Sao Paulo Rail Upgrade: ETCS Level 2 Arrives
Alstom revolutionizes Sao Paulo’s rail network with ETCS Level 2, enhancing safety and efficiency on Lines 8-Diamond and 9-Emerald – a first for Latin America.

Sao Paulo, Brazil – June 2, 2025 – Alstom, a global leader in smart and sustainable mobility, has secured a significant contract to modernize the signalling systems on Lines 8-Diamond and 9-Emerald of the Sao Paulo metropolitan rail network. This project, undertaken in collaboration with ViaMobilidade (the operator) and the Government of Sao Paulo, marks a pivotal moment for the region’s urban transit. The core of this modernization effort involves implementing the European Train Control System (ETCS) Level 2, a first for Latin America. This advanced signaling technology promises to revolutionize the operational efficiency, safety, and passenger experience on these vital lines. The six-year project, representing a substantial investment of $174.6 million, underscores Alstom’s commitment to enhancing urban mobility solutions worldwide and advancing railway technology in Brazil. This initiative will improve the current infrastructure in the rail transport system.
A New Era for Sao Paulo’s Rail Network
The heart of this project lies in the adoption of the European Train Control System (ETCS) Level 2. This advanced signaling system represents a significant leap forward from the existing infrastructure. ETCS Level 2 is a cutting-edge train protection system that provides continuous supervision of train movements. It achieves this through the use of radio-based communication between the trackside equipment and the train-borne equipment. Unlike its predecessor, ETCS Level 1, which relies on trackside signals, ETCS Level 2 eliminates the need for physical signals, instead providing real-time information to the train via radio. This real-time data enables more efficient train management, optimizing speeds and distances between trains, ultimately increasing line capacity and reducing headways. The integration of ETCS Level 2 signifies a commitment to enhancing the overall safety and operational efficiency of Sao Paulo’s rail network.
Technological Advancements and Operational Benefits
The implementation of ETCS Level 2 on Lines 8-Diamond and 9-Emerald will bring several advantages. A crucial aspect of the upgrade is the enhanced safety features. The system continuously monitors train movements and automatically applies the brakes if a train exceeds the authorized speed or deviates from its route, significantly minimizing the risk of accidents. Furthermore, the adoption of ETCS Level 2 is expected to lead to increased train frequency and optimized travel times. The system’s ability to accurately manage train separation allows for closer headways, enabling more trains to run on the same line and reducing passenger waiting times. Real-time monitoring of train movements also provides operators with greater control, enabling them to respond quickly to any disruptions and minimize their impact on service. In addition to the ETCS Level 2 implementation, the project encompasses the modernization of existing infrastructure, including the upgrading of trackside equipment and the installation of new onboard signaling systems in the trains.
Project Scope and Strategic Significance
The modernization project, valued at $174.6 million, will be completed within a six-year timeframe. This initiative represents a significant investment in Sao Paulo’s urban mobility infrastructure. Alstom’s scope of work includes the complete upgrade of the signaling systems on Lines 8-Diamond and 9-Emerald, encompassing the design, supply, installation, and commissioning of the ETCS Level 2 system. Furthermore, Alstom will provide maintenance and support services to ensure the long-term reliability and performance of the system. The contract also covers the integration of the new signaling system with the existing infrastructure, ensuring seamless interoperability with other lines in the network. This project builds upon Alstom’s previous experience in Latin America, including the implementation of ETCS Level 1 in Mexico. The company’s local presence and expertise in railway technology and project management position it to successfully deliver this complex project, contributing to the improvement of the public transport system.
Looking Ahead: A Summary and Conclusion
In conclusion, Alstom’s contract to modernize the signaling systems of Sao Paulo’s Lines 8-Diamond and 9-Emerald marks a significant milestone for urban rail transport in Latin America. The implementation of ETCS Level 2, a first for the region, will revolutionize the operational efficiency, safety, and passenger experience. The project’s core objectives are to enhance safety through continuous train monitoring, increase line capacity by optimizing train separation, and improve the overall travel experience through reduced waiting times and more reliable service. The benefits of this modernization extend beyond operational efficiency; they will also contribute to the city’s sustainability goals by encouraging the use of public transport and reducing congestion. This project underscores Alstom’s commitment to providing advanced and sustainable mobility solutions. This initiative shows the company’s technical skills, which will provide passengers with advanced infrastructure. This project reflects the dedication of the Government of Sao Paulo and ViaMobilidade to improving the quality of life for its citizens by providing a more efficient, safer, and comfortable public transportation system. Alstom’s investment in Brazil demonstrates a long-term vision for supporting sustainable urban mobility in the region, as well as a focus on innovation and technological advancement. The successful completion of this project will set a new standard for urban rail transportation in Latin America.
About Alstom: Alstom is a global leader in the rail transport sector, specializing in the design, manufacturing, and servicing of railway systems and equipment. The company offers a comprehensive portfolio of products and services, including trains, signaling systems, infrastructure, and digital mobility solutions. Alstom operates in over 70 countries, with a significant presence in Latin America, and is committed to providing sustainable and innovative mobility solutions.




