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helmet, test, approval, visor, accessory, paragraph, impact, type, headform, plane, annex, regulation, accessories, shell, helmets, system, tests, number, production, protective, figure, samples, surface, visors, force, lower, fitted, requirements, light, position, angle, universal, point, sample, vertical, means, part, anvil, face, batch, size, diameter, measured, manufacturer, area, specific, retention, strap, tested, apparatus

E/ECE/324
) Rev.1/Add.21/Rev.5/Amend.2
E/ECE/TRANS/505 )
February 9, 2023
STATUS OF UNITED NATIONS REGULATION
ECE 22-06
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
PROTECTIVE HELMETS, OF THEIR VISORS AND OF THEIR ACCESSORIES FOR
DRIVERS AND PASSENGERS OF MOTORCYCLES AND MOPEDS
Incorporating:
04 series of amendments
Date of Entry into Force: 20.03.95
Corr. 1 to the 04 series of amendments
Dated: 13.03.95
Supplement 1 to the 04 series of amendments
Date of Entry into Force: 18.01.98
Corr. 2 to the 04 series of amendments
Dated: 05.11.97
Supplement 2 to the 04 series of amendments
Date of Entry into Force: 13.01.00
05 series of amendments
Date of Entry into Force: 30.06.00
Corr. 1 to the 05 series of amendments
Dated: 08.03.00
Corr. 2 to the 05 series of amendments
Dated: 08.11.00
Corr. 3 to the 05 series of amendments
Dated: 27.06.01
Supplement 1 to the 05 series of amendments
Date of Entry into Force: 20.02.02
Supplement 2 to the 05 series of amendments
Date of Entry into Force: 26.07.12
Supplement 3 to the 05 series of amendments
Date of Entry into Force: 29.12.18
06 series of amendments
Date of Entry into Force: 03.01.21
Supplement 1 to the 06 series of amendments
Date of Entry into Force: 22.06.22
Supplement 2 to the 06 series of amendments
Date of Entry into Force: 04.01.23

---

UN REGULATION No. 22
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF PROTECTIVE
HELMETS, OF THEIR VISORS AND OF THEIR ACCESSORIES FOR DRIVERS AND PASSENGERS
OF MOTORCYCLES AND MOPEDS
REGULATION
1. Scope
2. Definitions
3. Application for approval
4. Markings
5. Approval
6. General specifications
7. Tests
8. Test reports
9. Product qualification
10. Conformity of production and routine tests
CONTENTS
11. Modification and extension of approval of a helmet or a visor type
12. Penalties for non-conformity of production
13. Production definitely discontinued
14. Information for wearers
15. Transitional provisions
16. Names and addresses of the Technical Services responsible for conducting approval tests and of
the Type Approval Authorities
ANNEXES
1A
1B
Communication concerning approval or extension or refusal or withdrawal of approval or
production definitively discontinued of a type of protective helmet without/with one/more
visor type(s), without/with one/more specific accessories type(s) pursuant to UN Regulation
No. 22
Communication concerning approval or extension or refusal or withdrawal of approval or
production definitively discontinued of a type of helmet visor type pursuant to UN Regulation
No. 22

---

UN REGULATION No. 22
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF PROTECTIVE HELMETS, OF THEIR
VISORS AND OF THEIR ACCESSORIES FOR DRIVERS AND PASSENGERS OF
MOTORCYCLES AND MOPEDS
1. This Regulation applies to protective helmets for drivers and passengers of mopeds and
of motorcycles with or without side-car , to the visors fitted to such helmets or intended
to be added to them and to the accessories to be fitted to such helmets or intended to be
added to them.
2. DEFINITIONS
The accessories assessment is related only to the passive safety performances and to
the compatibility to be fitted to a helmet ready for accessories.
For the purposes of this Regulation,
2.1. "Protective helmet" means a helmet primarily intended to protect the wearer's head
against impact. Some helmets may provide additional protection;
2.2. "Shell" means the hard part of the protective helmet, which gives it its general shape;
2.3. "Protective padding" means a material used to absorb impact energy;
2.4. "Comfort padding" means a material provided for the wearer's comfort;
2.5. "Retention system" means the complete assembly by means of which the helmet is
maintained in position on the head, including any devices for adjustment of the system or
to enhance the wearer's comfort;
2.5.1. "Chin-strap" means a part of the retention system consisting of a strap that passes
under the wearer's jaws to keep the helmet in position;
2.5.2. "Chin-cup" means an accessory of the chin-strap that fits round the point of the
wearer's chin;
2.6. "Peak" means an extension of the shell above the eyes;
2.7. "Lower face cover (chin guard)" means a detachable, movable or integral
(permanently fixed) part of the helmet covering the lower part of the face;
2.7.1. "Protective lower face cover" means a detachable, movable or integral (permanently
fixed) part of the helmet covering the lower part of the face and intended to protect the
chin of the user against impacts;

---

2.16. "Reference plane" means a construction plane parallel to the basic plane of the
headform at a distance from it which is a function of the size of the headform;
2.17. "Protective helmet type" a category of protective helmets displaying differences from
one another, with special regard to:
2.17.1. "Manufacturer" It is possible to have different trade marks, provided that a trade mark
stated in the approval certificate is also present in an easily accessible position.
2.17.2. Shell or protective padding materials. However, a protective helmet type may include a
range of sizes, provided that the thickness and density of the protective padding of each
size in the range is at least equal to that of the protective helmet that has passed the
tests.
A type of helmet may include different shell sizes (provided that the shell design must
stay the same) and different retaining systems provided that they all meet the
requirements of this Regulation.
2.18. "Visor type" means a category of visors which do not differ substantially in such
essential characteristics as:
2.18.1. "Manufacturer" However, it is possible to have different trade marks, provided that a
trade mark stated in the approval certificate is also present in an easily accessible
position.
2.18.2. The materials, dimensions, manufacturing processes (such as extrusion of moulding)
colour, surface treatment, system of attachment to the helmet.
2.19. "Approval test" means a test to determine the extent to which a protective helmet type
and/or a visor type submitted for approval is capable of satisfying the requirements.
2.20. "Production quality test" means a test to determine whether the manufacturer is able
to produce helmets and/or visors in conformity with the helmets and/or visors submitted
for type approval.
2.21. "Routine testing" means the testing of a number of helmets and/or visors selected from
a single batch to verify the extent to which they satisfy the requirements.
2.22. "Accessory" means any object intended to integrate the secondary functionalities of the
helmet (e.g. electronic devices and their support).
2.22.1. "Universal accessory" means an accessory designed to be fitted to any helmet that is
Universal accessory ready.
2.22.2. "Specific accessory" means an accessory designed to be fitted to a specific helmet
model.
2.23. "Accessory type" a category of accessory not showing differences with special regard
to:
2.23.1. "Manufacturer" It is possible to have different trademark, provided that a trade mark
stated in the approval certificate is also present in an easily accessible position.

