ERA Railway Terminology visual v0 featured

ERA Railway Terminology Collection

Last updated: 5 December 2025.

The ERA Railway Terminology Collection gathers terms and abbreviations that are contained in the EU legal framework for railway, technical documents produced by bodies which are engaged in the development of important evolution in the railway system and other relevant glossaries.

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Starting with "N" (282)

Disclaimer
ERA Railway Terminology Collection is a consultation tool, developed to support the sharing of information through the actors involved in running the Single European Railway Area (SERA). The responsibility for the correctness, completeness, accuracy, or reliability of the information in ERA RTC lays upon the authors of the definitions, as they derive from reference documents having their own preparation and approval flow. Users cannot call ERA liable for the use they make of the content. Please consider that when the collection is exported (.csv) and then printed or converted, it becomes uncontrolled.
Term	Context	Document Type	Origin document
NEK	International Standard	EU Technical Document	CEN CENELEC ABBRAVIATION ACRONYM 2025	Latest release
NEMKO	International Standard	EU Technical Document	CEN CENELEC ABBRAVIATION ACRONYM 2025	Latest release
NEN	International Standard	EU Technical Document	CEN CENELEC ABBRAVIATION ACRONYM 2025	Latest release
NET	International Standard	EU Technical Document	CEN CENELEC ABBRAVIATION ACRONYM 2025	Latest release
NET	Freight	Glossary	Transport of dangerous goods. Risks Management Framework. Framework glossary v. 1.0/2018
Net balance	EU Policy	Glossary	EU budget glossary - A list of the most common words and useful terms concerning the EU budget
Net explosive mass (NEM)	International Relations	Convention	Convention concerning International Carriage by Rail (COTIF) Appendix C – Regulations concerning the International Carriage of Dangerous Goods by Rail (RID)
NETA	RNE Glossary	Glossary	RNE Glossary - NS_CID_Glossary_2025	Latest release
NetPaP	RNE Glossary	Glossary	RNE Glossary - NS_CID_Glossary_2025	Latest release
Network	Interoperability	Directive	Directive (EU) 2016/797 of the European Parliament and of the Council of 11 May 2016 on the interoperability of the rail system within the European Union (recast)
Network	SERA_EU Transport	Directive	Directive 2012/34/EU of the Parliament and of the Council of 21 November 2012 establishing a single European railway area (recast)
Network	International Relations	COTIF Document	Uniform Rules concerning the Technical Admission of Railway Material used in International Traffic (ATMF - Appendix G to the Convention) version of 01.11.2023
Network and Corridor Information Portal (NCI)	RNE Glossary	Glossary	RNE Glossary - NS_CID_Glossary_2025	Latest release
Network and information system	Security	Directive	Directive (EU) 2022/2555 of the European Parliament and of the Council of 14 December 2022 on measures for a high common level of cybersecurity across the Union, amending Regulation (EU) No 910/2014 and Directive (EU) 2018/1972, and repealing Directive (EU) 2016/1148 (NIS 2 Directive)
Network and information system	Interoperability	Regulation	Regulation EU) 2024/903 of the European Parliament and of the Concil of 13 March 2024 laying down measures for a high level of public sector interoperability across the Union.
Network characteristics	Interoperability	Recommendation	2014/897/EU: Commission Recommendation of 5 December 2014 on matters related to the placing in service and use of structural subsystems and vehicles under Directives 2008/57/EC and 2004/49/EC of the European Parliament and of the Council
Network ETA (NETA)	RNE Glossary	Glossary	RNE Glossary - NS_CID_Glossary_2025	Latest release
Network of Representative Bodies (NRB)	Infrastructure	Glossary	European Rail Infrastructure Managers
Network PaP (NetPaP)	Withdrawn	Glossary	RNE Glossary - NS_CID_Glossary_2025	Latest release
Network project	Interoperability	Recommendation	2014/897/EU: Commission Recommendation of 5 December 2014 on matters related to the placing in service and use of structural subsystems and vehicles under Directives 2008/57/EC and 2004/49/EC of the European Parliament and of the Council

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Conformity Assessment
Control-Command and Signalling
Data Protection
Energy
Entity in Charge of Maintenance
ERTMS
EU Policy
Freight
Human and Organisational Factor
Infrastructure
International Relations
International Standard
Interoperability
Noise
Operation
Persons with Reduced Mobility
Railway Tunnels
Registers
Regulation
RNE Glossary
Safety / SSC-SA
Security
SERA_EU Transport
Single Market Mutual Recognition Conformity Assessment
Telematics Applications for Freight
Telematics Applications for Passenger
Vehicles / VA
Withdrawn

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