EN    EN  
 EUROPEAN  
COMMISSION 
Brussels, XXX   
[…](2014) XXX  draft 
  
COMMISSION DECISION 
of XXX  
amending Commission Decision 2012/88/EU on the technical specification for 
interoperability relating to th e control-command and signalling subsystems of the trans-
European rail system  
(Text with EEA relevance) 
  
EN 2   EN COMMISSION DECISION 
of XXX  
amending Commission Decisi on 2012/88/EU on the technical specification for 
interoperability relating to the control-co mmand and signalling subsystems of the trans-
European rail system  
(Text with EEA relevance) 
THE EUROPEAN COMMISSION, 
Having regard to the Treaty on the Functioning of the European Union, Having regard to Directive 2008/57/EC of the European Parliament and of the Council of 
17 June 2008 on the interope rability of the rail system within the Community
1, and in 
particular Article 6 thereof, 
Whereas: (1) With Decision C(2010) 2576
2, the Commission gave the European Railway Agency 
(the Agency) a mandate to develop and re view the technical specifications for 
interoperability (TSI) with a view to extendi ng their scope to the entire rail system in 
the Union. On 10 January 2013 the Agency submitted its recommendation amending to the TSI relating to the control-command and signalling subsystems of the trans-
European rail system. 
(2) The revised control-command a nd signaling TSI (CCS TSI) should 
apply to networks 
with 1435 mm, 1520 mm, 1524 mm, 1600 mm, and 1668 mm nominal track gauge. This 
would provide interoperability w ithin one-track-gauge systems and make it possible to 
develop and operate vehicles for multiple metric gauges. It would also make it possible to develop and use control- command and signaling subsystems and 
interoperability constituents i ndependently of the track gauge. 
(3) A high percentage of vehicles run both on the trans-European rail network and on the 
off-TEN rail network. The parameters of the on-board and the track-side control-
command and signaling subsystems should th erefore be the same for the whole 
network. 
(4) The open point on 'reliability/availability' and certain open points related to the 
compatibility of train detection system s may be closed, taking into account 
requirements for different track gauges (spe cification referenced as Index 77 in Annex 
A of the CCS TSI). 
(5) The provisions on assessment if requirement s are partially fulfilled need to be 
clarified. 
                                                
 
1 OJ L 191, 18.7.2008, p. 1. 
2 Commission Decision C(2010) 2576 final of 29 April 2010 concerning a mandate to the European 
Railway Agency to develop and review Technical Sp ecifications for Interoperability with a view to 
extending their scope to the whole rail system in the European Union  
EN 3   EN (6) In its role of system authority for the European Rail Traffic Management System 
(ERTMS), the Agency has prepared an update of the mandatory ERTMS 
specifications referenced in Annex A of the CCS TSI. 
(7) Errors have been detected in the text of Commission Decision 2012/88/EC3 and need 
to be corrected. 
(8) The measures provided for in this Decision are in conformity with the opinion of the 
Committee established in accordance with Article 29(1) of Directive 2008/57/EC, 
HAS ADOPTED THIS DECISION:  
Article 1 
Decision 2012/88/EU is amended as follows: 
(1) The title is replaced by the following: “on the technical specification for 
interoperability relating to the contro l-command and signalling subsystems”. 
(2) Annex III is amended as follows: 
(a) The following text is added at the end of section 1.1.: 
"This TSI is applicable to contro l-command and signalling track-side 
Subsystems of the rail network define d in the section 1.2. (Geographical scope) 
of this TSI and to the control-command and signalling on-board subsystems of 
vehicles which are (or are intended to be ) operated on it. These vehicles are of 
one of the following types (as defined in Annex I sections 1.2. and 2.2. of Directive 2008/57/EC):  
(1) self-propelling thermal or electric trains;  
(2) thermal or electric traction units;  
(3) passenger carriages, if equipped with a driving cab;  
(4) mobile railway infrastructure construction and maintenance equipment, if 
equipped with a driving cab  and intended to be used in transport mode on 
its own wheels."; 
(b) The text of section 1.2. is replaced by the following: 
'the geographical scope of this TSI is the network of the whole rail system, 
composed of:  
(1) the trans-European conventional rail system network (TEN) as described 
in Annex I section 1.1 “Netwo rk” of Directive 2008/57/EC; 
(2) the trans-European high-speed rail sy stem network (TEN) as described in 
Annex I section 2.1 “Network” of Directive 2008/57/EC;  
(3) other parts of the network of th e whole rail system, following the 
extension of scope as described in  Annex I section 4 of Directive 
2008/57/EC.  
and excludes the cases referred to in Article 1(3) of Directive 2008/57/EC. 
                                                
