It owns a railway line of only 8.9 km between Sursee, where it connects to the SBB-CFF-FFS network, and Triengen.

This line hosts limited freight services plus excursion trains of the Dampfbahn-Verein Zürcher Oberland.

When the line was opened in 1912, SB built a passenger Station North of the Old town Center, called Sursee-Stadt.

The motorway connection Sursee called for the construction of a Northern Ringroad Ringstrasse Nord through the Bifang.

On 25 September 1971 regular passenger traffic of the ST ended and a new bus service Sursee–Triengen–Schöftland connected with the modernized WSB line.

[1] After the 1999 reform of railway law, SBB Cargo decided to bring freight cars to their destinations in open access.

A study about the feasibility of reinstating passenger traffic and a possible extension to Schöftland commissioned by the Sursee-Triengen company with ETH Zurich[2] was published in May 2009.

The municipality Triengen opposes passenger rail traffic, as access to settlements seems to be better by road transport.