The S19 is a regional railway line of the S-Bahn Zürich on the Zürcher Verkehrsverbund (ZVV), Zürich transportation network.
At , trains of the S19 service usually depart from underground tracks () 31âÂÂ34 (Löwenstrasse station).
The core of the route operates from to , operating via Zürich Hauptbahnhof and the Weinberg tunnel. At peak periods, trains are extended hourly from Dietikon to Koblenz, and half-hourly from Effretikon to . The following stations are served:
Between Dietikon and Effretikon, trains run every 30 minutes throughout the day. During the morning and evening peaks, a number of trains operate to and from Koblenz and Pfäffikon ZH. The journey time of the routes core between Dietikon and Effretikon is just over 30 minute. A through journey between Koblenz and Pfäffikon ZH takes around 80 minutes, although only a handful of trains per day permit such a journey.
services are operated by Re 450 class or two (head and tail) modified Re 420 (LION) locomotives pushing or pulling double-deck passenger carriages.
The route was introduced in the timetable revision of late 2015.