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


ITCS: Satellite-based vital train control

China - Tibet Line

ITCS at a glance

  • Scalable and flexible virtual block signalling
  • Ultra-low wayside infrastructure
  • Proven in use in harsh and remote environments

In low density railway networks, and for customers operating in harsh and remote locations, traditional signalling systems can prove difficult and expensive to install and maintain. Using satellite positioning and virtually no wayside infrastructure, Alstom's flexible and hard-wearing answer is ITCS.

Minimal wayside infrastructure

The Alstom incremental train control system is a virtual block-based signalling system that uses GPS to determine train location, eliminating the need for trackside devices such as balises and physical train detection such as track circuits or axle counters. As signals are transmitted by virtual means and not on the trackside, it requires very little infrastructure on the ground, and it can be deployed either as an overlay to an existing signalling system or as a standalone solution. As such, it can be configured to any type of project requirements, communication system and radio frequency, and can be expanded as railway operations grow.

Simulation of Alstom’s ITCS system, Beijing © Alstom / A.Février
Simulation of Alstom’s ITCS system, Beijing © Alstom / A.Février

Safety and throughput

Designed with safety first, the ITCS speed enforcement and vital positive stop functions mean that the train will never go past a boundary or exceed the safe limits of operation. ITCS complies with the requirements of the US legislation's 2008 railway safety improvement act as a positive train control (PTC) system, and is certified for operating speeds up to 177 km/h, with its distinctive wireless advanced crossing activation feature. An additional advantage of virtual blocks in relation to physical blocks is that they can be made to any size, increasing the capacity of a line and therefore its throughput without adding railway infrastructure.

Robust and cost-effective

With 1.7 million hours of accident-free service to its credit, ITCS has been deployed in some of the world's harshest environments: the Tibetan plateau, the Australian Outback and the Colombian jungle. All our equipment is shock, vibration and temperatures tested to guarantee its long-term performance. In addition, the only infrastructure required on the wayside is the server; this consequently requires very little installation and maintenance and therefore benefits from low life cycle cost.

is the 1st entry in revenue service for ITCS
million hours of accident-free service
countries on 3 continents