UK Rail ETCS Upgrade: GTR, Siemens, ECML Digital Future
GTR and Siemens deploy advanced ETCS on passenger trains, boosting UK rail digitalization and safety.

GTR and Siemens Mobility Deploy Advanced ETCS on Passenger Service
Govia Thameslink Railway (GTR), in collaboration with Siemens Mobility, has achieved a significant milestone in railway digitalization. On July 8th, unit 717020 of the Class 717 fleet successfully completed its inaugural passenger service on the Northern City Line between Finsbury Park and Moorgate, utilizing an updated version of the European Train Control System (ETCS). This achievement, operating ETCS Baseline 3, Release 2 (version 3.6.0), represents a crucial step in modernizing the UK’s rail infrastructure, promising enhanced capacity, improved efficiency, and heightened safety for passengers. The deployment utilizes a more advanced system, upgrading the existing infrastructure from GSM-R (Global System for Mobile Communications – Railway) to GPRS (General Packet Radio Service). This article will explore the implications of this advancement, the technical details of the new ETCS system, and its broader impact on the East Coast Main Line and beyond.
Enhanced Digital Signalling: The Key to Modernization
The deployment of ETCS Baseline 3, Release 2 marks a major advancement in railway signalling technology. This update allows trains to communicate with trackside equipment via GPRS, offering a more flexible and higher-capacity communication channel compared to the legacy GSM-R system. The shift to GPRS connectivity is vital in addressing the increasing demands placed on rail networks, particularly in densely trafficked corridors like the East Coast Main Line (ECML). The ECML is currently undergoing a substantial digital upgrade as part of the East Coast Digital Programme (ECDP), a government-backed initiative designed to modernize signalling and train control systems. This upgrade, spearheaded by Network Rail, will implement digitally signalled services from next year, improving reliability and potentially enabling more trains to run on the same tracks.
ETCS: Benefits for Passengers and the Environment
The implementation of the latest ETCS baseline brings several tangible benefits. Passengers can anticipate more reliable services, thanks to improved network capacity and reduced delays associated with traditional signalling systems. The modernized system contributes to a more sustainable railway by optimizing train operations, potentially leading to lower emissions and reduced energy consumption. Enhanced safety features are also integral to the new ETCS. The “signals-free” environment already operational on the Northern City Line, where in-cab signalling provides real-time information to train drivers, will be extended across the ECML, improving safety and streamlining operations. The new ETCS offers smoother, more reliable journeys for passengers by reducing disruptions and lowering maintenance requirements.
Fleet-Wide Implementation and Broader Industry Impact
The successful deployment on the Northern City Line serves as a crucial validation of the new ETCS system. GTR plans to upgrade all 25 Class 717 trains within the Great Northern fleet in the coming months, ensuring full integration with the advanced system. Furthermore, other operators running services on the ECML are expected to adopt the same ETCS baseline, facilitating interoperability and paving the way for a cohesive, digitally-enabled rail network. This strategy underscores the commitment to a unified approach to signalling modernization across the UK rail sector.
Stakeholder Perspectives: Collaboration for Success
The success of this project highlights the importance of collaboration between industry stakeholders. Jonathan Daniels, Integration Lead for the ECDP at Network Rail, emphasized the significance of the ETCS baseline for the introduction of digitally signalled services on the ECML. Oliver Turner, GTR’s Head of ERTMS (European Rail Traffic Management System, the overarching framework which includes ETCS), highlighted the rapid progress achieved in deploying the updated software and the positive impact it will have on passenger experience. Ben Lane, Siemens Mobility’s Infrastructure Lead and ECDP Project Director, underscored the benefits of ETCS in transforming rail travel and the benefits it is already bringing to the NCL and will also bring to the busiest sections of the ECML.
Conclusion
The successful deployment of ETCS Baseline 3, Release 2 by GTR and Siemens Mobility represents a critical advancement in the digitalization of the UK railway network. This technology promises significant benefits, including increased capacity, improved operational efficiency, and enhanced safety for passengers. The shift from GSM-R to GPRS connectivity provides a more flexible and robust communication channel. The project’s success relies on the collaboration between GTR, Siemens Mobility, and Network Rail. The full adoption of this updated system across the Great Northern fleet and its integration into the broader ECML digital upgrade is expected to have a transformative impact on the efficiency and reliability of rail services. This development sets a standard for other rail operators and underscores the UK’s commitment to modernizing its rail infrastructure. Looking ahead, the implementation of advanced signalling technologies like ETCS will be pivotal in meeting the growing demands on the rail network, contributing to a more sustainable, efficient, and passenger-focused transportation system.
Company Summary
Govia Thameslink Railway (GTR): GTR operates the UK’s largest rail franchise, serving the South East of England. GTR is a key player in the UK rail network, responsible for several major routes and is committed to improving passenger services through innovation and technology adoption, particularly in digital signalling projects.
Siemens Mobility: Siemens Mobility is a global leader in transport solutions, providing a wide range of products, systems, and services. Its expertise includes rolling stock, infrastructure, traffic management systems, and electrification solutions. As a key partner in the ECDP, Siemens Mobility is at the forefront of modernizing the UK’s rail infrastructure.



