Satellite technologies and IP telecommunications at the forefront of the ERTMS/ETCS evolution of cost effective solutions

The role of signalling systems is to increase safety, availability and traffic efficiency of railway lines. These targets are the basis for the European Rail Traffic Management System (ERTMS) becoming the industry standard in most new lines and major upgrades worldwide, and for the adoption of Positive Train Control (PTC) in the USA. The new generation of signalling systems will be that which allows further simplifications of wayside infrastructure and higher performance; and will be tailored for the needs of all kinds of railway operators. To ensure cost-effective train localisation and protection over long stretches of semi-deserted areas (typically freight applications with full automation in regions such as Australia, and on low-traffic passenger lines) satellite-based localisation with SIL 4 accuracy combined with IP-based telecommunications networks based on well-consolidated signalling products and platforms, will be available to railway operators. These technology enhancements will result in a major reduction in investment in ground infrastructure and operational costs while maintaining current safety levels. The radio network plays a very important role and often tips the balance in the optimisation of system costs especially when a dedicated network has to be deployed and operated along a rural/remote area with challenging environmental conditions. New IP-based telecommunications networks which combine wireless, cellular and satellite technologies will provide more efficient, seamless connectivity by minimising the need of dedicated infrastructures. In order to optimise signalling infrastructure further, satellite train localisation also becomes a viable alternative by implementing the concept of the virtual balise (already anticipated in the European Train Control System (ETCS) platform) and as Absolute Position reference points in PTC platforms. Ansaldo STS is contracted to deliver leading-edge next-generation signalling solutions based on proven signalling products with satellite localisation and IP-based telecommunications networks for the Roy Hill rail netwrok in Australia. Ansaldo STS is also associated with new technologies in a Test Site located in Sardinia, Italy. This has the strong support of Rete Ferroviaria Italiana (RFI), which owns Italy s rail network and major satellite stakeholders such as the European Space Agency (ESA) and the GALILEO Supervisory Authority. This paper will give an overview of the role of satellite geolocalisation and telecommunications for signalling systems, outline the components of the Sardinia-based test site and explore the next frontier of improved traffic efficiency: moving block technology.

Media Info

  • Pagination: 12p. ; PDF
  • Monograph Title: AusRAIL PLUS 2012, rail's role in society, 27-28 November 2012, Canberra, ACT, Australia

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Filing Info

  • Accession Number: 01532201
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Jul 29 2014 12:01PM