---

3.1.1.4. If the helmet is fitted with one or more specific accessories:
3.1.1.4.1. Drawings in scale with sufficient detail to permit identification of the Specific accessory
type and size and of its means of attachment to the helmet and every component such
as kind of microphone or speakers.
3.1.1.4.1.1. A technical description of the Specific accessory stating its weight, dimensions, materials
used and, where appropriate, the surface treatment.
3.1.1.4.2. If the helmet can be fitted with Universal accessories:
3.1.1.4.2.1. Drawings in scale with sufficient detail to permit identification of the area/s where can be
fitted and the attachment means together with the specification of speakers space, if any,
and microphone space, if any.
3.1.1.5. A number of helmets, with or without visors and with or without inner visors, of different
sizes, sufficient to enable all the tests specified in Paragraph 7.1. to be conducted and
one helmet additionally to be retained by the technical service responsible for conducting
the approval test. In the case of specific or universal accessories additional helmets will
be supplied to the Technical Service to allow the necessary checks and tests specified in
Chapters 6 and 7.
3.1.1.6. For each visor type, if any, 7 (+3 if optional test for mist retardant visor is carried out)
visors taken from a sample of not less than 14 (+6 if optional test) specimens. 6 (+3 if
optional test) visors shall be subjected to the tests and the seventh (or tenth if optional
test) shall be retained by the technical service responsible for conducting the approval
test, if the visor can be fitted with an inner visor, enough inner visors to perform all the
required tests.
3.2. Application for Approval of a Visor Type
3.2.1. The application for approval of a visor type shall be submitted by the visor manufacturer
or by the holder of the manufacturer's name or trade mark or by his duly accredited
representative, and for each type the application shall be accompanied by the following:
3.2.1.1. Drawings in scale with sufficient detail to permit identification of the visor type and of its
means of attachment to the helmet. The drawings shall show the position intended for
the approval mark as set out in Paragraph 5.2.4.1.,
3.2.1.2. A technical description of the visor stating materials used, the manufacturing processes
and, where appropriate, the surface treatment, if the visor can be fitted with an inner
visor, drawings of the inner visor and its means of attachment.
3.2.1.3. List of approved helmet types to which the visor may be fitted,
3.2.1.4. For each visor type, if any, 7 (+3 if optional test for mist retardant visor is carried out)
visors taken from a sample of not less than 14 (+6 if optional test) specimens and the
helmets to which the visors are intended to be fitted.
6 (+3 if optional test) visors shall be subjected to the tests and the seventh (or tenth if
optional test) shall be retained by the technical service responsible for conducting the
approval test.
If the visor can be fitted with an inner visor, enough inner visors to perform all the
required tests.

---

4. MARKINGS
4.1. The protective helmets submitted for approval in conformity with Paragraph 3.1. above
shall bear:
4.1.1. On the helmet, the applicant's trade name or mark, an indication of the size (in letter and
cm), the year of production and, if appropriate, an indication of the unsuitability of the
lower face cover to offer any protection against impacts to the chin.
4.1.2. On the visor, the applicant's trade name or mark and, if appropriate, an indication of the
unsuitability of the visor for use during the hours of darkness or in conditions of poor
visibility.
4.2. The visors submitted for approval in conformity with Paragraph 3.2. above shall bear the
applicant's trade name or mark and, if appropriate, an indication of the unsuitability of the
visor for use during the hours of darkness or in conditions of poor visibility.
4.3. The marking shall not be placed within the main visibility area.
4.4. The accessories submitted for approval in conformity with Paragraph 3.3. above shall
bear the applicant's trade name or mark.
4.5. The marking shall be clearly legible, resistant to wear and in a readily accessible place.
5. APPROVAL
5.1. Approval of a Protective Helmet Type, Without or With One or More Visor Types,
that May Include Inner Visors, and Without or With One or More Specific
Accessories
5.1.1. If the protective helmets and the visors, if any, with and without inner visors, if any, with
and without specific accessories, if any, submitted in pursuance of Paragraph 3.1.1.4.
above meet the requirements of this Regulation, approval shall be granted.
5.1.2. An approval number shall be assigned to each type approved. Its first two digits (at
present 06) shall indicate the series of amendments incorporating the most recent major
technical amendments made to the Regulation at the time of issue of the approval. The
same Contracting Party shall not assign the same number to another helmet type
covered by this Regulation.
5.1.3. Notice of approval or of extension or refusal or withdrawal of approval or production
definitely discontinued of a protective helmet type, without or with one or more visor
types pursuant to this Regulation shall be communicated to the Parties to the 1958
Agreement applying this Regulation, by means of a form conforming to the model in
Annex 1A to this Regulation.

---

5.1.4.1.2.3.2. For Specific accessory ready helmet, a slash and:
"SA" if the helmet has been tested with specific accessories
5.1.4.1.2.3.3. For specific accessory ready and universal accessory ready helmet, a slash and:
The symbol specified in Paragraph 5.1.4.1.2.3.2.
A dash and an additional or various of the symbols, if applicable, laid down in
Paragraph 5.1.4.1.2.3.1.
5.1.4.1.3. The marking and/or symbol denoting the unsuitability of the lower face cover, if
appropriate.
5.1.4.1.4. The marking on the helmet and, if appropriate, lower face cover shall be clearly legible
and resistant to wear.
5.1.4.1.5. The marking can also include, not in alternative, a bar or QR code for digital reading.
5.1.5. In addition to the marks described in Paragraph 4.1.2. above, the following particulars
shall be affixed visibly and in a readily accessible place to every visor, if any, conforming
to a type approved with a helmet under this Regulation:
5.1.5.1. An international approval mark consisting of:
5.1.5.1.1. A circle surrounding the Letter 'E' followed by the distinguishing number of the country
which has granted approval.
5.1.5.1.2. The approval number followed by:
5.1.5.1.2.1. A dash followed by a production serial number. The production serial numbers shall be
continuous for all protective helmets of the same type approved, and each authority shall
keep a register from which it can verify that the type and production serial numbers
correspond.
5.1.5.1.3. The symbol denoting daytime use only, if appropriate.
5.1.6. The marking on the visor shall be clearly legible and resistant to wear.
Note: A ultradistructive label can also be an acceptable marking on the visors.
5.1.7. The marking on the visor shall not be placed within the main visibility area.
5.1.8. The approval marks prescribed in Paragraphs 5.1.4., 5.1.5. and 5.2.4. above may not be
replaced by a Unique Identifier (UI) as referred to in Schedule 5 of the 1958 Agreement.
5.1.9. Annex 2A to this Regulation gives examples of the arrangements of the approval marks
for protective helmets and visors.
5.1.10. In order to be considered as approved under this Regulation, subject to the provisions of
Paragraph 9 below, every protective helmet shall bear, sewn to its retention system, one
of the labels referred to in Paragraph 5.1.4. above. A different method of securing the
label is authorised if it complies with the above provisions.

