Modularisation of · PDF fileDATE (View – slidemaster – slide 1) 1 CER The Voice...

1 DATE (View – slidemaster – slide 1) CER

The Voice of European Railways

Modularisation of ETCS a way to reduce investment and maintenance costs

Piero Petruccioli – Trenitalia/UIC-CER

ERA ERTMS Conference, Lille 13 Nov 2013



Reasons for Modularisation - MoU 2012 Obligations,

Not only Interoperability

MoU art. 21-f , among Specific Objectives:

“To Confirm the Sector Agreement on a number of

measures aimed at speeding up the implementation

of the ETCS, taking economic aspects into account”

MoU art. 35: “...ERTMS specifications are important

both for ensuring the interoperability of the European network and for strengthening ERTMS as

the global standard for worldwide signaling system”

MoU art. 60-c: “...The European Rail sector Associations reiterate their support for...

standardisation of interfaces, such as Train

Interface and DMI, preferably in the form of FFFIS”



Reasons for Modularisation – Complexity Reduction

ETCS remains complicated, both Trackside and

Onboard;

the approval process by NSAs is often long and complex

Complexity + Specific Applications

“Vendor lock-in”

Only few real competition between the

suppliers

Urgent need to facilitate the “proof of safety”

Using Formal Proof methodologies is an

interesting perspective

The cost of ETCS is still an unsolved issue for the ERTMS deployment



Modularisation, Design and Evolution of Sub-Systems

CER recognises and promotes the

modularization of both trackside and

onboard ERTMS sub-system as a concrete way

to reduce costs and duly manage safety.

In order to use a formal specification of the

system which can be proven formally, it is

necessary to describe the system in

functional blocks which can be proven independently

A complete specification of interfaces among

functional blocks is crucial to unbundle their

development one from each other;

The overall safety and consistency of the CCS

subsystems must be guaranteed by the

“System Integrator” (main contractor)



Modularisation and FORMALISATION of Interfaces

Specification – the added value for Sector Users

Avoidance of multiple interpretations of

base specification formal and fully

simulable specifications

Unified application supply, transparent

and controllable by the user

Software formal specification de-coupled

from hardware

Opportunity of full testing of higher SIL

features exhaustive testing with

reduced costs and delays



Modularisation and cost reduction, some figures for

onboard

Cost of one display (including processor unit)

SNCF: 1600 – 16 000 € (annual turnover of 1.4 Mio €)

DB: 700 – 30 000 €

Up to 4 displays per driver’s cab

More than 60 types of displays exist in DB, not being interchangeable.

One type is

sufficient !



Modularisation, achieved results, next Steps

Two important Results, finally available for BL3, 1st Maintenance Release:

Train - EVC Interface (Ss 119 – Ss120)

RBC – RBC interface (Ss 039)

Other expected steps:

Train Display Controller (DMI) – EVC Interface (Unisig Ss121)

Complete onboard Display standard System (CENELEC WG12)

EVC – Odometry (voluntary Rail Standard)

EVC – Balise Transmission Module (voluntary Rail Standard)



Modularisation, Integration on Driver’s desk

Interface ETCS/STM Train Display Controller: care of UNISIG (Ss 121)

Train Display Controller interfaces (): care of CENELEC (WG12)



Modularisation, Integration on the train

Single Cab Coach/Loco, ONE OBU

Standard Loco, ONE OBU

Standard TRAINSET

Conv/HS, TWO OBUs

New TRAINSET concept

Conv/HS, ONE OBU

“extended locomotive”



Modularisation, Integration on the train

Integration at train level of just two interfaces:

1- EVC – Train Display System

and

2- EVC – Balise Transmission Module (via Train Bus)

~ 50 % OFF in the ERTMS Onboard Costs !

Already in operation: Madrid Suburban Line C4



Modularisation and standardisation, technical trends

and opportunities

Retrofit- Specification of RBC–IXL interf:

Keep existing IXL if still valid !

INESS project

FORMAL SPECS project

New Projects-Integration of RBC and IXL:

ERTMS Regional

larger scale too?

Train Interface (TIU),

useful for new installation as well as retrofit

Still room for adaptations and tech. choices

Train Integrity function still to be addressed



Thank you for your attention!

For further information,

visit our website: www.cer.be

Piero Petruccioli – Trenitalia/UIC

CER CCS-Support Group chairman

Tel: +33 1 44 49 20 65

Email: [email protected]

http://www.cer.be/

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