahn is operated by the Swiss Federal Railways (SBB CFF FFS), its German subsidiary SBB GmbH, the German DB, and the French SNCF Voyageurs. The responsible transport authorities are the Swiss cantons of Basel-City, Basel-Country, Aargau, Solothurn, Jura; the German state of Baden-Württemberg and the French region of Grand Est. Since 2018, they coordinate under the name trireno the future extension of the S-Bahn.^[1]