The Passau–Erlau–Hauzenberg railway is a single-tracked branch line in the Regensburg railway division with a branch to Erlau–Obernzell(–Wegscheid), which was partially operated as rack railway using the Strub rack system.

The Wels–Passau railway—also called the Passauer Bahn in German—is a two-track, electrified main line railway mainly in Austria, which was originally owned and operated by the k.k. privilegierte Kaiserin Elisabeth-Bahn company. It runs from Wels in Upper Austria to Passau in Bavaria and is part of the core network of the Austrian Federal Railways.