Siemens Mobility has won the contract to design, build, integrate and commission tram-train signalling infrastructure for Cardiff Crossrail.
The company will be working on two signalling systems: an on-street running system to manage tram-train operations through the city centre, and a line-of-sight system on the Cardiff Bay Mainline leading to safe, reliable and efficient services linking communities across South Wales.
Cardiff Crossrail Stage E–G (Phase 1A) will establish Wales' first tram network, connecting Cardiff Central and Cardiff Bay by light rail for the first time.
The 28-month project is part of the broader South Wales Metro initiative, which aims to deliver more frequent, faster and greener rail services across the region.
Eventually, Cardiff Crossrail will integrate with the existing Core Valley Lines network, extending the reach of the South Wales Metro.
Matt Kent, director of operations and manufacturing, rail infrastructure, Siemens Mobility UK&I, said: 'Cardiff Crossrail will transform how people move across the city and give access to jobs and growth for some of Wales' most under served communities.
'This project will transform rail travel and transport across South Wales, and we're proud to be delivering the signalling infrastructure that will make it possible, building on our work on the Core Valley Lines Programme.'
Dan Tipper, chief infrastructure officer, Transport for Wales, said: 'Cardiff Crossrail is an exciting step forward for the South Wales Metro, helping us make it easier for people to move around the city and reach the opportunities that matter to them.
'Siemens Mobility has already been a big part of transforming the Core Valley Lines, so we're pleased to continue working together as we bring better, greener and more reliable transport to communities across Cardiff and beyond.'
Siemens Mobility has experience in on-street trams, having maintained Edinburgh's tram infrastructure since the network opened in 2014.
In 2024, a joint consortium of Siemens Mobility and Bilfinger UK was awarded an 11-year, £44.7m contract extension covering the overhead contact line system, 18.5km of track, and signalling systems through to 2035.
