Skip to main content

Leading the way to greener and smarter mobility, worldwide.

Our ambition is to accompany all transportation stakeholders in meeting tomorrow’s mobility challenges. We strive to provide them with the most efficient and digital mobility systems, while further improving the environmental friendliness of our solutions. 

Smart innovation for sustainable mobility

Follow us on

A comprehensive portfolio of mobility solutions

We offer a complete range of equipment and services, from high-speed trains, metros, trams and e-buses to integrated systems, customised services, infrastructure, signalling and digital mobility solutions.

Discover our solutions

Follow us on


Find the latest Alstom press releases and news, press kits, your regional press contacts and more!

Enter the newsroom

Follow us on

The one stop shop for all relevant information for investors and shareholders

Access our financial & share information, our financial calendar and results, regulated information, shareholders' meetings and investors' contacts & presentations.

See more

Follow us on

You know we make trains move. Discover how we move the world.

At Alstom, we value curious and innovative people who are passionate about working together to reinvent mobility, making it smarter and more sustainable. We are building an agile, inclusive, and responsible culture, where diverse people are offered opportunities to learn, grow and advance in their careers, with options across functions and geographies.

Learn more


Smartlock range: Intelligent and effective interlocking for train protection

Intelligent and effective interlocking for train protection

Smartlock range at a glance

  • No intermediate relays
  • Lower and easier maintenance
  • ERTMS and CBTC ready

With railway systems becoming ever more complex, railway operators and maintainers need an interlocking system that they can count on to guarantee the performance and availability of the system. The Smartlock interlocking family offer flexible, user-friendly and cost-effective solutions, helping Alstom’s customers meet their objectives.

Direct interfacing

The principal and innovative feature of the latest solution in the range, Smartlock 400, is its direct interfacing with trackside objects such as point machines and signals. This removes the need for intermediate relays, meaning that less ground infrastructure (20%) and cabling is required, generating a lower footprint and consequently saving on maintenance costs. 

Flexibility and ease of implementation

While each installation is tailored to the customer’s specific needs, Smartlock’s modular architecture, with standardised interfaces and standard maintenance and configuration tools, guarantees easy application to a host of different railway systems, whether new or existing, from low density regional lines to high speed mainline corridors, or to adapt to a future variation in network traffic. It can interface with existing trackside objects without modification, and it is compatible with three different application languages. With this adaptability, project implementation times are much lower than other options available on the market.

Seamless integration with ERTMS and CBTC systems

Thanks to its network-based architecture, Smartlock makes for simplified interfaces with advanced train supervision and train control systems such as mainline ERTMS and urban CBTC, in addition to efficient maintenance systems that map out the status of objects along the line. When an anomaly occurs, an alert is sent to the nearest maintenance staff member indicating the part affected and the action required. All of this ensures faster troubleshooting and enhanced availability.

country networks
routes managed (up to)
million working hours of interface experience
years of worldwide return on experience