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 "M" (337)

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
Motor car	International Standard	ISO	ISO/DIS 22575(en) Railway applications — General terms and definitions
Motor energy	EU Policy	Glossary	Eurostat Transport Glossary on web
Motor Vehicle	SERA_EU Transport	Directive	Council Directive 96/53/EC of 25 July 1996 laying down for certain road vehicles circulating within the Community the maximum authorized dimensions in national and international traffic and the maximum authorized weights in international traffic
Motorway	EU Policy	Glossary	Eurostat Transport Glossary on web
MoU	Entity in Charge of Maintenance	Application Guide	Guidance on ECM Certification process Guide for the application of Article 14 of Directive (EU) 2016/798 and Commission Implementing Regulation (EU) No 2019/779 on a system of certification of entities in charge of maintenance for vehicles. Version 9.0 on 01/03/2021
MoU	International Standard	EU Technical Document	CEN CENELEC ABBRAVIATION ACRONYM 2025	Latest release
Moveable step	Persons with Reduced Mobility	Regulation	Commission Regulation (EU) No 1300/2014 of 18 November 2014 on the technical specifications for interoperability relating to accessibility of the Union's rail system for persons with disabilities and persons with reduced mobility.
Movement authority	ERTMS	Technical Document	ERTMS/ETCS - Glossary of Terms and Abbreviations - version : 4.0.0 - date 05/07/2023
Movement Authority (MA)	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
Movement Authority (MA)	ERTMS	ERA Technical Document	Technical Document ERTMS Operational Principles and Rules ERA_ERTMS_OPE_AppA_5 / V 5.0 on 09.04.2019
Moving block	ERTMS	Technical Document	ERTMS/ETCS - Glossary of Terms and Abbreviations - version : 4.0.0 - date 05/07/2023
MP	International Standard	ISO	ISO 3166 (en) - Online Browsing Platform (OBP) Codes for the representation of names of countries and their subdivisions — Part 1: Country code
MPLW	EU Policy	Glossary	Eurostat Transport Glossary on web
MQ	International Standard	ISO	ISO 3166 (en) - Online Browsing Platform (OBP) Codes for the representation of names of countries and their subdivisions — Part 1: Country code
MQ	Telematics Applications for Passenger	Application Guide	TAP TSI Annex B.52 Reservation application_guide - version 1.0 of 06/12/2013
MQMD	Telematics Applications for Passenger	Application Guide	TAP TSI Annex B.52 Reservation application_guide - version 1.0 of 06/12/2013
MR	International Standard	ISO	ISO 3166 (en) - Online Browsing Platform (OBP) Codes for the representation of names of countries and their subdivisions — Part 1: Country code
MR1	Control-Command and Signalling	ERA Technical Document	Guideline - Certification: Restrictions and added functions V1.0 of 18.06.2024
MRA	Entity in Charge of Maintenance	Application Guide	Guidance on ECM Certification process Guide for the application of Article 14 of Directive (EU) 2016/798 and Commission Implementing Regulation (EU) No 2019/779 on a system of certification of entities in charge of maintenance for vehicles. Version 9.0 on 01/03/2021
MRA	International Standard	EU Technical Document	CEN CENELEC ABBRAVIATION ACRONYM 2025	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