Appendix A
ERTMS/ETCS Railway Signalling
Salvatore Sabina, Fabio Poli and Nazelie Kassabian
A.1 Interoperable Constituents
The basic interoperability constituents in the Control-Command and Signalling Subsystems are, respectively, defined in TableA.1 for the Control-Command and Signalling On-board Subsystem [1] and TableA.2 for the Control-Command and Signalling Trackside Subsystem [1].
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. TableA.3 lists the groups of interoperability constituents of the Control-Command and Signalling On-board Subsystem [1]. TableA.4 lists the groups of interoperability constituents of the Control-Command and Signalling Trackside Subsystem [1].
- S. Sabina (
- )
B
Ansaldo STS S.p.A, Via Paolo Mantovani 3-5, 16151 Genova, Italy e-mail: [email protected]
F. Poli Ansaldo STS S.p.A, Via Ferrante Imparato 184, 80147 Napoli, Italy e-mail: [email protected]
N. Kassabian Ansaldo STS S.p.A, Via Volvera 50, 10045 Piossasco Torino, Italy e-mail: [email protected]
© Springer International Publishing AG, part of Springer Nature 2018 L. Lo Presti and S. Sabina (eds.), GNSS for Rail Transportation, PoliTO Springer Series, https://doi.org/10.1007/978-3-319-79084-8
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- Appendix A: ERTMS/ETCS Railway Signalling
Table A.1 Basic interoperability constituents in the Control-Command and Signalling On-board
Subsystem
- 1
- 2
- 3
- 4
- N
- Interoperability constituent IC
- Characteristics
- Specific
requirements to be assessed by reference to Chap.4 [1]
- 1
- ETCS on-board
- Reliability, Availability,
- 4.2.1
Maintainability, Safety (RAMS)
4.5.1
- 4.2.2
- On-board ETCS functionality
(excluding odometry) ETCS and GSM-R air gap interfaces 4.2.5
- – RBC (level 2 and level 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 4.2.6.1 K optional) – GSM-R ETCS Data Only Radio – Odometry
4.2.6.2 4.2.6.3
- 4.2.8
- – Key management system
– ETCS ID Management – ETCS Driver–Machine Interface – Train interface
4.2.9 4.2.12 4.2.2
– On-board recording device Construction of equipment
4.2.14 4.2.16
- 4.2.1
- 2
3
- Odometry equipment
- Reliability, Availability,
Maintainability, Safety (RAMS)
4.5.1
On-board ETCS functionality (only 4.2.2 Odometry) Interfaces – On-board ETCS Construction of equipment Interfaces
4.2.6.3 4.2.16
Interface of External STM
- – On-board ETCS
- 4.2.6.1
(continued)
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Table A.1 (continued)
- 1
- 2
- 3
- 4
- N
- Interoperability constituent IC
- Characteristics
- Specific
requirements to be assessed by reference to Chap.4 [1]
4
56
- GSM-R voice cab radio
- Reliability, Availability,
- 4.2.1
Note: SIM card, antenna, connecting Maintainability, Safety (RAMS) cables and filters are not part of this Note: no requirement for safety interoperability constituent
4.5.1
- Basic communication functions
- 4.2.4.1
- 4.2.4.2
- Voice and operational
communication applications Interfaces
- – GSM-R air gap
- 4.2.5.1
– GSM-R Driver–Machine Interface 4.2.13
- Construction of equipment
- 4.2.16
- 4.2.1
- GSM-R ETCS Data only Radio
- Reliability, Availability,
Note: SIM card, antenna, connecting Maintainability, Safety (RAMS) cables and filters are not part of this Note: no requirement for safety interoperability constituent
4.5.1
- Basic communication functions
- 4.2.4.1
- 4.2.4.3
- ETCS data communication
applications Interfaces – On-board ETCS – GSM-R air gap Construction of equipment
4.2.6.2 4.2.5.1 4.2.16
- 4.2.4.1
- GSM-R SIM card
- Basic communication functions
Construction of equipment
Note: it is the responsibility of the GSM-R network operator to deliver to railway undertakings the SIM cards to be inserted in GSM-R terminal equipment
4.2.16
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Table A.2 Basic interoperability constituents in the Control-Command and Signalling Trackside Subsystem
- 1
- 2
- 3
- 4
- N
- Interoperability
constituent IC
- Characteristics
- Specific
requirements to be assessed by reference to Chap.4 [1]
- 1
- RBC
- Reliability, Availability, Maintainability, Safety
(RAMS)
4.2.1 4.5.1
- 4.2.3
- Trackside ETCS functionality (excluding
communication via Eurobalises, radio in-fill and Euroloop) 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
– data radio communication – Key management system – ETCS-ID Management Construction of equipment
4.2.7.3 4.2.8 4.2.9 4.2.16
- 4.2.1
- 2
