Alstom to Supply ROCS on Halkali-Kapikule High-Speed Line

Alstom has signed a contract to supply a Rigid Overhead Catenary System (ROCS) on RESA A.Ş’ Halkali-Kapikule high-speed line.

The first of its kind to be installed within Türkiye; the ROCS is set to be implemented on the line’s Halkali-Ispartakule section, creating a link between both Türkiye and Europe.

Halkalı-Kapıkule High-Speed Line ROCS contract signing ceremony at Eurasia Rail 2025 Exhibition

The line, which will stretch over a total of 229 kilometres, will include the ROCS across a double-track tunnel each measuring roughly 7 kilometres long and 8.3 metres wide, with the network set to run underneath local neighbourhoods and Küçükçekmece Lake.

Kerem Bugay, Managing Director of Alstom Türkiye, said:
At Alstom, we have been dedicated to developing Türkiye's railway sector for over 70 years. This new contract with RESA A.Ş. marks another important milestone, combining our global expertise and strong local team. We connect local partners to opportunities arising from Alstom's projects around the world. Moving forward, we will continue to invest and collaborate to support Türkiye's vision for rail transportation.

The catenary system will be manufactured at Alstom’s facility in Valmadrera (Lecco), Italy, and has been specifically developed for both confined spacess and tunnel retrofits, featuring an aluminium conductor profile combined with a copper contact wire. The system’s design is also highly fire-resistant, and is capable of integrating with existing lines, with the ability to accommodate varying supply voltages.

Once complete, the Halkalı-Kapıkule High-Speed Train Line is expected to boost passenger transport by 80% and increase freight transport by 45% and act as a key part of the Trans-European Transport Network (TEN-T).

Serkan Atalar, Managing Director of RESA A.Ş. said:
As RESA A.Ş., we have been serving the railway sector in our country for long years. With the construction of the Rigid Catenary System for the Halkalı – Ispartakule High-Speed Train Project, which we have undertaken as a turnkey project, we are adding another milestone to our services. This project holds great significance as it will be the first high-speed train project in Türkiye to implement a rigid catenary system, and we are especially proud to be the first company in our country to carry this out.

We are pleased to elevate our strong collaboration with Alstom to a new level through the Halkalı – Ispartakule High-Speed Train Project, following the ongoing Ümraniye – Ataşehir – Göztepe and Gebze – Darıca Metro Projects.