 
3  Commission Decision 2012/88/EU of 25 January 2012 on the technical specification for interoperability 
relating to the control-command and signalling subsys tems of the trans-European rail system (OJ L 51, 
23.2.2012, p. 1)  
EN 4   EN The TSI shall apply to networks  with 1435 mm, 1520 mm, 1524 mm, 1600 mm 
and 1668 mm track gauges.'; 
(c) In the table of section 4.1., "4.2.1" is a dded to the basic parameters related to 
control-command and signalling trac k-side for train protection; 
(d) The text of section 4.2.1.2 is replaced by the following text: 
'4.2.1.2 Availability/Reliability This section refers to the occurrence of failure modes not causing safety 
hazards but creating degraded situati ons, the management of which could 
decrease the overall safety of the system. 
In the context of this parameter, “failu re” means the termina tion of the ability 
of an item to perform a required f unction with the required performance and 
“failure mode” means the effect by which the failure is observed. 
Operators must be given all the informa tion they need to define appropriate 
procedures for managing degraded situations, as follows:  
The technical file accompanying the EC declaration of verification for an on-
board or track-side CCS subsystem shall contain the calculated availability/reliability values related to failure modes having an impact on the 
capability of the CCS subsystem to supe rvise the safe movement of one or 
more vehicles or to es tablish radio voice comm unication between traffic 
control and the train drivers. 
Without prejudice to the possibility of tailo ring the availability/reliability of 
CCS subsystems to their intended use by means of the contracts between infrastructure managers and railway unde rtakings and of performance schemes 
according to Directive 2012/34/EU of the European Parliament and of the Council
4, where no redundancy is implemented compliance with the following 
calculated values shall be ensured : 
(1) mean time of at least 10000 hours be tween failures of a CCS on-board 
subsystem requiring the isolation of  the train protection functions;  
(2) mean time of at least 10000 hours be tween failures of a CCS on-board 
subsystem preventing radio voice comm unication between traffic control 
and the train driver. 
The level of risk and the respect of the availability/reliability values used to 
define procedures for managing degraded  situations shall be monitored during 
the life of the subsystems; the maintena nce requirements set out in section 4.5. 
(Maintenance rules) shall be respected.' 
(e) The following text is added at the end of section 6.1.1.: 
'With regard to checking if essential requirements are fulfilled by checking 
compliance with the basic parameters, a nd without prejudice to the obligations 
set out in Chapter 7 of this TS I, control-command and signalling 
interoperability constituents and s ubsystems that do not implement all 
functions, performance and interfaces as  specified in Chapter 4 (including the 
specifications referred to in Annex A), can  obtain EC certificates of conformity 
                                                 
4 Directive 2012/34/EU of the European Parliament and of the Council of 21 November 2012 
establishing a single European railway area (OJ L 343, 14.12.2012, p. 32)  
EN 5   EN or, respectively, EC certificates of ve rification, under the following conditions 
for issuing and using the certificates: 
(1) The applicant for EC verification of  a track-side control-command and 
signalling subsystem is responsib le for deciding which functions, 
performance and interfaces need to  be implemented to meet the 
objectives for the service and to  ensure that no requirements 
contradicting or exceeding the TSIs are exported to the on-board control-command and signalling subsystems; 
(2) The operation of an on-board control-command and signalling 
subsystem, that does not implement all functions, performance and interfaces specified in this TSI, may be subject to conditions or 
restrictions due to compatibility and/ or safe integration with track-side 
control-command and signalling subsystems. The applicant for EC verification is responsible for ensuring that the technical file provides all 
the information that an operator needs to identify such conditions and restrictions. 
(3) The Member State may refuse the placi ng in service, or place conditions 
and restrictions on the operation, of  control-command and signalling 
subsystems that do not implement all functions, performance and interfaces specified in this TSI. 
If some essential requirements are fulfilled by national rules or if a 
control-command and signalling interoperability constituent or subsystem does not implement all functions, performance and interfaces specified in this TSI, the provisi ons of section 6.4.2 shall apply.' 
(f) The Table 6.1 is amended as follows: 'See Annex A, Table A 3' is deleted. 
(g) The text of section 6.4 is replaced by the following: 
'6.4 Provisions in case of the partial fulfilment TSI requirements 
6.4.1. Assessment of parts of control- command and signalling subsystems 
Pursuant to Article 18(5) of the Railway Interoperability Directive, the notified 
body may issue certificates of verification for certain parts of a subsystem, if 
allowed to do so under the relevant TSI. 
As pointed out in section 2.2 (Scope) of this TSI, the track-side control-
command and signalling subsystem contai ns three parts, while the on-board 
control-command and signalling subsystem contains two part s, specified in 
section 4.1 (Introduction). 
A certificate of verification may be issued for each part specified in this TSI; 
the notified body only checks if that particular part fulfils the TSI 
requirements. 
Regardless of which module is chose n, the notified body shall check that: 
(1) the TSI requirements for the part in question have been fulfilled and 
(2) the TSI requirements already assesse d for other parts of the same 
subsystem are still fulfilled. 
6.4.2. Control-command and signalling subs ystems' partial fu lfilment of the 
requirements due to limited application of the TSI.
  
