ERA Railway Terminology visual v0 featured

ERA Railway Terminology Collection

Last updated: 12 March 2026

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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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
Mean useful voltage train	Energy	TSI	Commission Regulation (EU) No 1301/2014 of 18 November 2014 on the technical specifications for interoperability relating to the energy subsystem of the rail system in the Union
Mean useful voltage zone	Energy	TSI	Commission Regulation (EU) No 1301/2014 of 18 November 2014 on the technical specifications for interoperability relating to the energy subsystem of the rail system in the Union
Meaning	International Standard	ISO	ISO 7001:2023(en) Graphical symbols — Registered public information symbols
Measurement	SMS Safety Culture Human and Organisational Factor	ISO	ISO 9000:2015(en) Quality management systems — Fundamentals and vocabulary	Latest release
Measurement	SMS Safety Culture Human and Organisational Factor	ISO	ISO 45001:2018(en) Occupational health and safety management systems — Requirements with guidance for use	Latest release
Measurement	SMS Safety Culture Human and Organisational Factor	ISO	ISO 55001:2024(en) Asset management — Asset management system — Requirements	Latest release
Measurement	SMS Safety Culture Human and Organisational Factor	ISO	ISO 22301:2019(en) Security and resilience — Business continuity management systems — Requirements	Latest release
Measurement management system	SMS Safety Culture Human and Organisational Factor	ISO	ISO 9000:2015(en) Quality management systems — Fundamentals and vocabulary	Latest release
Measurement process	SMS Safety Culture Human and Organisational Factor	ISO	ISO 9000:2015(en) Quality management systems — Fundamentals and vocabulary	Latest release
Measuring equipment	SMS Safety Culture Human and Organisational Factor	ISO	ISO 9000:2015(en) Quality management systems — Fundamentals and vocabulary	Latest release
Mechanical characteristics	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)
Mechanically refrigerated wagon	EU Policy	Glossary	Glossary for transport statistics - 6TH EDITION 2026	Latest release
MEDIA	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
MEGC	International Relations	Convention	Convention concerning International Carriage by Rail (COTIF) Appendix C – Regulations concerning the International Carriage of Dangerous Goods by Rail (RID)
Member State organisation	EU Policy	Regulation	Regulation (EU, Euratom) 2024/2509 of the European Parliament and of the Council of 23 September 2024 on the financial rules applicable to the general budget of the Union (recast)
Mental fatigue	SMS Safety Culture Human and Organisational Factor	ISO	ISO 10075-1:2017(en) Ergonomic principles related to mental workload — Part 1: General issues and concepts, terms and definitions	Latest release
Mental satiation	SMS Safety Culture Human and Organisational Factor	ISO	ISO 10075-1:2017(en) Ergonomic principles related to mental workload — Part 1: General issues and concepts, terms and definitions	Latest release
Mental strain	SMS Safety Culture Human and Organisational Factor	ISO	ISO 10075-1:2017(en) Ergonomic principles related to mental workload — Part 1: General issues and concepts, terms and definitions	Latest release
Mental stress	SMS Safety Culture Human and Organisational Factor	ISO	ISO 10075-1:2017(en) Ergonomic principles related to mental workload — Part 1: General issues and concepts, terms and definitions	Latest release
MEP	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

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