Eurotunnel Upgrades LeShuttle Fleet with ERTMS Signaling

CALAIS, FRANCE – Channel Tunnel concessionaire Eurotunnel has launched the first phase of its on-board signaling modernization program, contracting Mermec subsidiary Compagnie des Signaux (CSEE) to install the European Rail Traffic Management System (ERTMS) on its fleet of 57 Brush locomotives. The project, part of a contract signed in November 2025, will initially focus on the vehicle-side systems for the LeShuttle service between Folkestone and Coquelles.

Operational & Technical Details

The core of the upgrade is CSEE’s dual-standard signaling solution. This system allows the locomotives to operate using both the new European Train Control System (ETCS) and the tunnel’s legacy TVM (track-to-vehicle) system. This dual-mode capability is critical for a seamless migration. It enables Eurotunnel to continue full service while the fleet is upgraded and before the groundside infrastructure is fully adapted to ERTMS.

This approach is designed to reduce locomotive downtime significantly. The initial project phase concentrates exclusively on installing the on-board hardware and software platforms. The adaptation of ground infrastructure to communicate with the new ETCS-equipped vehicles will occur in a later phase of the modernization program.

Market Impact Analysis

By adopting the ERTMS standard, Eurotunnel is ensuring the long-term strategic relevance of the Channel Tunnel. This move is essential for maintaining interoperability with new generations of trains from across the European network, which are increasingly built to the ERTMS standard. The modernization enhances the asset’s safety and performance profile, solidifying its position as a critical artery for passenger and freight traffic between the UK and mainland Europe. For Mermec and CSEE, securing this contract for a high-profile, high-availability infrastructure link showcases their specialized dual-system technology for complex migration projects.

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