Road vehicles -- Anchorages in vehicles and attachments to anchorages for child restraint systems

This document classifies the spatial requirements in a vehicle to enable a child restraint system (CRS) to be conveniently mounted. It also specifies the dimensions of child restraint systems, to ensure that they will fit in vehicles. A classification scheme is provided to determine dimensional compatibility between child restraint systems and the available space at specified seating positions in vehicles. The dimensional requirements refer to forward-facing child restraint systems of three size categories, rearward-facing child restraint systems of three size categories, and lateral-facing child restraint systems of two categories. This edition of the document also incorporates size classification of booster systems.

Véhicules routiers -- Ancrages dans les véhicules et attaches aux ancrages pour systèmes de retenue pour enfants

General Information

Status
Published
Publication Date
17-Oct-2018
Current Stage
6060 - International Standard published
Start Date
04-Sep-2018
Completion Date
18-Oct-2018
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INTERNATIONAL ISO
STANDARD 13216-3
Second edition
2018-10
Road vehicles — Anchorages
in vehicles and attachments to
anchorages for child restraint
systems —
Part 3:
Classification of child restraint system
and space in vehicle
Véhicules routiers — Ancrages dans les véhicules et attaches aux
ancrages pour systèmes de retenue pour enfants —
Partie 3: Classification des dimensions des retenues pour enfants et
espace dans le véhicule
Reference number
ISO 13216-3:2018(E)
ISO 2018
---------------------- Page: 1 ----------------------
ISO 13216-3:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
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Published in Switzerland
ii © ISO 2018 – All rights reserved
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ISO 13216-3:2018(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Vehicle space requirements ...................................................................................................................................................................... 2

4.1 Space required in a vehicle to accommodate specified types and installation

modes of child restraint systems............................................................................................................................................. 2

4.1.1 General...................................................................................................................................................................................... 2

4.1.2 Mass of CRF .......................................................................................................................................................................... 2

4.1.3 Installation and assessment using virtual tools and procedures .................. ......................... 3

4.2 Space required for full-height forward-facing toddler child restraint systems .............................. 3

4.3 Space required for reduced-height forward-facing toddler child restraint systems .................. 3

4.4 Space required for reduced-height forward-facing toddler child restraint systems

having a reduced contour in the upper part, and an extended seatback upper part ................. 3

4.5 Space required for full-size rearward-facing toddler child restraint systems ................................. 6

4.6 Space required for reduced-size rearward-facing toddler child restraint systems ..................... 7

4.7 Space required for rearward-facing infant child restraint systems .......................................................... 7

4.8 Space required for lateral-facing infant child restraint system (carry-cot) ....................................... 7

4.9 Space required for booster seat and booster cushion........................................................................................13

4.9.1 Purpose of the booster system envelopes for determination of space and

seat belt alignment in vehicles ..........................................................................................................................13

4.9.2 Installation requirements .....................................................................................................................................13

4.9.3 Belt routing requirements ....................................................................................................................................13

4.9.4 Installation with ISOFIX support ....................................................................................................................13

4.9.5 Installation without ISOFIX support ............................................................................................................14

5 Dimensions of child restraint system ..........................................................................................................................................18

5.1 Maximum dimensions of child restraint systems ..................................................................................................18

5.2 Full-height forward-facing toddler child restraint system .............................................................................18

5.3 Reduced-height forward-facing toddler child restraint system ................................................................18

5.4 Reduced-height forward-facing toddler child restraint systems with a reduced

contour in the upper part, and an extended seatback upper part ...........................................................19

5.5 Full-size rearward-facing toddler child restraint system................................................................................19

5.6 Reduced-size rearward-facing toddler child restraint system ...................................................................19

5.7 Rearward-facing infant child restraint systems ......................................................................................................19

5.8 Lateral-facing infant child restraint systems .............................................................................................................19

5.9 Booster seat and booster cushion restraint systems ..........................................................................................19

5.9.1 Purpose of the booster system envelopes with regard to child restraint

systems ..................................................................................................................................................................................19

5.9.2 Maximum dimensional requirements ........................................................................................................19

5.9.3 Booster with ISOFIX additional requirements ....................................................................................20

5.10 Procedure for checking CRS compliance with CRF ...............................................................................................20

5.11 Installation and assessment using virtual tools and procedures .............................................................20

6 Classification system .....................................................................................................................................................................................20

Annex A (informative) Marking of vehicle seating positions and child restraint systems ........................22

Annex B (informative) Drawings and tools .................................................................................................................................................24

Bibliography .............................................................................................................................................................................................................................25

© ISO 2018 – All rights reserved iii
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ISO 13216-3:2018(E)
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).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/patents).

