The S44 is a railway service of the St. Gallen S-Bahn that runs every two hours between , in the Swiss canton of Thurgau, and in southern Germany. The line is also part of the Bodensee S-Bahn. THURBO, a joint venture of Swiss Federal Railways and the canton of Thurgau, operates the service.
The S44 runs every two hours between and . It makes one intermediate stop in . In Weinfelden, the S44 connects with the IC 8, which operates to via Zürich Hauptbahnhof. The hourly âÂÂKonstanz InterRegio 75 and half-hourly S14 provide frequent service between Weinfelden and Konstanz.
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The S44 began operation with the 11 December 2022 timetable change. Track capacity constraints limit operation to every two hours; future plans call for increased service.