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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Starting with "D" (379)

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
DE	ERTMS	Glossary	ERTMS/ATO Glossary - version 2 on 05.07.2023
De-commitment (see cancellation of appropriations)	EU Policy	Glossary	EU budget glossary - A list of the most common words and useful terms concerning the EU budget
De-registration	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
De-registration	ERTMS	ERA Technical Document	Technical Document ERTMS Operational Principles and Rules ERA_ERTMS_OPE_AppA_5 / V 5.0 on 09.04.2019
Death (killed person)	Safety / SSC-SA	Directive	Directive (EU) 2016/798 of the European Parliament and of the Council of 11 May 2016 on railway safety (recast)
DeBo	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
DeBo	Interoperability	Application Guide	Application_guide GUI/TSI/2023 Version 1.0 20/12/2023Guide for the application of the Technical Specifications for Interoperability (TSIs)
DeBo	Control-Command and Signalling	ERA Technical Document	Guideline - Certification: Restrictions and added functions V1.0 of 18.06.2024
DeBo	Vehicles / VA	Application Guide	Application Guide for the European register of authorised types of railway vehicles (ERATV) - v.5.7 on09.04.2025
DeBo	Infrastructure	Application Guide	Guide on the application of the common specifications of the register of Infrastructure - v. 3.1.0 on 31.03.2025
DeBo	Vehicles / VA	Application Guide	Guidelines for the practical arrangements for the vehicle authorisation process - v. 2.1 on 14/02/2024
DeBos issue	Control-Command and Signalling	ERA Technical Document	Guideline - Certification: Restrictions and added functions V1.0 of 18.06.2024
Deceleration data	ERTMS	Technical Document	ERTMS/ETCS - Glossary of Terms and Abbreviations - version : 4.0.0 - date 05/07/2023
Decision rule	International Standard	ISO	ISO/IEC 17025:2017(en) General requirements for the competence of testing and calibration laboratories
Decision-making	Freight	Glossary	Transport of dangerous goods. Risks Management Framework. Framework glossary v. 1.0/2018
Decision-making criteria	Freight	Glossary	Transport of dangerous goods. Risks Management Framework. Framework glossary v. 1.0/2018
Decision-making indicators	Freight	Glossary	Transport of dangerous goods. Risks Management Framework. Framework glossary v. 1.0/2018
Decision-making principle	Freight	Glossary	Transport of dangerous goods. Risks Management Framework. Framework glossary v. 1.0/2018
Declaration of conformity to an authorised vehicle type	Single Market Mutual Recognition Conformity Assessment	Regulation	Commission Implementing Regulation (EU) 2019/250 of 12 February 2019 on the templates for EC declarations and certificates for railway interoperability constituents and subsystems, on the model of declaration of conformity to an authorised railway vehicle type and on the EC verification procedures for subsystems in accordance with Directive (EU) 2016/797 of the European Parliament and of the Council and repealing Commission Regulation (EU) No 201/2011
Declarations	Control-Command and Signalling	ERA Technical Document	Guideline - Certification: Restrictions and added functions V1.0 of 18.06.2024

Common Safety Method
Conformity Assessment
Control-Command and Signalling
Data Protection
Energy
Entity in Charge of Maintenance
ERTMS
EU Policy
Freight
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
SMS Safety Culture Human and Organisational Factor
Telematics Applications for Passenger and Freight Services
Vehicles / VA
Withdrawn

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