British Standards Institution

Source:: ISO
Committee:: RAE/3 - Railway Applications - Rolling Stock Products
Categories:: Information management | Standardization. General rules
Comment period start date:: 11/02/2025
Comment period end date:: 05/04/2025

Comment by:

5th Apr

Scope

This document defines terms and definitions for coupler and buffer systems. This proposal is intended to introduce the terms related to coupler buffer system. No technical requirements will be included.

Purpose

This project aims to standardize the vocabulary used to describe coupler and buffer systems and related components in order to help contractors and/or stakeholders in the definition of products. It will not contain requirements for couplers and buffers. The terms and definitions reflect those used in numerous published International Standards. No technical requirements will be included, it will not overlap with the European project of Digital Automatic Coupler (DAC).

Coupler and buffer system are important parts connecting the vehicles and transferring longitudinal loads. To solve the following issues in the railway applications - coupler and buffer system, ISO standard related to terms and definitions is proposed.

Misunderstanding on the scope of concept related to coupler & buffer system and related components in different contexts.

Different meanings of same term in different regions or countries, leading to misunderstanding among suppliers, rolling stock builders, end users, and related stakeholders.

Collecting of existing items in several ISO and EN standards, for example EN 15551, EN 15020, EN 16019, etc. The structure of new proposal is compared with ISO 24478 Railway applications — Braking — General vocabulary, which collects terms and definitions used in numerous published International Standards.

The standard of the terms and definitions will benefit all the parties, reduce communication cost and time in the field of coupler and buffer system, and promote the technical exchange and integration, without affecting the technical development in case there was any for example the DAC in Europe.

Comment on proposal

Required form fields are indicated by an asterisk (*) character.

How important do you think standardization is in this area? *

Do you agree that a standard on this subject is feasible?: *

Please give reasons for your selections above: *

Would you or your organization use the standard? *

Would you or your organization be prepared to participate in the development of the standard or to comment on the draft when it is available? *

Are you aware of any regulation, existing standards and other good practice information in this area in the UK (e.g. Industry codes of practice; company specifications, international or European Standards)? *

Would the development of a standard(s) in this area have a particular impact/relevance to SME, consumer, environmental or societal interests? *

Are you aware of any other organizations to which this proposal may be relevant? If so please provide details below. *

Additional comments on the scope or proposal:

Although BSI will not usually enter into correspondence regarding individual comments or suggestions we may wish to contact you to seek further clarification. Please indicate whether this will be acceptable: *

Discard

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

Standard timeline

1. Proposal

Proposal start date:

11/02/2025

Proposal end date:

05/04/2025

2. Draft

3. Public Comments

4. Comment Resolution

5. Approval

6. Publication

Learn more about the standards development process

Standards Development

ISO/NP 25763-1 Railway applications — Coupler and buffer system — Part 1: Terms and definitions

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