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 "E" (716)

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
End user	Single Market Mutual Recognition Conformity Assessment	Regulation	Regulation (EU) 2019/1020 of the European Parliament and of the Council of 20 June 2019 on market surveillance and compliance of products and amending Directive 2004/42/EC and Regulations (EC) No 765/2008 and (EU) No 305/2011	Latest release
End-of-train signal	Interoperability	Decision	Commission Decision of 30 November 2009 on the reference document referred to in Article 27(4) of Directive 2008/57/EC of the European Parliament and of the Council on the interoperability of the rail system within the Community. (2009/965/EC)
ENE	Interoperability	Application Guide	Application_guide GUI/TSI/2023 Version 1.0 20/12/2023Guide for the application of the Technical Specifications for Interoperability (TSIs)
ENE	Operation	TSI	Commission Implementing Regulation (EU) 2019/773 of 16 May 2019 on the technical specification for interoperability relating to the operation and traffic management subsystem of the rail system within the European Union and repealing Decision 2012/757/EU
ENE	Vehicles / VA	Application Guide	GUI/LOC&PAS TSI/2021 - version 3.0 on 15/02/2021 Guide for the application of the LOC&PAS TSI (Commission Regulation (EU) No 1302/2014 of 18 November 2014 and amended by the Commission Implementing Regulation (EU) 2019/776) In accordance with Article 19(3) of Regulation (EU) 2016/796 of the European Parliament and of the Council of 11 May 2016
ENE	Infrastructure	Application Guide	Guide on the application of the common specifications of the register of Infrastructure - v. 3.1.0 on 31.03.2025	Latest release
ENEA	EU Policy	EU Technical Document	Technical document from the Publications Office of the European Union - ‘Style guide’ Coordination Interinstitutional Style Guide - version on 19.04.2022
ENEC	International Standard	EU Technical Document	CEN CENELEC ABBRAVIATION ACRONYM 2025	Latest release
ENEL	EU Policy	EU Technical Document	Technical document from the Publications Office of the European Union - ‘Style guide’ Coordination Interinstitutional Style Guide - version on 19.04.2022
Energy	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)
Energy (ENE) TSI	Operation	TSI	Commission Implementing Regulation (EU) 2019/773 of 16 May 2019 on the technical specification for interoperability relating to the operation and traffic management subsystem of the rail system within the European Union and repealing Decision 2012/757/EU	Latest release
Energy consumption measurement	Interoperability	Decision	Commission Decision of 30 November 2009 on the reference document referred to in Article 27(4) of Directive 2008/57/EC of the European Parliament and of the Council on the interoperability of the rail system within the Community. (2009/965/EC)
Energy efficiency first	International Relations	Regulation	Regulation (EU) 2021/1153 of the European Parliament and of the Council of 7 July 2021 establishing the Connecting Europe Facility and repealing Regulations (EU) No 1316/2013 and (EU) No 283/2014
Energy supply system (Voltage and frequency)	Infrastructure	Regulation	Commission Implementing Regulation (EU) 2019/777 of 16 May 2019 on the common specifications for the register of railway infrastructure and repealing Implementing Decision 2014/880/EU
Engine	ERTMS	Technical Document	ERTMS/ETCS - Glossary of Terms and Abbreviations - version : 4.0.0 - date 05/07/2023
Engine Orientation	ERTMS	Technical Document	ERTMS/ETCS - Glossary of Terms and Abbreviations - version : 4.0.0 - date 05/07/2023
ENIAC	EU Policy	EU Technical Document	Technical document from the Publications Office of the European Union - ‘Style guide’ Coordination Interinstitutional Style Guide - version on 19.04.2022
ENIM	RNE Glossary	Glossary	RNE Glossary - NS_CID_Glossary_2025	Latest release
ENISA	EU Policy	EU Technical Document	Technical document from the Publications Office of the European Union - ‘Style guide’ Coordination Interinstitutional Style Guide - version on 19.04.2022
ENQ	International Standard	EU Technical Document	CEN CENELEC ABBRAVIATION ACRONYM 2025	Latest release

Common Safety Method
Conformity Assessment
Control-Command and Signalling
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Energy
Entity in Charge of Maintenance
ERTMS
EU Policy
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RNE Glossary
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Single Market Mutual Recognition Conformity Assessment
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