EN 6   EN If some essential requirements are fulf illed by national rules, the EC certificate 
of conformity for an interoperability  constituent and the EC certificate of 
verification for a subsystem shall make pr ecise reference to the parts of this 
TSI whose conformity has been assesse d and the parts whose conformity has 
not been assessed. 
If an interoperability constituent does not implement all functions, performance 
and interfaces specified in this TSI, an EC certificate of conformity may only 
be issued in the following cases: 
(1) the unimplemented functions, interfaces  or performance are not required 
to integrate the interoperability cons tituent into a subsystem for the use 
indicated by the applicant, for example5, 
(a) the on-board ERTMS/ETCS interface to STM if the 
interoperability constituent is intended for installation on vehicles in which no external STM is needed, 
(b) the RBC interface to other RBCs, if the RBC is intended for use in 
an application for which no neighbouring RBCs are planned. 
(2) The EC certificate of conformity for the interoperability constituent 
fulfils all the following requirements: 
(a) it indicates which functions, interfaces or performance are not 
implemented, 
(b) it provides enough information to ma ke it possible to identify the 
conditions under which the interopera bility constituent can be used,  
(c) it provides enough information to ma ke it possible to identify the 
conditions of and restriction on the use that will apply to the interoperability of a s ubsystem incorporating it. 
If a control-command and signalli ng subsystem does not implement all 
functions, performance and interfaces of  this TSI (e.g. because they are not 
implemented by an interoperability cons tituent integrated into it), the EC 
certificate of verification shall indicate which requirements have been assessed 
and shall state the corresponding conditions of and restrictions on the use of the 
subsystem and its compatibility with other subsystems.
 
In any event, notified bodies shall coordinate with the Agency the way in which conditions and limits of use of interoperability constituents and 
subsystems are managed in the relevant certificates and technical files in the 
working group set up under Article 21a (5) of Regulation (EC) No 881/2004 of 
the European Parliament and of the Council
6. 
6.4.3. Intermediate Statement of Verification. If conformity is assessed for parts of s ubsystems specified by the applicant and 
different from the parts allowed by secti on 4.1 (Introduction) of this TSI, or if 
                                                
 
5 The procedures described in this Chapter do not prejudice the possibility of grouping constituents 
together. 
6 Regulation (EC) No 881/2004 of the European Parliament and of the Council of 29 April 2004 
establishing a European Railway Agency (Agency Regulation) ( OJ L 164, 21.6.2004, p. 1)   
EN 7   EN only certain stages of the verification procedure have  been performed, only an 
intermediate statement of ve rification may be issued.' 
(h) In section 7.2.9.7, 'index 65' is replaced by 'index 33'; 
(i) The text of section 7.3.3. is replaced by the following: 
'7.3.3. ERTMS on-board implementation 7.3.3.1. New vehicles Vehicles placed in service after 1 January 2015, shall be equipped with 
ERTMS in line with the set of specifications # 2 listed in Table A2 of Annex A. 
This requirement does not apply to new mobile railway infrastructure 
construction and maintenance equipment,  new shunting locomotives or other 
new non-high speed vehicles, if they are intended to be operated exclusively on 
the off-TEN network and for national or regional cross-border service. 
7.3.3.2. Upgrading and renewal of existing vehicles It is mandatory to fit ERTMS/ETC S on-board existing vehicles if:  
(1) installing any new train protection part of a control-command and 
signalling on-board subsystem on existing high-speed vehicles, or  
(2) upgrading any existing train protecti on part of a control-command and 
signalling on-board subsystem, if this would change the functions, 
performances and/or interoperability -relevant interfaces of the existing 
legacy system. This does not apply to  modifications deemed necessary to 
mitigate safety-related defects in the legacy system. 
This requirement does not apply to mobile  railway infrastructure construction 
and maintenance equipment, shunting locomotives or other non-high-speed vehicles, if they are intended to be  operated exclusively on the off-TEN 
network and for national or regi onal cross-border service. 
7.3.3.3. Additional requirements 
Member States may introduce additional requirements at national level, in 
particular with a view to 
(1) allowing only ERTMS-equipped ve hicles to access ERTMS-equipped 
lines, so that existing national sy stems can be decommissioned;  
(2) requesting that upgraded or renewe d mobile railway infrastructure 
construction and maintenance equipment, shunting locomotives and/or other vehicles, even if intended exclusively for national service or regional cross-border service,  be equipped with ERTMS.' 
(j) Annex A is amended in accordance with the Annex
 to this Decision; 
(k) The table of Annex G is amended as follows: 
(1) The line related to 'Index 28 availability' is deleted; 
(2) The line related to 'Vehicle metal mass' is deleted; 
(3) The line related to 'DC and low frequency components of traction 
current' is deleted.  
EN 8   EN Article 2 
This Decision shall apply from [date of publication + 6 months]. 
This Decision is addressed to the Member States. Done at Brussels, 
 For the Commission 
 Siim KALLAS  Vice-President