Commission Decision of 25 January 2012 on the technical specification for interoperability relating to the control-command and signalling subsystems of the trans-European rail system (notified under document C(2012) 172) (Text with EEA relevance) (2012/88/EU) (repealed)

5. INTEROPERABILITY CONSTITUENTS

5.1. Definition

According to Article 2(f) of the Railway Interoperability Directive, interoperability constituents are ‘any elementary component, group of components, subassembly or complete assembly of equipment incorporated or intended to be incorporated into a subsystem, upon which the interoperability of the rail system depends either directly or indirectly. The concept of a constituent covers both tangible objects and intangible objects such as software.’

5.2. List of interoperability constituents

5.2.1. Basic interoperability constituents

The basic interoperability constituents in the Control-Command and Signalling Subsystems are defined in:

1.

Table 5.1.a for the Control-Command and Signalling On-board Subsystem;

2.

Table 5.2.a for the Control-Command and Signalling Track-side Subsystem.

5.2.2. Grouping of interoperability constituents

The functions of basic interoperability constituents may be combined to form a group. This group is then defined by those functions and by its remaining external interfaces. If a group is formed in this way, it shall be considered as an interoperability constituent.

1. Table 5.1.b lists the groups of interoperability constituents of the Control-Command and Signalling On-board Subsystem.

2. Table 5.2.b lists the groups of interoperability constituents of the Control-Command and Signalling Track-side Subsystem.

5.3. Constituents’ performance and specifications

For each basic interoperability constituent or group of interoperability constituents, the tables in Chapter 5 describe:

1.

in column 3, the functions and interfaces. Note that some interoperability constituents have functions and/or interfaces that are optional;

2.

in column 4, the mandatory specifications for the conformity assessment of each function or interface (where applicable) by reference to the relevant section of Chapter 4.

Table 5.1.a Basic interoperability constituents in the Control-Command and Signalling On-board Subsystem

N	Interoperability constituent IC	Characteristics	Specific requirements to be assessed by reference to Chapter 4
1	ERTMS/ETCS on-board	Reliability, Availability, Maintainability, Safety (RAMS)	4.2.1 4.5.1
		On-board ETCS functionality (excluding odometry)	4.2.2
		ERTMS/ETCS and GSM-R air gap interfaces	4.2.5
		— RBC (levels 2 and 3)	4.2.5.1
		— Radio in-fill unit (optional level 1)	4.2.5.1
		— Eurobalise air gap	4.2.5.2
		— Euroloop air gap (optional level 1)	4.2.5.3
		Interfaces
		— STM (implementation of interface K optional)	4.2.6.1
		— ERTMS/ETCS GSM-R on-board	4.2.6.2
		— Odometry	4.2.6.3
		— Key management system	4.2.8
		— ETCS ID Management	4.2.9
		— ERTMS/ETCS Driver-Machine Interface	4.2.12
		— Train interface	4.2.2
		— On-board recording device	4.2.14
		Physical environmental conditions	4.2.16
2	Odometry equipment	Reliability, Availability, Maintainability, Safety (RAMS)	4.2.1 4.5.1
		On-board ERTMS/ETCS functionality: only Odometry	4.2.2
		Interfaces
		— On-board ERTMS/ETCS	4.2.6.3
		Environmental conditions	4.2.16
3	Interface of External STM	Interfaces
		— On-board ERTMS/ETCS	4.2.6.1
4	GSM-R voice cab radio Note: SIM card, antenna, connecting cables and filters are not part of this interoperability constituent	Reliability, Availability, Maintainability, Safety (RAMS) Note: no requirement for safety	4.2.1 4.5.1
		Basic communication functions	4.2.4.1
		Voice and operational communication applications	4.2.4.2
		Interfaces
		— GSM-R air gap	4.2.5.1
		— GSM-R Driver-Machine Interface	4.2.13
		Environmental conditions	4.2.16
5	GSM-R ETCS Data only Radio Note: SIM card, antenna, connecting cables and filters are not part of this interoperability constituent	Reliability, Availability, Maintainability, Safety (RAMS) Note: no requirement for safety	4.2.1 4.5.1
		Basic communication functions	4.2.4.1
		ETCS data communication applications	4.2.4.3
		Interfaces
		— On-board ERTMS/ETCS	4.2.6.2
		— GSM-R air gap	4.2.5.1
		Environmental conditions	4.2.16
6	GSM-R SIM card	Basic communication functions	4.2.4.1
		Environmental conditions	4.2.16

Table 5.1.b Groups of interoperability constituents in the Control-Command and Signalling On-board Subsystem