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

constitute an endorsement.

For an explanation on 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 the following

URL: www .iso .org/iso/foreword .html.

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

This second edition cancels and replaces the first edition (ISO 13216-3:2006), which has been

technically revised.
The main changes compared to the previous edition are as follows:
— Addition of booster system envelopes ISO/B3, ISO/B2 and ISO/B1;

— Addition of envelope ISO/R2X (modified version of ISO/R2 to provide improved compatibility with

the vehicle interior);
— Improved version of the lateral facing envelope (ISO/L1 and ISO/L2);
— Dashed line in seatback area of the ISO/R series of envelopes;
— Corrections in the following envelope drawings: Figures 3, 5 and 7; and
— Addition of recommended CRF masses (Table 1).
A list of all parts in the ISO 13216 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.
iv © ISO 2018 – All rights reserved
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ISO 13216-3:2018(E)
Introduction

The basic ISOFIX standard ISO 13216-1 provides requirements needed for positioning of the seat bight

anchorages, the geometry around anchorage points and, to some extent, dimensional requirements for

forward-facing child restraint systems.

In order to ensure that a child restraint system fits in a vehicle, it is also essential that the vehicle interior

and the child restraint system match each other spatially. This document provides requirements for the

space needed in vehicles to accommodate child restraints of different types and sizes.

Not all vehicles on the market are capable of accommodating the largest child restraint systems.

This document thus provides a classification system to help in judging which types and sizes of child

restraint systems will fit in the vehicle. Three size classes of forward-facing systems and three size

classes of rearward-facing systems are provided. Two classes of lateral-facing systems are included

(dimensionally revised in this second edition). This second edition also incorporates booster system

envelopes for size classification of booster systems.

A suggested marking of the space available for the respective child restraint positions in the vehicle,

and for the child restraint system dimensions, is included in this document to help consumers choose

a child restraint system that is dimensionally suitable for their vehicle. This information is shown in

informative Annex A.
© ISO 2018 – All rights reserved v
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INTERNATIONAL STANDARD ISO 13216-3:2018(E)
Road vehicles — Anchorages in vehicles and attachments
to anchorages for child restraint systems —
Part 3:
Classification of child restraint system and space in vehicle
1 Scope

This document classifies the spatial requirements in a vehicle to enable a child restraint system (CRS)

to be conveniently mounted. It also specifies the dimensions of child restraint systems, to ensure that

they will fit in vehicles.

A classification scheme is provided to determine dimensional compatibility between child restraint

systems and the available space at specified seating positions in vehicles. The dimensional requirements

refer to forward-facing child restraint systems of three size categories, rearward-facing child restraint

systems of three size categories, and lateral-facing child restraint systems of two categories. This

edition of the document also incorporates size classification of booster systems.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 13216-1:1999, Road vehicles — Anchorages in vehicles and attachments to anchorages for child

restraint systems — Part 1: Seat bight anchorages and attachments
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 13216-1 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http: //www .electropedia .org/
— ISO Online browsing platform: available at https: //www .iso .org/obp
3.1
child restraint envelope

envelope simulating the dimensions of a child restraint system of a specified class, used in this document

to evaluate the space available for child restraint systems in a vehicle at a specified seating position

Note 1 to entry: The child restraint envelope is also used to identify the dimensional class for a given child

restraint system.
3.2
child restraint fixture
CRF
physical implementation of the envelope dimensions
3.3
booster system envelope
envelope describing a booster seat or a booster cushion
© ISO 2018 – All rights reserved 1
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ISO 13216-3:2018(E)
3.4
interference

significant contact with the vehicle interior that impedes the installation of the fixture

4 Vehicle space requirements

4.1 Space required in a vehicle to accommodate specified types and installation modes

of child restraint systems
4.1.1 General

Determination of space available in vehicle for child restraint systems is done by use of child restraint

envelopes in CAD or physical fixtures (CRF).

It shall be possible to accommodate the child restraint envelopes/fixtures, specified in this document at

a specified seating position in a vehicle, without interference with the vehicle interior elements, such as

head restraints, dashboard, windshield, or the vehicle seat in front of the seating position.

When checking the child restraint envelope/fixture on a seat, the vehicle seat shall be adjusted

longitudinally to its rearmost position and its lowest position.

In addition, when checking the child restraint envelope/fixture in a rear seating position, the related

vehicle front seat shall be adjusted as follows:

— longitudinally, to the mid-position between the rearmost position and the foremost position;

— vertically, to the mid position of its height adjustment, if not otherwise recommended by the vehicle

manufacturer; and

— the seat backrest may be adjusted, but not to a more upright angle than corresponding to a torso

angle of 15°.
NOTE 1 The angle can be measured according to ISO 6549.

