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2017 - July  - Nardi and Revell -  Migration methodologies for CBTC and E 2017 - July - Nardi and Revell - Migration methodologies for CBTC and ERTMS

Federico Nardi BCompE (Hons), RE(OIGenova)

Ansaldo STS Australia Pty Ltd

Howard Revell BA, CEng, RPE (Elec), RPEQ (Elec), HonFIRSE MIEEE

Ansaldo STS Australia Pty Ltd

This paper focuses on the differing aspects of the migration processes and methods involved in transforming existing legacy metro and mainline signalling systems over to CBTC or ERTMS based systems. Three of Ansaldo STS’s current European brownfield projects have been selected to provide scenarios, with each scenario offering a specific approach to a migration methodology that satisfies the particular nature of the project and the needs of the customer organisation funding the project.

The three scenarios relate to three different customer organisations:

  • Stockholm Metro Red Line - CBTC for Storstockholms Lokaltrafik (SL) 

  • Haparandabanan, part of the ESTER Project - ERTMS L2 for Trafikverket 

  • Florence – Rome HSL upgrade - ERTMS L2 for Rete Ferroviaria Italiana (RFI.

These scenarios provide a useful background concerning the need for effective system planning to support efficient design and implementation tasks, without causing disruption to revenue service traffic. However, despite this approach being very well established and practiced in our industry, it is very costly in terms of time, effort and funds and perhaps there is an alternative migration mitigation approach that could be investigated and adopted. These scenarios raise a number of points that may be usefully heeded by others involved in similar migration projects.


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