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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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The file you will get by clicking the "Download the full Terminology" button below is in CSV format. To convert it to a readable Excel file:

1. Download the CSV file
2. Open a blank Excel sheet
3. Go to Data → Get Data from CSV → select the CSV file you just downloaded
4. The Excel file will be generated (without any encoding issues)

Starting with "I" (523)

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

Immediate level transition order

ERTMS

Technical Document

ERTMS/ETCS - Glossary of Terms and Abbreviations - version : 4.0.0 - date 05/07/2023

IMO

EU Policy

Glossary

Glossary for transport statistics - 6TH EDITION 2026

IMO

International Relations

Convention

Convention concerning International Carriage by Rail (COTIF) Appendix C – Regulations concerning the International Carriage of Dangerous Goods by Rail (RID)

IMO

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

IMP

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

Impact

Freight

Glossary

Transport of dangerous goods. Risks Management Framework. Framework glossary v. 1.0/2018

Impact

SMS Safety Culture Human and Organisational Factor

ISO

ISO 22301:2019(en) Security and resilience — Business continuity management systems — Requirements

Latest release

Impact of the environment on the vehicle

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)

Impact of the vehicle on the environment

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)

Impartiality

International Standard

ISO

ISO/IEC 17025:2017(en) General requirements for the competence of testing and calibration laboratories

Impartiality

International Standard

ISO

ISO/IEC 17065:2012(en) Conformity assessment — Requirements for bodies certifying products, processes and services

Impartiality

International Standard

ISO

ISO/IEC 17020:2012(en) Conformity assessment — Requirements for the operation of various types of bodies performing inspection

Impartiality

EU Policy

Regulation

Regulation (EC) No 223/2009 of the European Parliament and of the Council of 11 March 2009 on European statistics and repealing Regulation (EC, Euratom) No 1101/2008 of the European Parliament and of the Council on the transmission of data subject to statistical confidentiality to the Statistical Office of the European Communities, Council Regulation (EC) No 322/97 on Community Statistics, and Council Decision 89/382/EEC, Euratom establishing a Committee on the Statistical Programmes of the European Communities

Impartiality

International Standard

ISO

ISO/IEC 17021-1:2015(en) Conformity assessment — Requirements for bodies providing audit and certification of management systems — Part 1: Requirements

Implementation plan

Freight

Regulation

Regulation (EU) No 913/2010 of the European Parliament and of the Council of 22 September 2010 concerning a European rail network for competitive freight

Implementation plan (IP)

RNE Glossary

Glossary

RNE Glossary - NS_CID_Glossary_2025

Implementing rules

EU Policy

Glossary

EU budget glossary - A list of the most common words and useful terms concerning the EU budget

Importer

ERTMS

Directive

Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC

Importer

Single Market Mutual Recognition Conformity Assessment

Regulation

Regulation (EC) No 765/2008 of the European Parliament and of the Council of 9 July 2008 setting out the requirements for accreditation and repealing Regulation (EEC) No 339/93

Importer

Single Market Mutual Recognition Conformity Assessment

Decision

Decision No 768/2008/EC of the European Parliament and of the Council of 9 July 2008 on a common framework for the marketing of products, and repealing Council Decision 93/465/EEC