Alstom has secured the Mauá Norte Yard signalling contract to equip CPTM’s new six-track facility on São Paulo’s Line 10-Turquoise with integrated digital control systems.

Mauá station platforms and railway tracks on CPTM Line 10-Turquoise in Greater São Paulo
Mauá station and its railway tracks on CPTM Line 10-Turquoise in Greater São Paulo. Photo: Allan S. Lisboa / Wikimedia Commons / CC BY-SA 4.0; cropped and resized.

The 15 July agreement covers the supply, installation, testing and commissioning of a complete system at the yard between Mauá and Capuava stations. Alstom’s announcement⁠ says the work will take 18 months, followed by six months of operational monitoring and a two-year warranty. CPTM’s procurement portal⁠ separately confirms the 2026 tender for engineering, supply and implementation of the yard’s signalling and control system. 

Mauá Norte Yard signalling contract scope

The package includes SIL 4 electronic interlocking, field equipment for controlling switches, trackside light signals and train-occupancy detection. Alstom will also provide CCTV, access control, telecommunications infrastructure and dedicated railway radio communications.

A CPTM commuter train at Capuava station on Line 10-Turquoise in Mauá, São Paulo
A CPTM train at Capuava station on Line 10-Turquoise, near the new Mauá Norte Yard. Photo: Allan Lisboa / Wikimedia Commons / CC BY-SA 4.0

The six new tracks are intended for shunting, train formation and the overnight stabling of trainsets. By replacing processes that rely heavily on manual procedures, the system is designed to give controllers real-time track-occupancy information, improve train allocation and reduce the risk of conflicts with Line 10’s main tracks. 

Alstom did not disclose the contract value. It said the solution will be developed and supplied locally, with the engineering work carried out by Brazilian employees.

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How the Mauá Norte Yard signalling contract will operate?

The operating architecture will combine a local yard control centre with two remote supervision posts. These facilities will connect to the Line 10-Turquoise Operational Control Centre, enabling centralised monitoring and coordinated traffic management across the yard and adjacent railway. 

Alstom must also adapt and integrate the existing signalling installations around Mauá and Capuava so that the new equipment communicates continuously with neighbouring systems. 

“Automation at the Mauá Yard is another step in CPTM’s modernization process,” CPTM President Michael Cerqueira said. 

The project is intended to improve operational safety for yard staff while supporting more reliable passenger services. Better visibility of train movements and faster shunting decisions should help CPTM use the new infrastructure more efficiently and limit delays caused by yard operations.

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