British Standards Institution

Source:: CEN
Committee:: RAE/3/-/7 - Railway applications - Couplers
Categories:: Railway engineering. Materials and components | Railway rolling stock. General
Comment period start date:: 27/03/2025
Comment period end date:: 20/05/2025
Number of comments:: 0

Comment by:

20th May

Scope

This document specifies the requirements for the digital automatic coupler (DAC) for freight compliant with the Technical Specification relating to the subsystem ‘rolling stock — freight wagons’ of the rail system in the European Union Commission Regulation (EU) No 321/2013 of 13 March 2013 and repealing Decision 2006/861/EC and EU regulation 2019/776.

This document specifies the minimum interface requirements to allow automatic coupling (mechanical and pneumatic) of two digital automatic couplers. This document further specifies the mechanical interfaces needed for the interoperability of electrical couplers, it does not cover the electrical contacts needed.

This document covers the requirements for DACs integrated into locomotives.

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Please email further comments to: debbie.stead@bsigroup.com

Standard timeline

1. Proposal (Complete)

Proposal start date:

2. Draft (Complete)

Draft start date:

24/01/2025

3. Public Comments

Public Comments start date:

27/03/2025

Public Comments end date:

20/05/2025

4. Comment Resolution

Comment Resolution start date:

11/08/2026

5. Approval

6. Publication

Publication start date:

03/11/2026

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Standards Development

BS EN 18171 EN 18171 Railway applications. Railway Rolling stock. Digital Freight Automatic Coupler. Performance requirements specific interface geometry and test method

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