---

5.3. Approval of a Sun Shield
5.3.1. Where the sun shield meets the requirements of this Regulation, it shall be marked. The
marking shall be reported on the Approval Certificate of the helmet where it is installed.
5.4. Approval of an Accessory
5.4.1. Where the accessories submitted in accordance with Paragraph 3.3. above meet the
requirements of this Regulation, approval shall be granted.
5.4.2. An approval number shall be assigned to each type approved. Its first two digits (at
present 06) shall indicate the series of amendments incorporating the most recent major
technical amendments made to the UN Regulation at the time of issue of the approval.
The same Contracting Party shall not assign the same number to another accessory
type covered by this Regulation.
5.4.3. Notice of approval or of extension or refusal or withdrawal of approval or production
definitely discontinued of an accessory type pursuant to this UN Regulation shall be
communicated to the Contracting Parties to the 1958 Agreement applying this
UN Regulation, by means of a form conforming to the model in Annex 1C to this
UN Regulation.
5.4.4. In addition to the marks prescribed in Paragraph 4.4. above, the following particulars
shall be affixed visibly and in a readily accessible place to every accessory conforming to
a type approved under this UN Regulation:
5.4.4.1. An international approval mark consisting of:
5.4.4.1.1. The approval symbol described in Paragraph 5.1.4.1.1.,
5.4.4.1.2. The approval number followed by:
5.4.4.1.2.1. A dash and the production batch number. The production batch numbers shall be
continuous for all accessories of the same type approved, and each authority shall keep
a register from which it can check that the type and production batches correspond.
5.4.4.1.2.2. Depending on universal or specific accessory:
5.4.4.1.2.2.1. For universal accessory, a dash and one or various symbols as applicable:
For components:
"S" or "S45": "S" if the universal accessory include speakers whose maximum diameter
is 40mm or "S45" if the universal accessory include speakers whose maximum diameter
is between 40 and 45mm;
"M" if the Universal accessory include microphone;
For locations:
"F" if the Universal accessory is to be installed or has a component to be installed in the
front side area of the helmet;

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6.3. No component, accessory or device may be fitted to or incorporated in the protective
helmet unless it is designed in such a way that it will not cause injury and that, when it is
fitted to or incorporated in the protective helmet, the helmet still complies with the
requirements of this Regulation.
Accessories shall be fitted in accordance with the helmet manufacturer's instructions
and, if it is the case, also in accordance with the accessory manufacturer's instructions.
Only approved helmets and approved accessories according to this Regulation can
guarantee the performance of the combination of them.
6.3.1. The helmets may be prepared for fitting universal accessories.
6.3.1.1. The helmet shall have markings on the exterior of the helmet shell or any visible
component as a reference for the installation of the universal accessories main external
components.
The area where the universal accessories are fitted shall be at least 30mm of distance
from any point of any impact affected area to the lower edge of the helmet shell (the
lower rubber rim is considered to be helmet shell for this purpose).
6.3.1.2. The installation of exterior accessories shall be done in such a way that no part of a
universal accessory, whose maximum main unit(s) dimensions are as defined in
Annex 20, shall be located in an impact affected area.
The helmet designed to be fitted with universal accessory shall have either appropriate
space for attaching the device or clamp fixation system as foreseen in Annex 20. The
space or clamp fixation shall be provided on both sides of the helmet for each declared
position symmetrically located with respect to the longitudinal vertical plane. At least one
position for accessories fixation has to be declared.
6.3.1.3. If the helmet fulfils the requirements of 6.3.1.1. and 6.3.1.2. it shall be marked as ready
for Universal Accessories "UA". The helmets marked as "UA" shall also fulfil additional
requirements and tests prescribed by this Regulation.
6.3.1.4. If the helmet is prepared for speakers, the helmet shall have a dedicated space of at
least 41mm diameter and a depth of at least 8mm. Optionally, the helmet may be
prepared for bigger speakers and, in this case, the related diameter shall be increased to
at least 46mm diameter. The helmet shall be prepared to accommodate the wires for the
speakers, if there is no special arrangement for the wires, the above-mentioned
diameters shall be increased by 2mm.
The helmet shall be tested to assess that the appropriate speaker simulators, as defined
in Annex 20, have no adverse effect and that in any case the helmet still complies with
all the requirements as set forth in Chapter 7.3.
In this case, the helmet shall be marked as "S" or "S45" depending on the assessment
done.
6.3.1.5. When the helmet is designed for fitting speakers, a minimum distance between the
speakers shall allow a headform of the appropriate size could pass through them. This
requirement has to be met for a speaker of 12mm thickness and the maximum declared
diameter.

---

6.4.3. The protective padding shall cover all the areas defined in Paragraph 6.4.1., account
being taken of the requirements of Paragraph 6.5.
6.5. The helmet shall not dangerously affect the wearer's ability to hear. The temperature in
the space between the head and the shell shall not rise inordinately; to prevent this,
ventilation holes may be provided in the shell.
Where means for attaching a visor are not provided, the profile at the front edge shall not
prevent the wearing of goggles.
6.6. All projections from or irregularities in the outer surface of the shell greater than 2mm
shall be tested for shear assessment according to Paragraphs 7.4.1. or 7.4.2. The outer
surface of the helmet shall be tested for friction assessment according to
Paragraphs 7.4.1. or 7.4.2. This applies in particular to a movable lower face cover in all
positions intended by the manufacturer.
6.7. All external projections shall be radiused and any external projections other than
press-fasteners shall be smooth and adequately faired.
6.7.1. All external projections not more than 2mm above the outer surface of the shell (e.g. rivet
heads) shall have a radius of a minimum of 1mm.
6.7.2. All external projections more than 2mm above the outer surface of the shell shall have a
radius of a minimum of 2mm.
The latter specific requirements shall not apply if a projection satisfies the requirements
in Paragraphs 7.4.1. or 7.4.2. below.
6.8. There shall be no inward-facing sharp edges on the inside of the helmet; rigid, projecting
internal parts shall be covered with padding so that any stresses transmitted to the head
are not highly concentrated.
6.9. The various components of the protective helmet shall be so assembled that they are not
liable to become easily detached as a result of an impact.
In the case of visor and movable or detachable lower face cover, only when in not
protective position, the detachment is acceptable provided that it is complete and not to
cause possible injuries to the user.
6.10. Retention systems shall be protected from abrasion.
6.11. The helmet shall be held in place on the wearer's head by means of a retention system
which is secured under the lower jaw. All parts of the retention system shall be
permanently attached to the system or to the helmet.
6.11.1. If the retention system includes a chin-strap, the strap shall be not less than 20mm wide
under a load of 150N ± 5N applied under the condition prescribed in Paragraph 7.6.2.
6.11.2. The chin strap shall not include a chin-cup.
6.11.3. Chin straps shall be fitted with a device to adjust and maintain tension in the strap.

