ERTMS
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ERTMS certification and authorisation  
 
This part of the European Union Agency for Railways  ERTMS website provides information concerning aspects of the certification and authorisation processes dealing with the Control Command and Signalling (CCS) trackside and on-board interoperability constituents (IC) and its Subsystems (SS); also relevant in the framework of the 4th Railway Packet.
In the section, National Technical Rules (NTR) the current snapshot of the national technical rules applied on the CCS on-board Subsystem in the different member states, independent of their notification status, can be found.
The section Certification issues contains the European Union Agency for Railways template for deviations intended as part of the evidence to be presented when applying for an authorisation.