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.

Click here for more information

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)

Download the full Terminology

Filter by context

Filter by document type

Filter by latest release

Sort by

Items per page

Starting with "C" (692)

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
Control-Command and Signalling Subsystems	Control-Command and Signalling	Regulation	Commission Implementing Regulation (EU) 2023/1695 of 10 August 2023 on the technical specification for interoperability relating to the control-command and signalling subsystems of the rail system in the European Union and repealing Regulation (EU) 2016/919
Controller	EU Policy	Decision	Commission Decision (EU, Euratom) 2017/46 of 10 January 2017 on the security of communication and information systems in the European Commission
Controller	Data Protection	Regulation	Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016 on the protection of natural persons with regard to the processing of personal data and on the free movement of such data, and repealing Directive 95/46/EC
Controller	Data Protection	Regulation	Regulation (EU) 2018/1725 of the European Parliament and of the Council of 23 October 2018 on the protection of natural persons with regard to the processing of personal data by the Union institutions, bodies, offices and agencies and on the free movement of such data, and repealing Regulation (EC) No 45/2001 and Decision No 1247/2002/EC
Controllers other than Union institutions and bodies	Data Protection	Regulation	Regulation (EU) 2018/1725 of the European Parliament and of the Council of 23 October 2018 on the protection of natural persons with regard to the processing of personal data by the Union institutions, bodies, offices and agencies and on the free movement of such data, and repealing Regulation (EC) No 45/2001 and Decision No 1247/2002/EC
Controlling entity	SERA_EU Transport	Regulation	Commission Implementing Regulation (EU) 2017/2177 of 22 November 2017 on access to service facilities and rail-related services
Controls and indicators	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)
Convention concerning International Carriage by Rail (COTIF)	Infrastructure	Glossary	European Rail Infrastructure Managers
Conventional high-sped railway vehicle	EU Policy	Glossary	Glossary for transport statistics - 5TH EDITION 2019
Conventional railway line	EU Policy	Glossary	Glossary for transport statistics - 5TH EDITION 2019
Conventional railway line	RNE Glossary	Glossary	RNE Glossary - NS_CID_Glossary_2025
Conventional screw coupling and other non-automatic coupling systems	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)
Conventional railway system	International Standard	ISO	ISO/DIS 22575(en) Railway applications — General terms and definitions
Conveyance	International Relations	Convention	Convention concerning International Carriage by Rail (COTIF) Appendix C – Regulations concerning the International Carriage of Dangerous Goods by Rail (RID)
Cooperation mode	Telematics Applications for Freight	TSI	Commission Regulation (EU) No 1305/2014 of 11 December 2014 on the technical specification for interoperability relating to the telematics applications for freight subsystem of the rail system in the European Union and repealing the Regulation (EC) No 62/2006
Coordinated dialogue - dialogue is coordinated	International Standard	ISO	ISO/IEC 10026-1:1998(en) Information technology — Open Systems Interconnection — Distributed Transaction Processing — Part 1: OSI TP Model	Latest release
Coordinating IM	RNE Glossary	Glossary	RNE Glossary - NS_CID_Glossary_2025
Coordinating OSS / C-OSS	RNE Glossary	Glossary	RNE Glossary - NS_CID_Glossary_2025
Coordination	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)
Coordination level	International Standard	ISO	ISO/IEC 10026-1:1998(en) Information technology — Open Systems Interconnection — Distributed Transaction Processing — Part 1: OSI TP Model	Latest release

Common Safety Method
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

Agreement
Application Guide
Certification Scheme
CIT Document
Convention
COTIF Document
Council Recommendation
Decision
Directive
ERA Technical Document
EU Technical Document
Glossary
Guide
International Agreement
ISO
Manual
Recommendation
Regulation
Sectorial Scheme
Technical Document
TSI
Website