Harmersbach Valley Railway

The Harmersbach Valley Railway (Harmersbachtalbahn) is a 10.6 km long branch line in southwestern Germany that branches off in Biberach from the Black Forest Railway and ends in Oberharmersbach-Riersbach.

The Harmersbach Valley Railway was opened on 15 December 1904 by the Vering & Waechter construction and operating company in Berlin, from whom it was transferred on 1 April 1917 to the German Railway Operating Company. Since 1963 it has belonged to the state-owned Südwestdeutsche Verkehrs-Aktiengesellschaft (SWEG). Its subsidiary, the Ortenau S-Bahn (OSB), runs the line today.

Since December 2005 single journeys via Biberach from and to Offenburg were connected. The rail traffic is enhanced by a parallel-running bus line owned by the SWEG, that is operated by a local sub-contractor.