Alstom Secures GoA2 I-CBTC for Paris Metro Line 8

PARIS, FRANCE – Régie Autonome des Transports Parisiens (RATP) has selected Alstom to supply its I-CBTC onboard automatic train control system for Paris Metro Line 8. The contract, announced on 12 March 2026, is part of the OCTYS 2030 programme funded by Île-de-France Mobilités. The system will operate at Grade of Automation 2 (GoA2) and is critical for the deployment of new MF19 metro trains.

What Does This Contract Cover?

The agreement includes the supply and integration of Alstom’s I-CBTC onboard system and an accompanying radio communication system for data transmission. Alstom is also tasked with coordinating the overall integration of the automatic driving system on the trains. The project will involve three of Alstom’s French facilities: system engineering in Aix-en-Provence, radio installation in Saint-Ouen, and electronic equipment supply from Villeurbanne.

Key Contract Data

How Does This Compare to Similar Contracts?

This contract extends Alstom’s long-standing role in the OCTYS programme, which has already seen its I-CBTC system deployed on Paris Metro Lines 5, 6, 9, 10, and 11, with over 200 trains currently using the technology. While the source material mentions a major New York City MTA order for over 2,000 subway cars, it is not directly comparable as it focuses on rolling stock replacement rather than a specific onboard signalling system contract. Major global CBTC projects of comparable technical complexity include the resignalling of four London Underground lines by Thales with its SelTrac system and Siemens’ Trainguard MT installations on networks in cities like Copenhagen and São Paulo. The value of these comprehensive signalling programmes often runs into the hundreds of millions of euros, though the value for this specific onboard component for Line 8 was not made public.

Editor’s Analysis

This award strengthens Alstom’s incumbent position within the Paris network’s multi-decade modernisation plan, effectively locking in its technology on another key line. The move is representative of a global trend where metro operators prioritize signalling upgrades to increase capacity and reliability on existing infrastructure rather than undertaking more costly new line construction. The project is a key part of the investment driving the French railway signalling market, which is forecast to grow at a CAGR of 4.54% between 2026 and 2034. (Source: Market Data Forecast).

FAQ

Q: What is Grade of Automation 2 (GoA2)?
A: GoA2, or Semi-automated Train Operation (STO), means that train movement (acceleration, cruising, and stopping) is fully automated. A driver remains in the cab to control the doors, supervise the route, and intervene in case of emergencies.

Q: Is this the first time Alstom has supplied this system to the Paris Metro?
A: No, this is an extension of a long-term collaboration. Alstom’s I-CBTC onboard technology is already operational on Paris Metro Lines 5, 6, 9, 10, and 11, equipping more than 200 trains across the network.

Q: What is the primary benefit of I-CBTC for passengers?
A: The main passenger benefit is improved service regularity and frequency. By enabling trains to run safely at closer intervals, the system increases line capacity and can reduce wait times and crowding, particularly during peak hours.