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Status of Train and Path Cardinality Train-Path

Status of Train and Path Cardinality Train-Path. Planning/TRID TEG, 07/05/2019 FTE, TrID WG, 08/05/2019 Christian Weber, SNCF. Version 0.1 of 04/05/2019. Status of TRAIN and PATH : Usual Path Request. TRAIN Created (not yet Path Request ). TRAIN Cancelled (not kept ).

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Status of Train and Path Cardinality Train-Path

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  1. Status of Train and PathCardinality Train-Path Planning/TRID TEG, 07/05/2019 FTE, TrID WG, 08/05/2019 Christian Weber, SNCF Version 0.1 of 04/05/2019

  2. Statusof TRAIN and PATH : Usual Path Request TRAIN Created(not yet Path Request) TRAIN Cancelled(not kept) TRAIN Suspended(kept) TRAIN PathDetailsMessage TypeOfInfo=21 (no alternative available) PathRequestMessage OnDemandPath=Act./Desact. PathDetailsMessage OnDemandPath=Desact. PathDetailsMessage OnDemandPath=Act. PathSectionNotificationMessageTypeOfInfo = 50 (activatepath) Desactivated PATH NO PATH AVAILABLE Activated PATH PathSectionNotificationMessageTypeOfInfo = 51 (desactivatepath) The TRAIN iscreated (with a givencalendar) and a PATH REQUEST isintroduced (for an activated or desactivatedpath) A PATH isproposed(for the entire or partial calendar) and, at the end of the process, isaccepted and booked If no PATH isavailable(for the entire or partial calendar), and if thisstatementisaccepted by the RU, the TRAIN canbe‘Suspended’by the RU (itiskept in the RU IT System waitinganotheropportunity to submit a PATH REQUEST thatcouldhappen or not) The RU canalsodecide to cancel the TRAIN of its RU IT System depending on itsanalysis The status‘TRAIN Suspended’ or ‘TRAIN Cancelled’ is an internal RU process, thereis no need to inform the IM as no PATH wasallocated

  3. Statusof TRAIN and PATH : After Path allocation the links canbechanged (1/2) First possibility : Use of the UpdateLinkMessage TRAIN Cancelled(not kept) TRAIN Suspended(kept) TRAIN UpdateLinkMessage Operation = B (break the link) Procedure = TNC (train not cancelledby default) or TC (train cancelled) Procedure = PK (pathkeptby default) or PNK (path not kept) Activate PATH PATH Cancelled Desactivate PATH Initial link • PROS : • All status of TRAIN (Suspended / Cancelled) and PATH (Kept as Desactivate / Cancelled) are possible by one message • The link TRAIN-PATH isbroken • Applies on the complete or partial calendar and/or on the complete or partial section • CONDITION : • Case TC+PNK needseither a new code (e.g. TPC for ‘Train and Path Cancelled’ or a change in the cardinality to allow 2 elementsProcedure

  4. Statusof TRAIN and PATH : After Path allocation the links canbechanged(2/2) Second possibility : Use of the PathSectionNotificationMessage TRAIN Cancelled(not kept) TRAIN Suspended(kept) TRAIN PathSectionNotificationMessage TypeOfInfo = 51 (desactivatepath, train suspended, linkkept) or 56 (link not kept) PathSectionNotificationMessage TypeOfInfo = 54 (cancel path, train suspended) If needed : UpdateLinkMessage Operation = B (break the link) PathSectionNotificationMessage TypeOfInfo = 55 (desactivatepath, cancel train) PathSectionNotificationMessage TypeOfInfo = 53 (cancel path, cancel train) PATH Cancelled Desactivate PATH Activate PATH Initial link TRAIN and PATH are keptwithTypeOfInfo = 51 (desactivatepath) and the TRAIN isconsequentlysuspended. The link TRAIN-PATH remainsimplicitlyA UpdateLinkMessageis sent to break the link if necessary or create a code 56 (desactivatepath, train suspended, linkbroken) TRAIN Suspended/Kept and PATH Cancelledneeds a new code TypeOfInformation = 54 – Link TRAIN-PATH broken TRAIN Cancelled and PATH Desactivate/Keptneeds a new code TypeOfInformation = 55 – Link TRAIN-PATH broken TRAIN Cancelled and PATH Cancelledneeds a new code TypeOfInformation = 53 – Link TRAIN-PATH broken • PROS : • All status of TRAIN (Suspended / Cancelled) and PATH (Kept as Desactivate / Cancelled) are possible by one message • The link TRAIN-PATH isbroken • Applies on the complete or partial calendar and/or on the complete or partial section • CONDITION : • Create new codes 53 to 56 for the elementTypeOfInformation UpdateLinkMessage and PathSectionNotificationMessage are equivalent (with codes to create) - The use of both messages bringsflexibility

  5. Use of both messages bringsflexibility : cardinality TRAIN-PATH EXAMPLE A train ABC identified by TRID1 receives a path ABC identified by PAID1. After allocation, the RU decides to use the path PAID1 as follows : TRID1 limited to AB on the first part of path PAID1; New train TRID2 on the second part BC of the path PAID1. What is the process to be followed ? Legend : objectslinked TRID1 B C A PAID1 TRID1 PathSectionNotificationMessage Identifiers = TRID1, PAID1TypeOfInfo = 55 (desactivatepath, train cancelled) AffectedSection = BC B C A PAID1 PAID1 Creation by the RU of TRAIN2 on BC identifiedwith TRID2 (TRAIN2 iscompliantwith the PATH on section BC) TRID2 B C UpdateLinkMessage Identifiers = TRID2, PAID1 Type = E (establish the link)TrainInformation/PlannedJourneyLocation = B, C with relevant data PathInformation/PlannedJourneyLocation= B, C TRID2 B C PAID1 TRID2 TRID1 B C A Result PAID1 PAID1 • Just at the end of the path allocation, a TRAIN islinked to 1,n PATH and a PATH to 1 TRAIN • During the lifecycle, a PATH canbelinked to 1,n TRAINS • The cardinality TRAIN-PATH isn,n

  6. Questions Questions on the different change of status of TRAIN and PATH ? Depending on the discussion, introduce two CRs on codes : Add codes 53, 54, 55, 56 for element TypeOfInformation Add code TPC (Train and Path Cancelled) for the element Procedure of UpdateLinkMessage Questions on cardinality ?

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