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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)

Starting with "T" (619)

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

TOE

EU Policy

Glossary

Glossary for transport statistics - 6TH EDITION 2026

Toilet emissions

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)

Toilets

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)

Tolerable risk

Freight

Glossary

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

Toll

EU Policy

Glossary

The Social Costs of Transport - February 1997

Tonal sound

International Standard

ISO

ISO 3381:2021(en) Railway applications — Acoustics — Noise measurement inside railbound vehicles

Tonal sound

International Standard

ISO

ISO 3095:2013(en) Acoustics — Railway applications — Measurement of noise emitted by railbound vehicles

Tonne

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

Tonne-kilometre (tkm)

EU Policy

Glossary

Eurostat Transport Glossary on web release November 2024

Tonne-kilometre (tkm) carried by rail

EU Policy

Glossary

Glossary for transport statistics - 6TH EDITION 2026

Latest release

Tonne-kilometre offered by a wagon or a train

EU Policy

Glossary

Glossary for transport statistics - 6TH EDITION 2026

Latest release

Tonne-km

EU Policy

Regulation

Regulation (EU) 2018/643 of the European Parliament and of the Council of 18 April 2018 on rail transport statistics

TOP

International Standard

EU Technical Document

CEN CENELEC ABBRAVIATION ACRONYM 2025

Top management

SMS Safety Culture Human and Organisational Factor

ISO

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

Latest release

Top management

SMS Safety Culture Human and Organisational Factor

ISO

ISO 45001:2018(en) Occupational health and safety management systems — Requirements with guidance for use

Latest release

Top management

SMS Safety Culture Human and Organisational Factor

ISO

ISO 55001:2024(en) Asset management — Asset management system — Requirements

Latest release

Top management

SMS Safety Culture Human and Organisational Factor

ISO

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

Latest release

Top management

Common Safety Method

Application Guide

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

Top ups

EU Policy

Glossary

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

Top-level domain name registry or TLD name registry

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)