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6.14. After the performance of one of the prescribed tests, the protective helmet shall not
exhibit any breakage or deformation dangerous to the wearer.
Note: As example visor sunshield and shell significant cracks or any part partially
detached (spoiler, lower face cover, accessories) that can hurt the user while he's
rolling on the road.
6.15. Peripheral Vision
6.15.1. To carry out the test, the technical service shall select from among the existing sizes of a
helmet type the size it considers likely to yield the least favourable result;
6.15.2. The helmet shall be placed on the headform corresponding to its size by the procedure
set out in Annex 5 to this Regulation;
6.15.3. In the above conditions there shall be no occultation in the field of vision bounded by
(see Annex 4, Figures 2A, 2B, 2C and 2D).
6.15.3.1. Horizontally: two segments of dihedral angles symmetrical in relation to the median
longitudinal vertical plane of the headform and situated between the reference and the
basic planes.
Each of these dihedral angles is defined by the median longitudinal vertical plane of the
headform and the vertical plane forming an angle of not less than 105° with the median
longitudinal vertical plane and whose edge is the straight line LK;
6.15.3.2. Upwards: a dihedral angle defined by the reference plane of the headform and a plane
forming an angle of not less than 7° with the reference plane and whose edge is the
straight line L L , the Points L and L representing the eyes;
6.15.3.3. Downwards: a dihedral angle defined by the basic plane of the headform and a plane
forming an angle of not less than 45° with the basic plane and whose edge is the straight
line K K .
6.16. Visors
However, this downward clearance makes specific allowance for breath deflectors.
The breath deflector allowance is shown in Annex 4 Figure 2D. It includes the region that
is within 31mm to the right and left of the longitudinal plane and that lies below the two
planes that form 45° angles with the longitudinal plane and that intersect it at the level of
the 6mm below the basic plane.
6.16.1. The systems of attachment of a visor to a helmet shall be such that the visor is
removable. It must be possible to manoeuvre the visor out of the field of vision with a
simple movement of one hand. However, the latter prescription may not be required for
helmets which do not provide chin protection provided that a label is attached to the
helmet to the effect of warning the purchaser that the visor cannot be manoeuvred.
6.16.2. Angle Opening (see Annex 9)

---

Figure 2
Symbol "Daytime Use Only"
Note: this symbol or indication must be visible and extend over at least 1cm
6.16.3.5. Visors shall be free from any significant defects likely to impair the vision, such as
bubbles, scratches, inclusions, dull spots, holes, mould marks, scratches or other defects
originating from the manufacturing process in the field of vision. The light diffusion shall
not exceed the limit in accordance with Paragraph 7.8.3.2.1.2. when measured in
accordance with one of the methods specified in Annex 11.
If different results arise when this is assessed, the requirements on scattered light shall
be measured and assessed over an area 5mm in diameter which includes the presumed
error.
6.16.3.6. Visors shall in addition be sufficiently transparent, shall not cause any noticeable
distortion of object as seen through the visor, shall be resistant to abrasion, resistant to
impact and shall not give rise to any confusion between the colour used in road traffic
sign and signals. The relative visual attenuation quotient (Q) shall not be less than:
0.80 for red signal light;
0.60 for yellow signal lights;
0.60 for green signal light;
0.60 for blue signal light.
The relative attenuation quotient shall be measured by the method given in
Paragraph 7.8.3.2.1.1., before the abrasion test.
Note: When calculating the value of Q from the spectral measurements, the value in
Annex 14 shall be used. Linear interpolation of these values for steps smaller than
10nm is permissible.
6.16.3.7. In the range 475nm to 650nm, the special transmittance, measured by the method given
in Paragraph 7.8.3.2.1.1., of the visor shall not be less than 0.2 � . The spectral
transmittance shall be measured before the abrasion test.

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6.17.2.4. Sun shield shall not cause any noticeable distortion of object as seen through the visor,
resistant to impact and shall not give rise to any confusion between the colour used in
road traffic sign and signals. The relative visual attenuation quotient (Q) shall not be less
than:
0.80 for red signal light;
0.60 for yellow signal lights;
0.60 for green signal light;
0.60 for blue signal light.
The relative attenuation quotient shall be measured by the method given in
Paragraph 7.8.3.2.1.1.
6.17.2.5. In the range 475nm to 650nm, the spectral transmittance, measured by the method
given in Paragraph 7.8.3.2.1.1., of the visor shall not be less than 0.2�
6.17.2.6. The table contains the permissible refractive powers at the sight points. The sight points
are located in the reference plane 32mm to the right and the left of the longitudinal
median plane (see Figure 2B).
Permissible Refractive Power Values for Sun Shields;
Measured Without a Combination with the Visor.
Spherical Effect Astigmatic Effect Prismatic Effect Difference
(D + D )/2
m
| D � D |
m
Base Out
cm/m
Horizontal
Base In
cm/m
Vertical
cm/m
� 0.12 0.12 1.00 0.25 0.25
D , D :
Refractive effect in two main sectors
The requirements for the prismatic effect apply to the difference between the values at
the two sight points.
The refractive powers shall be measured according to method specified in Annex 15.