- Radio in-fill unit Reliability, Availability, Maintainability, Safety
(RAMS)
4.5.1
- 4.2.3
- Trackside ETCS functionality (excluding
communication via Eurobalises, Euroloop and level 2 and level 3 functionality) ETCS and GSM-R air gap interfaces: only radio communication with train
4.2.5.1
Interfaces – data radio communication – Key management system – ETCS-ID Management – Interlocking and LEU Construction of equipment
4.2.7.3 4.2.8 4.2.9 4.2.3 4.2.16
- 4.2.1
- 3
- Eurobalise
- Reliability, Availability, Maintainability, Safety
(RAMS)
4.5.1
ETCS and GSM-R air gap interfaces: only Eurobalise communication with train
4.2.5.2
Interfaces – LEU – Eurobalise Construction of equipment
4.2.7.4 4.2.16
(continued)
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Table A.2 (continued)
- 1
- 2
- 3
- 4
- N
- Interoperability
constituent IC
- Characteristics
- Specific
requirements to be assessed by reference to Chap.4 [1]
- 4
- Euroloop
- Reliability, Availability, Maintainability, Safety
(RAMS)
4.2.1 4.5.1
ETCS and GSM-R air gap interfaces: only Euroloop communication with train
4.2.5.3
Interfaces – LEU – Euroloop Construction of equipment
4.2.7.5 4.2.16
- 4.2.1
- 5
- LEU Eurobalise Reliability, Availability, Maintainability, Safety
(RAMS)
4.5.1
- 4.2.3
- Trackside ETCS functionality (excluding
communication via radio in-fill, Euroloop and level 2 and level 3 functionality) Interfaces – LEU – Eurobalise Construction of equipment
4.2.7.4 4.2.16
- 4.2.1
- 6
- LEU Euroloop
- Reliability, Availability, Maintainability, Safety
(RAMS)
4.5.1
- 4.2.3
- Trackside ETCS functionality (excluding
communication via radio in-fill, Eurobalise and level 2 and level 3 functionality) Interfaces – LEU – Euroloop Construction of equipment
4.2.7.5 4.2.16
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Table A.3 Groups of interoperability constituents in the Control-Command and Signalling
On-board subsystem
- 1
- 2
- 3
- 4
- N
- Interoperability constituent IC
- Characteristics
- Specific
requirements to be assessed by reference to Chap.4 [1]
- 1
- ETCS on-board Odometry
Equipment
Reliability, Availability, Maintainability, Safety (RAMS)
4.2.1 4.5.1
- 4.2.2
- On-board ETCS functionality
ETCS and GSM-R air gap interfaces 4.2.5
- – RBC (level 2 and level 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 4.2.6.1 K optional) – GSM-R ETCS Data Only Radio – Key management system – ETCS ID Management
4.2.6.2 4.2.8 4.2.9
– ETCS Driver-Machine Interface – Train interface
4.2.12 4.2.2
– On-board recording device Construction of equipment
4.2.14 4.2.16
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Table A.4 Groups of interoperability constituents in the Control-Command and Signalling Trackside Subsystem
- 1
- 2
- 3
- 4
- N
- Interoperability constituent IC
- Characteristics
- Specific
requirements to be assessed by reference to Chap.4 [1]
- 1
- Eurobalise LEU Eurobalise
- Reliability, Availability,
- 4.2.1
Maintainability, Safety (RAMS)
4.5.1
- 4.2.3
- Trackside ETCS functionality
(excluding communication via Euroloop and level 2 and level 3 functionality) ETCS and GSM-R air gap interfaces: only Eurobalise communication with train
4.2.5.2
- Construction of equipment
- 4.2.16
- 4.2.1
- 2
- Euroloop LEU Euroloop
- Reliability, Availability,
Maintainability, Safety (RAMS)
4.5.1
- 4.2.3
- Trackside ETCS functionality
(excluding communication via Eurobalise and level 2 and level 3 functionality) ETCS and GSM-R air gap interfaces: only Euroloop communication with train
4.2.5.3
- 4.2.16
- Construction of equipment
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A.2 Cross-Talk Protected Zone
To define a cross-talk protected zone, let us first provide the definition of the following coordinate system used for the orientation of the Balise and the Antenna Unit of the Eurobalise Transmission System with respect to the rail direction; see Fig. A.1:
• A reference axis in parallel with the rails (the X-axis), • A reference axis at right angles across the rails, and which is level with the top of rails (the Y-axis),
• A reference axis directed upwards, at right angles to the rail plane (the Z-axis).
The Balise has reference marks on each of the six sides that indicate the positions of the three axes, related to the electrical centre of the Balise. The Antenna Unit has reference marks on each of the six sides that indicate the positions of the X-, Y-, and Z-axes, respectively.
