Until the December 2018 timetable change, the S2's westbound terminus was St. Gallen. Service from St. Gallen to Nesslau-Neu St. Johann had been provided by the S8. Scheduling issues with the S8 prompted a swap, with the S2 taking over the S8's former schedule west of St. Gallen.[6]
References
^Eisenbahnatlas Schweiz. Cologne: Schweers + Wall. 2012. pp. 14–15. ISBN978-3-89494-130-7.