L 344 Official Journal of the European Union 7.1.2015 DECISIONS COMMISSION DECISION (EU) 2015/14 of 5 January 2015 amending Decision 2012/88/EU on the technical specification for interoperability relating to the control-command and signalling subsystems of the trans-European rail system (notified under document C(2014) 9909) (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 intero- perability of the rail system within the Community (*), and in particular Article 6 thereof, Whereas: (1)  With Decision C(2010) 2576 (%), the Commission gave the European Railway Agency (the Agency) a mandate to develop and review the technical specifications for interoperability (TSI) with a view to extending their scope to the entire rail system in the Union in accordance with Article 1(4) of Directive 2008/57/EC. On 10 January 2013 the Agency submitted its recommendation amending the TSI relating to the control-command and signalling subsystems of the trans-European rail system. (2)  According to Article 8(4) of Directive 2008/57/EC on TSI scope extension, a Member State should not apply the revised TSI in the case of projects at an advanced stage of development or subject to a contract in the course of performance, which was out of the scope of the previous TSL (3)  The revised control-command and signalling TSI (CCS TSI) should apply to networks with 1 435 mm, 1520 mm, 1 524 mm, 1 600 mm, and 1 668 mm nominal track gauge. This would provide interoperability within 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 signalling subsystems and interoper- ability constituents independently of the track gauge. 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 signalling subsystems should therefore be the same for the whole network. (4)  Certain open points related to the compatibility of train detection systems may be closed, taking into account requirements for different track gauges (specification referenced as Index 77 in Annex A). The open point related to safety requirements for ETCS Driver-Machine Interface (DMI) function may be closed and progress have been made to clarify the open point on ‘reliability/availability’. (5)  The provisions on assessment of interoperability constituents and subsystems, in the case where requirements are partially fulfilled, need to be clarified. (6)  1In 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 to the CCS TSI Until the time the specifications related to train interface (FFFIS — Form Fit Functional Interface Specification) have reached, at both sides of the interface, a level of consensus among all stakeholders to be considered as mandatory, the Agency should refer to them in the application guide so that they can be used in call for tenders. () OJL191,18.7.2008,p. 1. (%) Commission Decision C(2010) 2576 final of 29 April 2010 concerning a mandate to the European Railway Agency to develop and review Technical Specifications for Interoperability with a view to extending their scope to the whole rail system in the European Union.