The LHB was able to commence operations on its standard gauge line from Langenthal to Huttwil on 1 November 1889.

In order to obtain federal aid for rail electrification, the LHB merged with the HWB and the RSHB on 1 January 1944 to form the United Huttwil Railways (Vereinigten Huttwil-Bahnen, VHB), which immediately formed a joint venture called the EBT Group with the Emmental-Burgdorf-Thun-Bahn (EBT) and the Solothurn-Münster Bahn (SMB).

The VHB commenced electrical operations on the Langenthal–Huttwil line at 15 kV AC 16 ⅔ Hertz on 8 July 1945.

It is portion worked in Wolhusen, with the other half of the train operated as a RegioExpress service to Bern.

[4] The line between Langenthal and Wolhusen is also important for freight traffic consisting of gravel and timber.