The Bernese Oberland Railway (BOB) is a modern regional railway that connects the Lütschinen valleys with public transport from Interlaken Ost and acts as an important feeder line for the excursion destinations in the Jungfrau Region. As a rule, two trains are coupled together until Zweilütschinen, where they are separated. One train travels onwards to Lauterbrunnen, the other to Grindelwald. All compositions can be coupled together for shuttle purposes, with the locomotive always positioned on the uphill end of the train. A control car with driver's cab is positioned on the downhill end to avoid any switching manoeuvres at turning stations.