This table is an example to show the structure. Other groups are allowed

N	Group of Interoperability constituents	Characteristics	Specific requirements to be assessed by reference to Chapter 4
1	ERTMS/ETCS on-board Odometry equipment	Reliability, Availability, Maintainability, Safety (RAMS)	4.2.1 4.5.1
		On-board ERTMS/ETCS functionality	4.2.2
		ERTMS/ETCS and GSM-R air gap interfaces	4.2.5
		— RBC (levels 2 and 3)	4.2.5.1
		— Radio in-fill unit (optional level 1)	4.2.5.1
		— Eurobalise air gap	4.2.5.2
		— Euroloop air gap (optional level 1)	4.2.5.3
		Interfaces
		— STM (implementation of interface K optional)	4.2.6.1
		— On-board ERTMS/ETCS – GSM-R	4.2.6.2
		— Key management system	4.2.8
		— ETCS-ID Management	4.2.9
		— ERTMS/ETCS Driver Machine Interface	4.2.12
		— Train interface	4.2.2
		— On-board recording device	4.2.14
		Physical environmental conditions	4.2.16

Table 5.2.a Basic interoperability constituents in the Control-Command and Signalling Track-side Subsystem

N	Interoperability constituent IC	Characteristics	Specific requirements to be assessed by reference to Chapter 4
1	RBC	Reliability, Availability, Maintainability, Safety (RAMS)	4.2.1 4.5.1
		Track-side ERTMS/ETCS functionality (excluding communication via Eurobalises, radio in-fill and Euroloop)	4.2.3
		ERTMS/ETCS and GSM-R air gap interfaces: only radio communication with train	4.2.5.1
		Interfaces
		— Neighbouring RBC	4.2.7.1, 4.2.7.2
		— ERTMS/ETCS GSM-R track-side	4.2.7.3
		— Key management system	4.2.8
		— ETCS-ID Management	4.2.9
		Environmental conditions	4.2.16
2	Radio in-fill unit	Reliability, Availability, Maintainability, Safety (RAMS)	4.2.1 4.5.1
		Track-side ERTMS/ETCS functionality (excluding communication via Eurobalises, Euroloop and level 2/3 functionality)	4.2.3
		ERTMS/ETCS and GSM-R air gap interfaces: only radio communication with train	4.2.5.1
		Interfaces
		— ERTMS/ETCS- GSM-R track-side	4.2.7.3
		— Key management system	4.2.8
		— ETCS-ID Management	4.2.9
		— Interlocking and LEU	4.2.3
		Environmental conditions	4.2.16
3	Eurobalise	Reliability, Availability, Maintainability, Safety (RAMS)	4.2.1 4.5.1
		ERTMS/ETCS and GSM-R air gap interfaces: only Eurobalise communication with train	4.2.5.2
		Interfaces
		— LEU – Eurobalise	4.2.7.4
		Environmental conditions	4.2.16
4	Euroloop	Reliability, Availability, Maintainability, Safety (RAMS)	4.2.1 4.5.1
		ERTMS/ETCS and GSM-R air gap interfaces: only Euroloop communication with train	4.2.5.3
		Interfaces
		— LEU – Euroloop	4.2.7.5
		Environmental conditions	4.2.16
5	LEU Eurobalise	Reliability, Availability, Maintainability, Safety (RAMS)	4.2.1 4.5.1
		Track-side ERTMS/ETCS functionality (excluding communication via radio in-fill, Euroloop and level 2 and level 3 functionality)	4.2.3
		Interfaces
		— LEU – Eurobalise	4.2.7.4
		Environmental conditions	4.2.16
6	LEU Euroloop	Reliability, Availability, Maintainability, Safety (RAMS)	4.2.1 4.5.1
		Track-side ERTMS/ETCS functionality (excluding communication via radio in-fill, Eurobalise and level 2 and level 3 functionality)	4.2.3
		Interfaces
		— LEU – Euroloop	4.2.7.5
		Environmental conditions	4.2.16

Table 5.2.b Groups of interoperability constituents in the Control-Command and Signalling Track-side Subsystem

This table is an example to show the structure. Other groups are allowed

N	Group of interoperability constituents	Characteristics	Specific requirements to be assessed by reference to Chapter 4
1	Eurobalise LEU Eurobalise	Reliability, Availability, Maintainability, Safety (RAMS)	4.2.1 4.5.1
		Track-side ERTMS/ETCS functionality (excluding communication via Euroloop and level 2 and level 3 functionality)	4.2.3
		ERTMS/ETCS and GSM-R air gap interfaces: only Eurobalise communication with train	4.2.5.2
		Environmental conditions	4.2.16
2	Euroloop LEU Euroloop	Reliability, Availability, Maintainability, Safety (RAMS)	4.2.1 4.5.1
		Track-side ERTMS/ETCS functionality, (excluding communication via Eurobalise and level 2 and level 3 functionality)	4.2.3
		ERTMS/ETCS and GSM-R air gap interfaces: only Euroloop communication with train	4.2.5.3
		Environmental conditions	4.2.16