Cubris® to provide new energy saving system for London’s Elizabeth line


Sustainable mobility provider Alstom has decided to implement the GreenSpeed® connected driver advisory system (DAS) from Cubris® on Transport for London’s Elizabeth line rail service.

Alstom has chosen to implement Cubris®’ driver advisory system on Transport for London’s Elizabeth line.

The GreenSpeed® product by Cubris® is a state-of-the-art real-time driver advisory system supporting relevant rail standards and protocols.

The Elizabeth line is a hybrid urban–suburban rail service in London, running from Reading and Heathrow Airport in the west to Shenfield and Abbey Wood in the east. With up to 24 trains an hour across central London at peak times, the Elizabeth line serves 41 stations and has around 4.3 million journeys per week across the UK capital and its suburbs.

Cubris was acquired by Thales Group in 2018.

By integrating new technology with existing operational systems, this system upgrade will offer real-time speed advice to train drivers on the Elizabeth line. This advice, calculated onboard from trackside data, helps in adhering to the timetable in the most energy-efficient manner and reduces wear and tear on the trains.

Implemented in collaboration with Transport for London (TfL) and the route’s operator MTR Elizabeth line (MTREL), the GreenSpeed® upgrade will be installed from 2024 across the fleet of 70 specially designed Class 345 Aventra trains, which were built by Alstom in Derby.

“We are pleased to welcome Elizabeth line to the increasing portfolio of GreenSpeed® customers. This underlines Cubris®’ commitment to the green agenda by providing energy efficient driving advice and thereby optimising energy consumption and contributing to the overall customer experience. The UK market is a key market for Cubris®, and we are looking forward to providing our services for many years to come.” Cubris® MD, Claus Vendelsø-Nielsen

“We look forward to delivering this upgrade to TfL and expect that it will enhance what is already an efficient mode of travel. Alongside improved service resilience, GreenSpeed® also helps us make energy savings, by advising drivers when best to accelerate, cruise and coast between stations to save on traction power. Every journey matters, and this work is part of our joint commitment to sustainability.” Alstom’s Signaling Project Manager, Ben Scott

*GreenSpeed® is developed by CUBRIS, a Thales Company based in Denmark.

About Thales

Thales (Euronext Paris: HO) is a global leader in advanced technologies within major domains: Defence & Security, Aeronautics & Space, Digital Identity & Security and Transport. It develops products and solutions that help make the world safer, greener and more inclusive.

The Group invests close to €4 billion a year in Research & Development, particularly in key areas such as quantum technologies, Edge computing, 6G and cybersecurity.

Thales has 77,000 employees in 68 countries. In 2022, the Group generated sales of €17.6 billion.

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