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Each of these surfaces shall be situated as near as possible to the point of contact with
the shell of a vertical plane parallel to the longitudinal vertical plane of symmetry, to the
right and to the left, and as near as possible to the point of contact with the shell of a
vertical plane perpendicular to the longitudinal plane of symmetry, to the front and to the
rear.
6.18.3. Colorimetric Test
Each of the retro-reflective areas shall emit white light when it is illuminated with a
standard illuminant A, with an observation angle of 1/3° and an illumination angle
� = � = 0° (or � = ± 5°, � = 0°); in other words: the color value chart "x" and "y" of the
reflected light shall lie within the zone specified below:
White:
limit towards blue x � 0.310
limit towards yellow x � 0.500
limit towards green y � 0.150 + 0.640x
limit towards green y � 0.440
limit towards purple y � 0.050 + 0.750x
limit towards red y � 0.382
6.18.4. Photometric Test
The minimum value of the luminous intensity coefficient of a surface area of 18cm of
material when revolved shall not be less than the values specified in the table below,
expressed in millicandelas per lux.
Angle of Divergence
6.18.5. Resistance to External Agent
Angle of Illumination
0° 20° 40°
20' 100 60 25
After each conditioning as described in Paragraph 7.2., the helmet shall be visually
inspected. There shall be no signs of cracking or appreciable distortion of the
retro-reflective material.
6.18.6. Compatibility of Materials
Neither the adhesive nor the retro-reflective material shall affect the mechanical
performance of the helmet according to the related tests in the present Regulation.

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6.19.9. When the accessories to be fitted have any component, different from speakers,
microphone or clamping, to be installed on the interior of the helmet shell in an impact
affected area, the component shall fulfil the following requirements:
6.19.9.1. The material has to be flexible and of a maximum thickness of 2mm; or
6.19.9.2. Have the required thickness but be covered with padding and/or attached to a flexible
support and/or located in such a place in order not to generate any hard point in the
event of an impact.
6.19.10. Any accessory component laying in the field of vision shall be made of transparent
material or located in such a way to prevent interference with the field of vision.
6.19.11. If an accessory can be mounted in different locations in a helmet and for this needs
different supports, each of the supports shall bear an indelible mark with one of the
following symbols:
7. TESTS
"FR" For Front Right side fitting
"FL" For Front Left side fitting
"LR" For side Right fitting
"LL" For side Left fitting
"R" For rear fitting
The marking will be done in a visible surface when the support is attached to the helmet.
The markings will be of at least 8mm height.
7.1. Each helmet type, fitted with its visor if placed on the market with a visor, shall be
conditioned as shown below.

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7.2.3. Low-temperature Conditioning
The helmet shall be exposed to a temperature of -10°C ± 2°C for not less than 4h.
7.2.4. Ultraviolet-radiation Conditioning and Moisture Conditioning.
The outer surface of the protective helmet shall be exposed successively to:
7.2.4.1. Ultraviolet irradiation by a 150W xenon-filled quartz lamp for 48h at a range of 25cm;
7.2.4.2. Spraying for 4 to 8h with water at ambient temperature at the rate of 1l/min.
7.3. Linear Impact – Energy Absorption Tests
7.3.1. Description of Test
7.3.1.1. Principle
Impact absorption capacity is determined by recording against time the acceleration
imparted to a headform fitted with the helmet, when dropped in guided free fall at a
specific impact velocity upon a fixed steel anvil.
7.3.1.2. Marking of Points and Area of Impact
Before conditioning, the points and areas of impact are marked as indicated in
Paragraph 7.3.4.2. and Annex 4 (Figure 3) and the helmet is positioned in accordance to
Annex 5.
7.3.1.3. Positioning of the Helmet.
After Conditioning:
7.3.1.3.1. The helmet shall be positioned in accordance with the requirements of Annex 5 on a
headform of appropriate size selected from among those listed in Paragraph 7.3.3.1.
When testing impact Points B, X, P, R and extra points the helmet is tipped towards the
rear so that the front edge of the helmet in the median plane is displaced by 25mm; the
retention system is then adjusted under the chin of the headform; if the system includes
an adjustable chin strap, the strap is tightened as for normal use.
"Tightened as for normal use" means that the helmet must be tighten after having
applied below the chin a rigid cylinder 10mm diameter at least 30mm long that will be
removed before the test.

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7.3.2. Apparatus (see Annex 8, Figure 1)
7.3.2.1. Description
The test apparatus shall comprise:
(a)
(b)
(c)
(d)
(e)
An anvil rigidly fixed to a base;
A free fall guidance system;
A mobile system supporting the helmeted headform;
A metal headform fitted with a tridirectional accelerometer and a measuring
assembly;
A system by which the point of impact can be brought into correspondence with
the centre of the anvil.
7.3.2.2. Base
7.3.2.3. Anvils
The base shall be made of steel or concrete or a combination of these materials and
have a mass of at least 500kg.
It shall be so constructed that there is no significant deformation of the surface under the
test load.
No part of the base or anvil shall have a resonance frequency liable to affect the
measurements.
7.3.2.3.1. The flat steel anvil shall have a circular impact face of 130mm ± 3mm.
7.3.2.3.2. The kerbstone anvil shall have two sides forming an angle of 105 ± 5°, each of them with
a slope of 52.5 ± 2.5° towards the vertical and meeting along a striking edge with a
radius of 15mm ± 0.5mm. The height must be at least 50mm and the length not less than
125mm.
The orientation is 45° to the longitudinal vertical plane at Points B, P, R, and extra points,
45° to the base plane at Point X (front low, back up).
7.3.2.4. Mobile System and Guides
The mobile system supporting the headform shall be such that its characteristics do not
affect the measurement of acceleration at the centre of gravity of the headform. It shall
also be such that any point in the area ACDEF can be positioned vertically above the
centre of the anvil.
The guides shall be such that the impact velocity is not less than 95% of the theoretical
velocity.

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7.3.3.4. For tests other than those of impact-absorption, appropriate full headforms complying
only with the geometrical provisions of Paragraph 7.3.3.3. above, may be used.
Table 1
Correspondence Between Test Headforms and Helmet Sizes
Largest Size Specified (cm)
50 51 52 53 54 55 56 57 58 59 60 61 62
50 A A C
51 A C C
Smallest Size Specified (cm)
52
C
C
E
53
C
E
E
54
E
E
E
55
E
E
J
56
E
J
J
57
J
J
J
58
J
J
M
59
J
M
M
60
M
M
O
61
M
O
62
O
7.3.4. Selection of Points of Impact
7.3.4.1. Each test shall be carried out with 4 impacts on one helmet on the Points B, X, P and R,
in this sequence.
When a helmet with a protective lower face cover is being tested then an additional
Point S shall be impacted after the four other points, but only against the anvil specified
in Paragraph 7.3.2.3.1.
Other test samples can be used for additional linear impact on extra point.
7.3.4.1.1. After each impact the helmet shall be re-positioned correctly on the headform prior to the
next impact, without interfering with the adjustment of the retention system. Before each
impact on the Point S the helmet shall be re-positioned correctly on the headform and
the retention system adjusted under the chin of the headform; if the system includes an
adjustable chin strap, the strap is tightened as much as possible.

