The choice of rolling stock is a key decision for operators. This investment, which has a lifespan of 30 to 40 years and is a differentiating factor for users, is vital to the commercial success of the project. It is in fact safety, performance and comfort, as well as reliability and costs over the entire lifecycle, that will ensure the profitability of our clients’ business.

As for rolling stock maintenance facilities, optimised design means more efficient operation, higher availability, minimised operating costs and energy savings.


We also help our clients to optimise their rolling stock and workshops without having to make major investments. This ranges from the conversion of existing buses and trains to low or zero carbon running.

We analyse your constraints to identify the most appropriate solution, which may involve adding batteries to an existing tramway or converting a diesel locomotive to run on hydrogen with a fuel cell.


Beyond the financial aspects, the choice of new or renovated rolling stock can have a considerable impact on local pollution and the carbon footprint. It can also encourage passengers to change their habits. These aspects need to be taken into account as part of a lifecycle assessment.

For operation on non-electrified lines, new fuels and energy sources are appearing to replace diesel power: battery-powered trains, natural gas and fuel cells (hydrogen). They require the adaptation of existing installations or the design and construction of new dedicated facilities.

New regulations call for the design of more sustainable and environmentally-friendly workshops, with better management of waste and water resources, pollution prevention and optimised energy efficiency.


SYSTRA draws on its extensive experience of projects throughout the world to provide detailed, in-depth advice to clients looking to acquire or renovate rolling stock and maintenance facilities.

We take a long-term view, taking into account the legal, safety and financial aspects of the project, as well as performance, environmental and operational criteria. As this is a major investment for our clients, we also anticipate and take into account aspects such as the mid-life refurbishment of rolling stock.


The projects we lead are always the fruit of close collaboration between our teams, our clients, and our partners. And it is they who speak most highly of them.

I can testify to the close and fruitful collaboration between the Société des Grands Projets and its project manager SYSTRA on the rolling stock for lines 15, 16 and 17.  SYSTRA has been working with us for more than 10 years, starting with preliminary design studies, and we are now managing with Alstom the execution of a major contract with high stakes, in a complex environment. I particularly appreciate the professionalism and skills of the SYSTRA team, which is committed to the success of the project, and the remarkable individuals who are helping us at every stage.

Benoît Barthe, Rolling Stock Manager Grand Paris Express

Did you know?

On average, a TGV in France travels 10 million km during its service. That’s the equivalent of 10 round trips from the Earth to the Moon!