European Union Agency for Railways

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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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

Starting with "D" (379)

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

DMI

Control-Command and Signalling

Application Guide

GUI/CCS TSI/2023 Version 1.0 17/06/2024 Guide for the application of the CCS TSI 2023/1695 In accordance with Article 19(3) of Regulation (EU) 2016/796 of the European Parliament and of the Council of 11 May 2016

DMI

Freight

Glossary

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

DMI

ERTMS

ERA Technical Document

Technical Document ERTMS Operational Principles and Rules ERA_ERTMS_OPE_AppA_5 / V 5.0 on 09.04.2019

DMI

RNE Glossary

Glossary

RNE Glossary - NS_CID_Glossary_2025

DMI

Vehicles / VA

Application Guide

Application Guide for the European register of authorised types of railway vehicles (ERATV) - v.5.7 on09.04.2025

DMP

Freight

Glossary

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

DNS

ERTMS

Technical Document

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

DNS service provider

Security

Directive

Directive (EU) 2022/2555 of the European Parliament and of the Council of 14 December 2022 on measures for a high common level of cybersecurity across the Union, amending Regulation (EU) No 910/2014 and Directive (EU) 2018/1972, and repealing Directive (EU) 2016/1148 (NIS 2 Directive)

DO

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

doa

International Standard

EU Technical Document

CEN CENELEC ABBRAVIATION ACRONYM 2025

Document

EU Policy

Regulation

Regulation (EC) No 1049/2001 of the European Parliament and of the Council of 30 May 2001 regarding public access to European Parliament, Council and Commission documents

Document

SMS Safety Culture Human and Organisational Factor

ISO

ISO 9000:2015(en) Quality management systems — Fundamentals and vocabulary

Latest release

Document available from the IM with precise description of the tunnel

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

Document management

Common Safety Method

Application Guide

Safety management system requirements for safety certification or safety authorisation. Version 1.3 Manuscript completed in April 2021

Document with restriction related to power consumption of specific electric traction unit(s)

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

Document with restriction related to the position of Multiple Traction unit(s) to comply with contact line separation

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

Document with the conditions for the use of eddy current brakes

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

Document with the conditions for the use of magnetic brakes

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

Document with the procedure(s) for static and dynamic route compatibility checks

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

Document with the procedure(s) related to the type of train detection systems declared in 1.1.1.3.7.1.2

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