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Cambrian Lessons Learnt

Learn about the risks and considerations in track side design for ERTMS implementation, including speed changes, block marker distances, operational issues, GSM-R concerns, speed profiles, and lessons from the Netherlands' Hanzelijn line.

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Cambrian Lessons Learnt

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  1. Cambrian Lessons Learnt Part 4

  2. Track side design (1) • Risk of loss of flexibility in operational moves during application design! • Learn how to read scheme plans in line with ERTMS and its workings • Need to consider: • Speed changes over short distances • Speed changes approaching an end of authority (EoA) • Release speeds approaching EoA when a lower speed applies beforehand • Location of balises when approaching speed changes

  3. Track side design (2) • Distance between block markers • Location of awakening areas • Line speed over points and crossings • Location of all permissive movements will require OS mode areas • Time taken to do simple moves extended

  4. Operational issues • Robustness of design during normal working (two cabs open as an example) • In many cases will be learning new train as well as ERTMS • Revised fault and failure modes based around maintaining ERTMS position report • Controlled ability to reset the European Vital Computer (EVC) • Use of SH mode in depots, sidings and on the main line • Mode transition when leaving depots and in service running

  5. GSM-R issues • Arrangements when GSM-R data/voice is turned off for upgrade • Time taken to load data from DMI to GSM-R radio • Five digit GSM-R train reporting number required on driver diagrams • Correct use of three digit location code and use of wild card numbers (99x) • Learning how to read GSM-R voice and data outputs

  6. Speed profile Line speed profile 25 50 90 Draw line speed as a negative 25 50 90

  7. Speed profile on DMI 25 50 90

  8. On the DMI

  9. Example scheme plan 9

  10. Example mode map

  11. Example Sectional Appendix

  12. Example Yellow Notice

  13. ERTMS in Netherlands Hanzelijn line • L2 ETCS overlay on Amsterdam to Utrecht (35km mainline). 4-track mainline used by 75% of NS fleet • Fitted to: • new Hanzelijn line • new high speed line • Rotterdam freight route • UK team wanted to learn lessons from Netherlands compared to GW overlay and links to Thameslink Amsterdam to Utrecht High Speed Line Freight Route

  14. Overlay and other issues • Driving style may change • Drivers to have key /swipe card to use ETCS • Drivers to use DMI as priority and if red signal reported if seen • If transition to L2 does not work then carry on using ATB and no requirement to inform the signaller • Written orders are not used in failure situations • NS have very small overlaps which helps with ETCS fitment • Uses a 4-track route so trains can be rerouted easily in a failure situation

  15. All in it together…

  16. End of Cab SignallingThank You Thoughts? Comments? Questions? 16

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