Overview

• The July 2 malfunction at Hackescher Markt triggered major delays on S3, S5, S7 and S9 during Berlin’s hottest day of the year
• Line S3 is operating every 10 minutes only between Friedrichshagen and Warschauer Straße while express services to Ostbahnhof remain suspended
• Line S5 has been cut back to run between Strausberg Nord and Ostbahnhof with 40-minute headways north of Strausberg and 20-minute intervals south
• Berliner Verkehrsbetriebe has suspended U1 indefinitely and reduced U3 headways, forcing commuters onto replacement buses and lengthy detours
• Long-standing faults in Hackescher Markt’s track-clearance system have exposed chronic maintenance challenges under extreme heat