discover tess To help improve the sustainability of infrastructure and fleets, we are drawing on our capacity for innovation to develop digital and technical solutions. We enable our clients to better manage their energy performance and influence the carbon impact of projects through their design, while factoring in the costs and operational constraints of their implementation and operation. Digital tools to optimise operation In Canada, SYSTRA has developed TESS, a decision-support simulator for planning and optimising the electrification of urban transit fleets. By modelling and simulating real-world operating scenarios, and taking into account the operational constraints of depots, it can be used to define an optimal operating strategy, reduce electric power peaks by 60% and optimise energy consumption. Low-carbon technical solutions Railway line regeneration or construction projects require significant investment from transport authorities and infrastructure managers. To support them, SYSTRA has developed Slab Track, a new generation of patented tracks on slabs. Slab Track is made in France and is the only system of its kind in the world. Easy to lay, it is produced on an entirely prefabricated low carbon reinforced concrete structure and has a very low environmental impact. Its carbon balance is 31% lower than the lifecycle of a traditional ballasted track and the low-carbon concrete parts are designed to last a minimum of 50 years. “Slab Track’s terms of reference were bold: develop a disruptive slab track concept, fully prefabricated, interchangeable and incorporating a track geometry correction system, and all this while taking into consideration the environmental challenges which we are facing. For equivalent production costs and service life, this patented concept results in a very significant reduction in subsequent maintenance costs. It represents a real alternative to traditional track ballast replacement operations.” Youcef Alloui Project Manager, France “TESS is the result of innovative collaborations with several engineering, software development and public transport organisations, as well as research centres. The innovation lies in making users self-sufficient, and in making detailed, precise and powerful simulations possible.” Vincent Berducou Director of Urban Systems Operation and Maintenance, Canada 6 — SYSTRA — 2022 Sustainability Report