The Roissy–Picardie rail link is a landmark infrastructure project designed to provide a direct connection between the Picardy region—particularly the cities of Amiens and Creil—and Roissy–Charles de Gaulle Airport, one of Europe’s busiest air travel hubs. By bypassing central Paris, this 6 km new line will significantly reduce travel times for passengers and freight, while simultaneously relieving congestion on existing lines such as Gare du Nord, which currently serves as a major transit hub for millions of travelers each year. The project reflects France’s ongoing commitment to modernizing its rail infrastructure and enhancing connectivity between regional cities and key international gateways.
As a subcontractor for Compagnie des Signaux (CSEE), Eiffage Énergie Systèmes is entrusted with critical responsibilities on both the Roissy–Picardie section and the newly constructed portions of the line. The company’s teams are also actively involved in upgrading and supervising all signaling posts along the route, including at Roissy–Charles de Gaulle station, ensuring that operations meet the highest standards of safety, efficiency, and reliability. The main areas of intervention include:
- Signaling execution studies, ensuring that every aspect of the system is precisely designed for optimal performance.
- Installation, testing, and verification of signaling systems, aimed at modernizing stations using SEI + CSEE technology, which integrates advanced automation and control features.
As part of this modernization, five SEI (Integrated Interlocking Systems) and one CAI (Intermediate Equipment Center) will be installed along the route. These state-of-the-art systems are essential for enhancing the safety and operational performance of the railway, enabling more accurate train management, minimizing delays, and increasing overall network efficiency.
Eiffage Énergie Systèmes brings extensive experience in complex rail projects to this initiative, having previously contributed to major endeavors such as the Paris–Lyon high-speed rail line (LGV+), where it successfully implemented similar signaling and interlocking technologies. This track record of excellence and technical proficiency played a key role in the company securing the Roissy–Picardie contract, as well as the “LFRP Y-shaped construction” contract, awarded directly through SNCF’s tendering process. These projects underscore the company’s commitment to delivering high-quality, reliable solutions in partnership with France’s leading rail operators.
Preparing the Ground for Modernization
Preparatory work began in May, focusing on the clearing of points, a critical preliminary step required to facilitate SNCF Réseau’s scheduled summer operations. This initial phase ensures that the construction sites are fully ready for the installation of new signaling systems, wiring, and other technological components without disrupting ongoing rail services.
The upcoming phases of the project are meticulously planned to balance innovation with operational continuity. Key milestones include:
- Y-connection works: This essential phase links existing operational installations to the new SEI+ system, allowing the system to be tested at night while returning to existing configurations during daytime service. This approach ensures uninterrupted passenger service while enabling rigorous verification of new technologies.
- Wiring of six new stations, integrating modern control and monitoring systems to enhance operational efficiency.
- Adaptations and upgrades to existing networks, ensuring seamless integration between new and old infrastructure components.
- Deployment of security installations across rural segments, enhancing safety for both railway personnel and passengers.
By implementing these advanced systems, Eiffage Énergie Systèmes is not only improving operational efficiency but also contributing to long-term sustainability. Reduced congestion, optimized train scheduling, and improved signaling accuracy collectively minimize energy consumption and environmental impact, aligning the project with broader European rail modernization goals.
Driving Safer, More Efficient Rail Travel
The Roissy–Picardie project exemplifies the role of technology in modern rail networks. Through the deployment of SEI and CAI systems, Eiffage Énergie Systèmes is enabling a new level of safety, reliability, and performance, ensuring that passengers traveling between Picardy and Roissy–Charles de Gaulle enjoy a faster, smoother, and safer journey.
With these upgrades, Eiffage Énergie Systèmes continues to solidify its reputation as a leader in rail infrastructure modernization. By combining technical expertise, innovative solutions, and a commitment to operational excellence, the company is helping to shape the future of French rail transport, improving both regional connectivity and passenger experience.
