Winterthur railway station
Winterthur is Switzerland's fifth busiest station, and is a major node between Switzerland's largest railway nucleus in Zürich and places in Eastern Switzerland (such as St. Gallen and Schaffhausen), as well as Germany (Munich), and Austria (Vorarlberg). The station is served by trains on Zürich's suburban S-Bahn network, as well as by regional and intercity trains, with most through passenger trains making a stop. It is also connected with Zürich's airport railway station Zürich Flughafen, which can be reached in about 15 minutes about every 8 minutes. Zürich Hauptbahnhof can be reached with up to 16 direct connections per hour and the fastest connection takes only 22 minutes (S12). The station has 9 standard gauge platforms (numbered 1-9).
S5 (ZVV)
Prior to the timetable revision of late 2015, the section of the S5 between Zürich and Pfäffikon operated much as today. However west of Zürich, the trains operated to Oberglatt, where alternate trains continued to either Niederweningen or Rafz. The core of the line ran to a frequency of every half hour, thus providing hourly services to Niederweningen and Rafz. The section between Oberglatt and Niederweningen was also served by an hourly shuttle service numbered S55, that connecting at Oberglatt with the S5 trains that run to and from Rafz.