Expert Report Says Ignored Warning Signals Worsened Gotthard Train Derailment

A new expert investigation into the 2023 Gotthard Base Tunnel derailment has revealed that warning signals were reportedly ignored before the major railway accident occurred.

According to a report commissioned by the Ticino public prosecutor’s office, Swiss Federal Railways (SBB) may have been able to prevent or reduce the severity of the derailment inside the Gotthard Base Tunnel.

The accident happened in August 2023 after a wheel on the eleventh freight wagon broke while the train was travelling through the tunnel. The failure caused extensive infrastructure damage, resulting in repair costs estimated at around CHF150 million and the closure of one tunnel tube for more than a year.

The newly released findings, obtained by Swiss broadcaster SRF, state that a series of warning alerts appeared in SBB’s operational systems after the wheel defect occurred. However, operators allegedly failed to react to the warning messages in time.

Investigators believe earlier intervention, including emergency measures to stop the train, could potentially have limited the scale of the destruction inside one of Europe’s most important rail corridors.

The report has sparked renewed debate over railway safety systems, operational procedures, and monitoring technology within Switzerland’s transport network.

Industry representatives and transport experts are now calling for a detailed review of emergency response protocols and automated warning systems to prevent similar incidents in the future.

The Gotthard Base Tunnel is a key part of European freight and passenger transport infrastructure, linking northern and southern Europe through the Swiss Alps. The prolonged closure following the derailment caused significant disruption to international rail traffic and logistics operations.

Authorities are expected to continue examining accountability and operational responsibilities as part of the ongoing legal investigation.