SYSTRA and Dassault Systèmes have agreed to collaborate on virtual twin technology for rail infrastructure, the two Paris-headquartered groups announced. The partnership, reported by Railways Africa, will apply Dassault Systèmes' 3DEXPERIENCE platform to design, construction and asset management workflows across the rail sector.

What is a virtual twin?

A virtual twin is a live digital replica of a physical asset — track, tunnel, station or signalling system — that engineers can stress-test under simulated conditions before committing to physical works. The concept migrated into rail from aerospace and automotive manufacturing, where Dassault Systèmes' CATIA software has run since the 1980s. Rail adopters use digital replicas to model load cycles, energy consumption, passenger flow, ventilation performance and maintenance windows against a single shared dataset, replacing the document-based review process that has dominated the sector for decades.

Who are the partners?

SYSTRA operates as a specialist rail engineering consultancy owned by SNCF and RATP, the state operators of France's heavy rail and metro networks. The group delivers design, project management and supervision services on high-speed lines, metros, tramways and freight corridors across more than 80 countries.

Dassault Systèmes, listed on Euronext Paris, sells the 3DEXPERIENCE platform that underpins virtual twins across aerospace, automotive, life sciences and urban planning. The vendor has positioned rail and infrastructure as a growth vertical, competing with Bentley Systems and Siemens in the digital engineering market. Its cross-sector data library gives rail projects a manufacturing-grade reference base that bespoke engineering models have historically lacked.

What will the collaboration cover?

The announcement frames the joint work around three applications:

• Design review, allowing engineers to compare alternative alignments and geometry options against cost, capacity and carbon criteria.
• Construction sequencing, simulating staging around live railway operations to cut possession time and rework.
• Lifecycle asset management, forecasting maintenance interventions across a 30- to 50-year asset horizon.

The agreement does not disclose financial terms, a project pipeline, customer commitments or a delivery timetable. Both groups have indicated that pilot work will focus on heavy rail and metro projects in Europe, the Middle East and Africa, regions where SYSTRA already runs sizeable design offices.

Why does this matter for rail?

Public and private rail operators face three pressures that virtual twin technology addresses directly: ageing assets, decarbonisation mandates and capital budgets that lag infrastructure need. A digital replica allows project sponsors to test design changes, procurement strategies and renewal programmes without interrupting live operations, reducing the rework cost that has dogged megaproject delivery in the sector.

Several European infrastructure managers — among them Network Rail, Deutsche Bahn, SNCF and Italian network RFI — have piloted digital twin tools on individual projects. The SYSTRA-Dassault Systèmes agreement points to a more standardised commercial offering, which could lower the entry cost for smaller operators and regional authorities.

The partnership also extends Dassault Systèmes' presence in regulated infrastructure procurement, where software vendors typically enter through long-term framework agreements rather than per-project licences. SYSTRA's role as an engineering intermediary may help the software vendor work through qualification processes on state-owned networks.

What comes next?

The two groups have not named a pilot project, customer or go-live date. Readers should watch for joint client announcements in the second half of the year, when infrastructure frameworks in Europe, the Gulf and Southeast Asia typically refresh. The collaboration will test whether virtual twin tooling can move from bespoke engineering exercises to standard practice on tenders priced in the hundreds of millions of euros, and whether the rail sector will accept a platform that originated in aircraft design.