Berlin: S-Bahn S15 on its way
Above: Berlin S-Bahn S15 icon, from Wikimedia, by users F84 (original) and Minoa (rework).
25 Mar 2026
Opening date pushed back due to problems with timely safety checks and approvals; no new definitive date has been announced, but sometime at the end of May seems most likely. News items in German: Berliner Morgenpost — Entwicklungsstadt
For me, living memories of countless times in Berlin since 2002 include public transport with her U-Bahn and S-Bahn trains and routes. Like many, I never want that S-Bahn three-tone door-closing signal to go away, but that only comes with the older Baureihe 481-482 vehicles used for the trains, which will go away with the requirement to comply with European Union regulations.
On my first visit in 2002, I immediately asked: why isn’t there a U-Bahn connection or an S-Bahn connection with the shiny Berlin central train station? The U5 finally answered the first question in 2020, whereas the S-Bahn connection is coming up in 2026. The S-Bahn line provisionally labelled S15 is part of the larger long-term S21 project to connect the north and south parts of the S-Bahn Ring with the central station, and helping to alleviate traffic along the existing north-south S1-S2 route. In late-2025, news came out with a scheduled opening: on 28 March 2026, the S15 will open for public service between Gesundbrunnen and Hauptbahnhof via Wedding. The updated map doesn’t mark any S15 service between Westhafen and Hauptbahnhof, which might await the future redevelopment and reopening of the Siemensbahn further to the northeast.
I’m looking forward to seeing for myself in the summer of 2026 how the S15 works out. Announcement items in German: RBB24 — Entwicklungsstadt