Overview
- The Bundesstelle für Eisenbahnunfalluntersuchung concluded that a landslide triggered by roughly 28 liters of rain per hour caused the derailment on July 27, 2025, which killed three people and injured 36.
- The report says mud and earth fell onto the Sigmaringen–Ulm line and the Regionalbahn struck the deposit at about 150 km/h, causing the lead unit to derail and be pushed up a slope.
- Investigators documented that local train dispatchers voiced alarm about the weather yet had no formal instructions on how to respond, creating a documented tension between safety and punctuality.
- Deutsche Bahn closed the line for months and rebuilt the accident section, replacing almost 700 metres of rail, about 500 concrete sleepers and signal cables on the non‑electrified route.
- A death-investigation by the Staatsanwaltschaft Ravensburg remains open and is awaiting a geological expert opinion, a step that could shape any criminal findings and prompt changes to local operating rules.