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RXR
– in the right (135°) rear-lateral area, situated in the vertical plane and at an
angle of 20° measured from Z above the AA' plane.
RXPL – in the left (225°) rear-lateral-superior area, situated in the vertical plane and at
an angle of 45° measured from Z above the AA' plane.
RXPR – in the right (135°) rear-lateral-superior area, situated in the vertical plane and
at an angle of 45° measured from Z above the AA' plane.
RP
– in the rear-superior area, situated in the vertical longitudinal plane of
symmetry of the helmet (180°) and at an angle of 45° measured from Z above
the AA' plane.
Impacts points should be within 10mm radius of the defined point.
7.3.5.
Combination of Conditioning and Anvils
Conditioning:
Anvils
Ambient
Flat and kerbstone
Heat
Kerbstone
Low temperature
Flat
Ultraviolet radiation and moisture
Flat or kerbstone (to be selected by the laboratory)

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7.4.1.1.2.3. The helmet shall be tested in any condition in which it may be placed on the market, that
is both with and without accessories if they are supplied as original equipment. Helmets
placed on the market with a visor shall be tested with the visor in the closed position.
7.4.1.1.3. Test
Helmets of the category "P/J" shall be tested in all the configurations provided by the
manufacturer.
The drop height shall be such that the unit constituted by the headform and helmet falls
on the test anvil at a velocity which, immediately before impact, is equal to 8.5
(-0.0/+0.15)m/s.
7.4.1.2. Apparatus (see Annex 8, Figure 1b)
7.4.1.2.1. Description
The test apparatus shall comprise:
(a)
(b)
(c)
(d)
(e)
(f)
(g)
An anvil rigidly fixed to a base;
A free fall guidance system;
A mobile system supporting the helmeted headform;
A headform conforming to that referred to in Paragraph 7.4.1.2.6., and
A system which may be adjusted such that the point of impact can be brought into
correspondence with the upper part of the face of the anvil.
A means of recording the continuously changing transmitted anvil force during the
impact.
A suitable energy-absorbing base and catch net to prevent damage to the helmet
after the impact.
7.4.1.2.2. Base
This shall conform to the requirements specified in Paragraph 7.3.2.2.

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7.4.1.3. Selection of Impact Points
7.4.1.4. Requirements
Any point on the helmet may be selected. The impact point should be selected with
regard to the anvil against which the helmet is to be tested, taking into account the
function of the anvils given in Paragraphs 7.4.1.2.3.1.1. and 7.4.1.2.3.1.2. The helmet
shall be tested as many times as necessary to ensure that all notable features are
evaluated.
When the abrasive anvil is used, evaluate the front, rear, sides and crown areas of the
helmet, selecting within these general areas, sites on the outer surface which are likely
to produce the greatest force and/or the greatest impulse where impulse is the integral of
force with respect to time over the duration of the impact. Examples of such areas are
those having the greatest radius of curvature (i.e. the flattest surface) or areas having
more than one type of surface, for example a visor fixing cover plate or a painted shell
partially overlaid by a fabric cover.
Note: The primary impact site on any projection is likely to be opposite to the site where
the projection receives maximum support. For example, the primary impact site on
a visor cover plate assembly is opposite to the area where the visor and cover
plate locates in a recess in the shell.
When the abrasive anvil is used, evaluate the front, rear sides and crown areas of the
helmet, selecting within the general areas, sites on the outer surface which are likely to
produce the greatest force and/or the greatest impulse where impulse is the integral of
force with respect to time over the duration of the impact. Examples of such areas are
those having least curvature or areas having more than one type of surface finish, for
example a painted shell partially overlaid by a fabric cover.
The rim of the shell and the upper and lower edge of the visor situated within an area
bounded by a sector of 120° divided symmetrically by the vertical longitudinal plane of
symmetry of the helmet do not constitute a projection for the purpose of this test.
7.4.1.4.1. When tested against the bar anvil the helmet shall satisfy the following requirements:
7.4.1.4.1.1. The peak longitudinal force measured on the anvil shall not exceed 2,500N, nor shall its
integral with respect to time over the duration of the impact exceed 12.5Ns for any of the
selected impact points.
7.4.1.4.2. When tested against the abrasive anvil, a second helmet shall satisfy the following
requirements:
7.4.1.4.2.1. The peak longitudinal force measured on the anvil shall not exceed 3,500N, nor shall its
integral with respect to time over the duration of the impact exceed 25Ns for any of the
selected impact points.

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7.4.2.2. Apparatus (a suitable apparatus is illustrated in Annex 8, Figure 1c)
7.4.2.2.1. Description
The test apparatus shall comprise:
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
A horizontal guided carriage with interchangeable attachments for abrasive paper
or a shear edge;
A horizontal guide and support for this carriage;
A roller with a wire rope or a strap or a similar flexible connection;
A lever connecting the headform to the test apparatus with a hinge;
An adjustable system supporting the headform;
A drop weight to load the lower end support of the wire rope, or a strap, after the
weight is released;
A system to support a headform and to apply a force to the helmet normal to the
carriage;
A helmet simulator that can be exchanged by the headform mentioned in (g)
above where accessories can be attached.
7.4.2.2.2. Carriage
For friction assessment the carriage bears a sheet of grade 80 closed-coat aluminium
oxide abrasive paper with a supported length of 300.0 (-0.0/+3.0)mm and securely
clamped to the carriage to prevent slippage. At its end towards the drop weight and in
this direction the carriage has a 80mm ± 1mm long smooth steel area not being covered
by the abrasive paper and higher than the rest of the carriage by the thickness of the
abrasive paper plus 0.5 ± 0.1mm.
For shear assessment the carriage is provided in the middle, with a bar made from a
steel strip of height 6mm and width 25mm with its uppermost edges machined to a 1mm
radius. The bar is case-hardened to a depth of approximately 0.5mm.
The carriage and either attachment shall have a total mass of 5.0 (-0.2/+0.0)kg.
7.4.2.2.3. Horizontal Guide
The horizontal guide which guides and supports the carriage may consist of two
cylindrical bars on which the ball bearings of the carriage may freely travel.
7.4.2.2.4. Roller with a Wire Rope or Strap
The rollers shall have a diameter of at least 60mm and lead the wire rope or strap from
the horizontal into the vertical direction. The horizontal end of the wire rope or strap is
fixed to the carriage, the vertical end is fixed to the drop weight.

