ISO 13232-6:2005/Amd 1:2012

INTERNATIONAL ISO
STANDARD 13232-6
Second edition
2005-12-15
AMENDMENT 1
2012-07-15
Motorcycles — Test and analysis
procedures for research evaluation of
rider crash protective devices fitted to
motorcycles —
Part 6:
Full-scale impact-test procedures
Amendment 1: MATD test helmet
Motocycles — Méthodes d’essai et d’analyse de l’évaluation par la
recherche des dispositifs, montés sur les motocycles, visant à la
protection des motocyclistes contre les collisions —
Partie 6: Méthodes d’essai de choc en vraie grandeur
Amendement 1: Casque d’essai MATD
Reference number
ISO 13232-6:2005/Amd.1:2012(E)
©
ISO 2012

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ISO 13232-6:2005/Amd.1:2012(E)
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ISO 13232-6:2005/Amd.1:2012(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
Amendment 1 to ISO 13232-6:2005 was prepared by Technical Committee ISO/TC 22, Road vehicles,
Subcommittee SC 22, Motorcycles.
© ISO 2012 – All rights reserved iii

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ISO 13232-6:2005/Amd.1:2012(E)
Motorcycles — Test and analysis procedures for research
evaluation of rider crash protective devices fitted to
motorcycles —
Part 6:
Full-scale impact-test procedures
Amendment 1: MATD test helmet
Global changes
Add consequential amendments to this and other parts of ISO 13232, as needed.
Page 5, 4.3.7
Replace subclause 4.3.7 with the following text:
4.3.7 Helmet

The dummy shall be fitted with a MATD helmet specified in ISO 13232-3, according to the procedures
described in Annex D.
The MATD helmet shall be new (i.e., the MATD helmet shall not be used for more than one test).
Helmets of the same size and from the same production lot should be used for all tests within a paired
2)
comparison .
In footnote 2), replace “Bieffe” with “the manufacturer”.
Page 27, D.2
In the second paragraph, replace the first sentence with the following:
“If helmets other than the specified Bieffe are used, the alignment tool may require modification for use with
some helmets.”
Page 37, F.2.2.6
Replace subclause F.2.2.6 with the following text and renumber subsequent figures and tables in Annex F:
F.2.2.6 Helmet (see 4.3.7)
A full face motorcycle helmet is used for two reasons. Firstly, this style of helmet represents approximately
85 % of those manufactured worldwide. Secondly, the provision of protective coverage to the mouth and chin
region of the modified Hybrid III head form described in ISO 13232-3 eliminates concern that this part of the
head form is not particularly biofidelic. The distributed loading to the dummy face that is induced by the helmet
minimizes inappropriate contact phenomena.
In the 1996 and 2005 editions of ISO 13232, a Bieffe B12R helmet was specified as the test helmet. During the
1990s, the Bieffe model B12R helmet was a widely available full face motorcycle helmet and was specified as
the test helmet for all ISO 13232 procedures. The Bieffe B12R shell was injection moulded with polycarbonate.
3 3
The helmet liner was produced from expanded polystyrene bead foam with a density of 52 kg/m to 56 kg/m .
© ISO 2012 – All rights reserved 1

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ISO 13232-6:2005/Amd.1:2012(E)
The Bieffe B12R was produced by Bieffe Helmets S.r.l., Lucca, Italy; however, in 2004 this company ceased to
exist and all assets were transferred to Tecnoplast S.r.l., Italy. Production of the Bieffe B12R was discontinued
at all facilities except at a subsidiary of Tecnoplast known as Starplast Indústria E Comércio Limitada, located
in Brazil. This factory continued to produce the same helmet and sold them to motorcycle helmet distributors
in Brazil. The helmet manufactured in Brazil was no longer tested nor certified to ECE Regulation 22-05;
however, the design specifications for this helmet had not changed significantly since the original B12R helmet
was developed.
At the time of the drafting of this standard, ECE Regulation 22-05 was the most widely applied international
regulation for motorcycle helmets. However, as seen in Table F.1, the application of a typical international
motorcycle standard (e.g., ECE 22-05, Snell, DOT, etc.) as a specification would be inadequate due to the wide
range in performance of different helmet models that meet the same standard. A performance specification
should be based on the performance characteristics of the Bieffe B12R helmet in order to allow for comparisons
to tests that have been previously conducted using the B12R helmet and to allow continuity in the application of
ISO 13232. At the present time, test data presented in ISO 13232-3, that for a given impact velocity at a given
impact site, the variation in response of the MATD helmet is approximately ± 15 g. This is due to differences is
helmet liner mass and small differences in helmet placement during the test procedure. As of 2007, the price
of the Technoplast equivalent of the Bieffe B12R helmet is approximately 320USD. If the performance range
were to be reduced from ± 15 g, it is expected that the associated helmet cost would increase exponentially
as shown in Figure 1. Similarly, if the desired ISO 13232 performance range were increased (i.e. ± 20 g), the
associated helmet cost would decrease because it would be possible to find other less expensive helmets that
would also meet this performance specification (see Figure F.1).
However, a secondary problem that would occur as a result of increasing the performance range is the probability
of making a Type II error. This is a situation where the researcher makes the assumption that the helmet that he
is using is not statistically significantly d
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