Based on such reference axis, TableA.5 provides the definition of the crosstalk protected zone. The complete description of intrinsic cross-talk protection for Eurobalise Transmission System is provided in [2].
Fig. A.1 Eurobalise
Transmission System reference axes
Reference marks of an Antenna Unit.
ZZ
YY
Z
X
X
Electrical centre
Y
X
Positive rotation
Reference marks
of a Balise.
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Table A.5 Definition of cross-talk protected zone
- Type of cross-talk
- Involved equipment
- Zone where cross-talk shall
not occur
- Lateral (direction Y)
- One Balise and one antenna
unit
1.4m or more between the Balise and the antenna unit (related to the Z reference marks)
- Lateral (direction Y)
- One or two Balises and two
antenna units
3.0m or more between the cross-talk Balise and the interfered antenna unit (related to the Z reference marks)
- Vertical (direction Z)
- One Balise and one antenna
unit
4.8m or more talk Balise related to the X and Y reference marks
- Longitudinal (direction X)
- Two Balises and one antenna Any location of the antenna
unit. 2.6 or more between two unit along the same track as consecutive standard size Balises, and 2.3 or more between two reduced size Balises (related to the Y reference marks). 2.6m applies if combinations of Balise sizes are applicable the Balises
- Longitudinal (direction X)
- One Balise and two antenna
- Any location of the antenna
units. 4.0 or more between two units along the same track as antenna units the Balises
References
1. EU. Commission Regulation (EU) 2016/919 of 27 May 2016 on the technical specification for interoperability relating to the control-command and signalling subsystems of the rail system in the European Union, 27 May 2016
2. UNISIG. SUBSET-036 v.3.1.0 (2016) FFFIS for Eurobalise
Glossary
Automatic Train Protection A safety system that enforces either compliance with or observation of speed restrictions and signal aspects by trains.
Balise Group One or more Balises which are treated as having the same reference location on the track. The telegrams transmitted by all the Balises of a group form a track-to-train message.
Balise Group Coordinate System The means to ensure common location referenc-
ing between on-board and trackside, for all location-based information exchanged through the ERTMS/ETCS transmission media.
Balise Group Location reference Location of Balise number 1 in a Balise group.
It is the origin of the Balise group coordinate system. Expectation window The interval between the outer limits to accept a Balise group. Fail-safe A design philosophy which results in any expected failure maintaining or placing the equipment in a safe state.
Last Relevant Balise Group The LRBG is used as a common location reference between the ERTMS/ETCS on-board and trackside equipments in levels 2 and 3.
LevelThedifferentERTMS/ETCSapplicationlevelsareawaytoexpressthepossible operating relationships between track and train. Level definitions are related to the trackside equipment used, to the way the trackside information reaches the on-board units and to which functions are processed in the trackside and in the on-board equipment, respectively.
Linking A functionality to protect against missing data from BALISE GROUPS by announcing them in advance through LINKING INFORMATION and by checking whether they have been read within a certain EXPECTATION WINDOW.
Mission Any train movement started under the supervision of an ERTMS/ETCS on-board equipment in one the following modes: FS, LS, SR, OS, NL, UN or SN. The ETCS mission is ended when any of the following modes is entered: SB, SH.
© Springer International Publishing AG, part of Springer Nature 2018 L. Lo Presti and S. Sabina (eds.), GNSS for Rail Transportation, PoliTO Springer Series, https://doi.org/10.1007/978-3-319-79084-8
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- Glossary
Mode An operating state of the ERTMS/ETCS on-board equipment with a specified split of operational responsibilities between the ERTMS/ETCS system and the driver.
Movement Authority Permission for a train to run to a specific location within the constraints of the infrastructure.
Moving block A block whose length is defined by the position of the train occupying the section of track ahead. The minimum block length would be from the rearmost part of the occupying train to a point on the track where, if the train braked from its current speed, the front of the occupying train would be when the train came to a stand.
Radio Block Centre A centralised safety unit that receives train position information via radio and sends movement authorities via radio to trains.
Spot Transmission Transmission between trackside and on-board that takes place at discrete locations.
Track description Information complementing the Movement Authority and providing as a minimum the static speed profile and gradient profile. Optionally, it can contain axle load profile, track conditions, route suitability data, areas where shunting is permitted, etc.
Train data Defined set of data which gives information about the train. Data that characterises a train and which is required by ERTMS/ETCS in order to supervise a train movement.
Train detection The proof of the presence or absence of trains on a defined section of line.
Train integrity The level of belief in the train being complete and not having left coaches or wagons behind.
Train movement When vehicles are moved with train data available, as a rule from station to station, and as a rule under the authority of proceed aspects from main signals, or similar procedures.
Train position information The train position information defines the position of the train front in relation to a Balise group, which is called Last Relevant Balise Group (LRBG).