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7.4.3. Test for Projections of the Category P/J with Movable Lower Face Cover
7.4.3.1. For strength assessment of the movable face cover in the position "J", the helmet shall
be placed on the appropriate test head form selected from Annex 4 in compliance with
Paragraph 7.3.1.3.1.
7.4.3.2. A device to guide and release a falling mass of 4kg ± 0.01kg shall then be released and
shall drop in a guided free fall from a height of 600 ± 5mm hooked on to the front part of
the chin section in the position "J" in the median vertical plane of the helmet
7.4.3.3. The test apparatus shall be used to apply a shock load to a helmet secured to the
headform by its own retention system. The headform shall be secured in a test fixture
with its vertical axis pointing upward at 45° to the direction of gravity.
This equipment shall allow a drop weight to slide in a guided free fall to impact a rigid
stop anvil. The mass of the guide shall be 1.0 -0.0 +0.2kg. The guiding devices shall be
such as to ensure that the impact speed is not less than 95% of the theoretical speed.
7.4.3.4. The movement must be such to avoid any possible interference of the chin guard with
100mm cylinder as defined in Paragraph 6.4.2. Partial detachment is not acceptable.

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7.6. Dynamic Test of the Retention System (see Annex 8, Figure 2)
7.6.1. The helmet shall be positioned as prescribed in Paragraph 7.3.1.3.1. above.
7.6.2. In this position the helmet is held by the shell at a point traversed by the vertical axis
passing through the centre of gravity of the headform. The headform is equipped with a
load-bearing device aligned with the vertical axis passing through the centre of gravity of
the headform and with a device to measure the vertical displacement of the point of
application of the force. A guide and arrest device for a falling mass shall then be
attached below the headform. The mass of the headform so equipped shall be
15kg ± 0.5kg, which shall be the pre-loading on the retention system for determining the
position from which the vertical displacement of the point of application of the force shall
be measured.
7.6.3. The falling mass of 10kg ± 0.1kg shall then be released and shall drop in a guided free
fall from a height of 750 ± 5mm.
7.6.4. During the test, the dynamic displacement of the point of application of the force shall not
exceed 35mm.
7.6.5. After 2min, the residual displacement of the point of application of the force, as
measured under a mass of 15kg ± 0.5kg, shall not exceed 25mm
7.6.6. Damage to the retention system shall be accepted provided that it is still possible to
remove the helmet easily from the headform. In the case of retention systems fitted with
quick release mechanisms it must be possible to release the mechanism in accordance
with Paragraphs 7.12.2. to 7.12.2.2. The specifications set out in Paragraphs 7.6.4. and
7.6.5. shall be met.
7.7. Retention (Detaching) Test
7.7.1. The helmet, previously conditioned at ambient temperature and hygrometry, is attached
to the appropriate headform, selected from those listed in Annex 4, in accordance with
the requirements of Paragraph 7.3.1.3.1 of this Regulation.
7.7.2. Before the test, the retention system must be capable to maintain the helmet on the
headform. When a load of 3kg ± 0.1kg is hooked to the front border of the shell in the
median vertical plane of the helmet, in reverse position, the angle between the reference
line situated on the shell of the helmet and the reference plane of the headform shall not
exceed 30°.
7.7.3. A device to guide and release a falling mass (the total mass being 3kg ± 0.1kg) is
hooked on to the rear part of the shell in the median vertical plane of the helmet, as
shown in Annex 8, Figure 3.
7.7.4. The falling mass of 10kg ± 0.01kg is then released and drops in a guided free fall from a
height of 0.50m ± 0.01m. The guiding devices shall be such as to ensure that the impact
speed is not less than 95% of the theoretical speed.
7.7.5. After the test the angle between the reference line situated on the shell of the helmet and
the reference plane of the headform shall not exceed 30°.
7.7.6. In modular helmets the test must be done in J and P configuration.

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7.8.2.2. The test apparatus used shall be as described in Paragraph 7.8.2.2.1., the metal punch
being placed in contact with the visor in the vertical symmetrical plane of the headform.
The apparatus shall be designed in such a way that the punch is stopped not less than
5mm above the headform.
7.8.2.2.1. The testing device mentioned in Paragraph 7.8.2.2. above shall have the following
characteristics:
Mass of punch
0.3kg ± 10g
Angle of cone forming punch head 60° ± 1°
Radius of rounded top of punch head
Mass of the drop hammer
0.5mm
3kg ± 25g
7.8.2.2.2. When the drop-hammer falls from a height of 1 + 0,005m, measured between the top
face of the punch and the lower face of the hammer, it shall be ascertained that:
7.8.2.2.3. No sharp splinters are produced if the visor is shattered. Any segment having an angle
less than 60° shall be considered as a sharp splinter.
7.8.2.3. High Speed Particle Test
7.8.2.3.1. Visors shall be tested in accordance with the method specified in Annex 17
7.8.2.3.2. After testing, the following defects shall not occur:
(a)
(b)
(c)
Visor fracture: a visor shall be considered to have fractured if it cracks through its
entire thickness into two or more pieces, or visor material becomes detached from
the surface away from the one struck by the ball, or if the ball passes through the
visor;
Visor deformation: a visor shall be considered to have been deformed if a mark
appears on the white paper on the opposite side to that struck by the ball;
Visor housing failure: a visor housing shall be considered to have failed if it
separates into two or more pieces, or if it is no longer capable of holding a visor in
position.
7.8.3. Optical Qualities and Scratch Resistance
7.8.3.1. Test Procedure
7.8.3.1.1. The test piece shall be taken from the flattest part of the visor in the area specified in
Paragraph 6.16.3.2. and its minimum dimensions shall be 50mm x 50mm. The test shall
be carried out on the face corresponding to the outside of the visor.
7.8.3.1.2. The test piece shall undergo ambient-temperature and hygrometry conditioning in
accordance with Paragraph 7.2.2.

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7.9. Sun Shield Tests
7.9.1. Sampling and Use of Samples
The seven sun shield are used as follows:
Paragraph Test 1 2 3 4 5 6 7 Total
6.17.2. Field of vision of the
sun shield
6.17.2.2. Luminous
transmittance
X 1
X X X 3
6.17.2.4. Recognition of signal
lights
6.17.2.5. Spectral
transmittance
6.17.2.6. Refractive powers X X X 3
7.9.1.1. Prior to any type of further conditioning for optical test, as specified in Paragraph 7.9.1.,
each sun shield shall be subject to the ultraviolet conditioning in accordance with the
provision of Paragraph 7.2.4.1.
7.10. Micro-slip Test of the Chin Strap (see Annex 8, Figure 4)
7.10.1. The test rig consists of a flat horizontal robust base, a weight for applying a load, a freely
rotatable horizontal roller of diameter not less than 20mm, and in the same horizontal
plane as the top of the roller a clamp capable of reciprocating horizontal motion at right
angles to the axis of the roller with a total amplitude of 50 ± 5mm at a frequency between
0.5Hz and 2Hz.
7.10.2. Take a sample of the strap at least 300mm long, including the tensioning and adjusting
device and any additional strap fastening. Fix the upper end of the strap to the
reciprocating clamp level with the top of the roller and drape the strap over the roller.
Attach a weight to the lower end of the strap so that when the weight is lifted by the strap
it imposes a tensile force of 20 ± 1N. Adjust the apparatus so that when the reciprocating
clamp is at the centre of its motion the weight is just resting on the base with the strap
barely in tension and the strap buckle is between the clamp and roller and will not touch
the roller during reciprocation.
7.10.3. Operate the reciprocating clamp for 20 cycles. Note the position of the components on
the strap. Operate the reciprocating clamp for 500 cycles then record the distance
through which the components have slipped along the strap.
7.10.4. The total slippage through the grip shall not exceed 10mm.