The requirements apply for the child restraint envelope/fixture when positioned in the anchorages. It

is not required that the child restraint fixture shall move in and out of the seat under these conditions.

Adjustable attachments (adjustable longitudinally between −10 mm and +70 mm) may be used to

facilitate the interference checking. Envelope illustrations are showing the most extended position.

When installed on a vehicle seat, the child restraint envelopes in 4.2 to 4.9 should have a pitch angle

of 15° ± 10°, which corresponds to a clockwise rotation of the side view (upper-right drawing) in

Figures 1 to 11.

NOTE 2 The ISO/F, ISO/R and ISO/B envelope series are fully modular in size, except for the "X" versions. This

means that a vehicle compatible with the larger envelope is also compatible with the smaller one(s) of the same

category. For example, a vehicle seating position accommodating ISO/R3 also accommodates ISO/R2 and ISO/R1.

4.1.2 Mass of CRF

Child restraint fixtures for practical testing should have a mass according to Table 1 to obtain a realistic

compression of the vehicle seat.
2 © ISO 2018 – All rights reserved
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ISO 13216-3:2018(E)
Table 1 — CRF masses
Envelope / CRF Mass (kg) Tolerance (kg)
R1 10 ±1,0
R2 / R2X 10 ±1,0
R3 13 ±1,0
L1 / L2 13 ±1,0
F2 / F2X 13 ±1,0
F3 13 ±1,0
B1 3 ±1,0
B2 7 ±1,0
B3 7 ±1,0
ISOFIX base mass taken into account.
4.1.3 Installation and assessment using virtual tools and procedures

When using virtual tools for the assessment of the envelopes in a vehicle interior, the assessments shall

be representative of installing a physical fixture in a vehicle seating position, e.g. with regard to CRF

mass, centre of gravity, vehicle seat compression and extent of interference.

4.2 Space required for full-height forward-facing toddler child restraint systems

The vehicle seating position accommodates a full-height forward-facing toddler CRS. The child restraint

envelope according to Figure 1 can be positioned without interference with the vehicle interior when

installed as in 4.1.

4.3 Space required for reduced-height forward-facing toddler child restraint systems

The vehicle seating position accommodates a reduced-height forward-facing toddler CRS. The child

restraint envelope according to Figure 2 can be positioned without interference with the vehicle

interior when installed as in 4.1.

4.4 Space required for reduced-height forward-facing toddler child restraint systems

having a reduced contour in the upper part, and an extended seatback upper part

The vehicle seating position accommodates a reduced-height forward-facing toddler CRS having a

reduced contour in the upper part (to allow fitting in low-roof cars), and an extended upper part of the

seatback. The child restraint envelope according to Figure 3 can be positioned without interference

with the vehicle interior when installed as in 4.1.
© ISO 2018 – All rights reserved 3
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ISO 13216-3:2018(E)
Dimensions in millimetres
Key
1 limits in the forward and upward directions
2 dashed line marks the area where a support leg, or similar, may protrude
3 shape of CRF for positioning purpose in ISO 13216-1 (for reference)

4 further specifications of the connector area, see detail Y and ISO 13216-1:1999, Figures 2 and 3

Figure 1 — Envelope dimensions for a full-height forward-facing CRS — ISO/F3
4 © ISO 2018 – All rights reserved
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ISO 13216-3:2018(E)
Dimensions in millimetres
Key
1 limits in the forward and upward directions
2 dashed line marks the area where a support leg, or similar, may protrude
3 shape of CRF for positioning purpose in ISO 13216-1 (for reference)

4 further specifications of the connector area, see detail Y and ISO 13216-1:1999, Figures 2 and 3

Figure 2 — Envelope dimensions for a reduced-height forward-facing CRS, height 650 mm —

ISO/F2
© ISO 2018 – All rights reserved 5
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ISO 13216-3:2018(E)
Dimensions in millimetres
Key
1 limits in the forward and upward directions
2 dashed line marks the area where a support leg, or similar, may protrude
3 shape of CRF for positioning purpose in ISO 13216-1 (for reference)

4 further specifications of the connector area, see detail Y and ISO 13216-1:1999, Figures 2 and 3

Figure 3 — Envelope dimensions for a reduced-height forward-facing CRS having a reduced

contour in the upper part, and an extended seatback upper part — ISO/F2X
4.5 Space required for full-size rearward-facing toddler child restraint systems
The vehicle seating position accommodates a
...

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