The S41 is a regional railway line of the Zürich S-Bahn on the ZVV. It connects the cities of Bülach and Winterthur in the canton of Zürich, calling at all intermediate stations.
Stadler GTW of Thurbo operating as S41 service at Winterthur
The S36 is a regional railway service of the Zurich S-Bahn operated by Thurbo. The service runs hourly between Waldshut and Bülach over the western half of the Winterthur–Bülach–Koblenz railway, calli