Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

ISO draws attention to the possibility that the implementation of this document may involve the use of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s) which may be required to implement this document. However, implementers are cautioned that this may not represent the latest information, which may be obtained from the patent database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.

Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISO's adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 36, Safety and impact testing.

This second edition cancels and replaces the first edition ( ISO 29061-1:2010 ), which has been technically revised.

The main changes compared to the previous edition are as follows:

reviewed terminology to cover technology and regulation updates since the first edition;
editorial review.

A list of all parts in the ISO 29061 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.

Introduction

The usability of a child restraint system (CRS) in terms of ease of:

installation of CRSs in various vehicles; and
day-to-day use with a child (e.g. securing, harnessing, adaption for a growing child)

is of utmost importance to ensure that a CRS is used properly in accordance with the manufacturer's intentions, and to ensure that a correctly installed CRS will provide the best possible protection in a crash situation. An international agreement on usability criteria and measurements is beneficial for both consumers and manufacturers.

The aim of this document is to provide a usability evaluation system for ISOFIX systems to promote improved ISOFIX design for easy and correct use.

It provides child restraint and vehicle manufacturers with a tool for the assessment of the usability of new and current ISOFIX systems. At the same time, it provides consumers (parents and caregivers) with usability information on the key features related to the proper use of the ISOFIX system and assists them in selecting CRSs and vehicles with ISOFIX systems that are easier to use properly.

The ISO usability evaluation system has been developed with participation from, and considering the experiences from, usability rating systems of Canada (Transport Canada and ICBC), USA (NHTSA, IIHS) and the European Union (EU) (NPACS and consumer rating programmes, such as ICRT, ADAC).

1 Scope

This document provides criteria for judgement of usability of child restraint systems (CRSs) with ISOFIX attachments and their corresponding anchorage systems in vehicles.

This document provides criteria for a separate evaluation of the CRS ISOFIX attachments, of the ISOFIX anchorage installation in vehicles, and an evaluation of the interface issues when installing a CRS in a certain vehicle.

This document covers both rigid and flexible attachments of the CRS to the vehicle ISOFIX anchorages.

NOTE 1 CRS includes enhanced child restraint system (ECRS) according to UN Regulation No. 129.

NOTE 2 Although ISOFIX is defined in the original “ISOFIX” standard ( ISO 13216-1 ) to be a rigid system, the term “ISOFIX” in this document is extended to include flexible CRS attachments (e.g. LATCH in USA, UAS in Canada).

2 Normative references

3 Terms and definitions

4 ISOFIX usability evaluation procedure and scoring principles

4.1 Evaluation procedure

4.2 Scoring system

5 Usability evaluation forms

Bibliography