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7.12.2. Ease of Release
7.12.2.1. The helmet shall be mounted on the apparatus described in Paragraph 7.6. such that a
static force of 150 ± 5N is applied to the retention system. An additional static force of
350 ± 5N shall be applied to the retention system for at least 30s and then removed.
After the additional force has been removed, the opening system shall be capable of
being operated by a force not exceeding 30N. However, if the quick release mechanism
is incorporated in the helmet shell, the opening system shall be capable of being
operated by a force not exceeding 60N.
7.12.2.2. The buckle opening force shall be applied using a dynamometer or similar device in the
manner and direction of normal use. In the case of a push button the contact end shall
be a polished metal hemisphere with radius 2.5 ± 0.1mm. The opening force shall be
applied on the geometric centre of the push button or respective application areas.
7.12.3. Durability of Quick-release Mechanisms
7.12.3.1. Subject the quick-release mechanism to the following procedures in the order given.
7.12.3.2. Using apparatus appropriate to the particular design of mechanism carry out the
following procedure. Close and lock the mechanism. Apply a loading force of 20 ± 1N in
the direction in which the mechanism is designed to bear load, then unlock and
disengage the mechanism under load. Complete this cycle in not less than 2s. Repeat
for a total of 5,000 cycles.
7.12.3.3. Place the complete mechanism in a closed cabinet so that the mechanism can be
continuously wetted by a spray while still allowing free access of air to all parts of the
mechanism. Subject the mechanism to a spray of a solution consisting of 5 ± 1% (m/m)
of reagent grade sodium chloride in distilled or deionized water for a period of 48 ± 1h at
a temperature of 35 ± 5°C. Rinse the mechanism thoroughly in clean running water to
remove salt deposits and allow it to dry for 24 ± 1h.
Repeat the procedure in Paragraph 7.12.3.2.
7.12.3.4. The quick release mechanism shall not fracture nor disengage when a tensile force of
2.0kN ± 50N is progressively applied to the retention system in the direction in which the
mechanism is designed to bear load. Following the application and removal of the force,
the quick release mechanism shall still be capable of operation.

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7.14. Test of Photochromic Visors, Liquid Crystal or Equivalent Visors
7.14.1. Acceptance Criteria
The photochromic visor is characterized by its luminous transmittance that shall be
determined in faded state � and in darkened state � achieved after 15min irradiation
according with the method specified in Annex 18.
In both states, the requirements specified in 6.16.3.6. (recognition of signal lights) shall
be met.
For photochromic visors, � /� shall be ≥ 1.25.
7.14.2. Visors shall be tested in accordance with the method specified in Annex 18.
8. TEST REPORTS
8.1. Each technical service shall prepare reports on the results of the approval tests and keep
such reports for 10 years. In the case of impact absorption test the report shall indicate,
in addition to the results of the tests, the type of conditioning and the anvil used when
these are at the discretion of the technical service, and the results of the impact on the
fifth site.
8.1. Each technical service shall prepare reports on the results of the approval tests and keep
such reports for 10 years. In the case of the impact absorption test the report shall
indicate, in addition to the results of the tests, the type of conditioning and the anvil used
when these are at the discretion of the technical service, and the results of the impact on
the fifth site.
8.2. Each technical service shall store the raw data of test Paragraph 7.13. to make them
available for the approval authority for the purpose of improvement of the Regulation at a
later stage.
9. PRODUCTION QUALIFICATION
9.1. In order to make sure that the manufacturer's production system is satisfactory, the
technical service which conducted the approval tests must carry out tests to qualify
production in accordance with Paragraphs 9.2 and 9.3.
9.2. Qualifying the Production of Helmets
The production of each new approved type of helmet must be subjected to production
qualification tests.
For this purpose, a random sample of helmets will be taken from the first batch, to be
divided into homogenous lots of 10, choosing the biggest helmet sizes for each shell
size. At least two lots among those subjected to the shock-absorption test shall consist of
maximum size helmets.
The first batch is considered to be the production of the first tranche containing a
minimum of 200 helmets and a maximum of 3,200 helmets.

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9.3. Production Qualification of the Visors Including Inner Visor, if any
9.3.1. Test Group A
The production of each new approved type of visor (approved as such or as forming part
of the helmet) shall be subjected to production qualification tests.
For this purpose, a random sample of 20 visors (30 if the mist-retardant test is involved)
will be taken from the first batch.
The first batch is considered to be the production of the first tranche containing a
minimum of 200 visors and a maximum of 3,200 visors.
light transmission
� Paragraph 6.16.3.4.
recognition of light signals
� Paragraph 6.16.3.6.
spectral transmission
� Paragraph 6.16.3.7.
light diffusion
� Paragraph 6.16.3.5.
optical qualities and resistance to scratches
� Paragraph 7.8.3.
Test Group B
refractivity
� Paragraph 6.16.3.8.
mechanical characteristics
� Paragraph 7.8.2.
Test Group C
mist-retardant � Paragraph 6.16.3.9.
9.3.2. From the 20 visors (30 if the mist-retardant test is involved) take two (or three if the
mist-retardant test is involved) groups each of 10 visors.
9.3.3. The first group of 10 visors will be subjected to each of the tests in Group A, the second
group to each of the tests in Group B (and the third group to the test in Group C if the
mist-retardant test is involved).
9.3.4. The results of the tests described in Paragraph 9.3.3. must comply with the values
prescribed for each approval test.
9.4. Product Qualification Test of Sun Shield
9.4.1. Test Group A
light transmission
- Paragraph 6.15.3.4.
recognition of light signals
- Paragraph 6.15.3.6
spectral transmission
- Paragraph 6.15.3.7.
Test group B
Refractive power - Paragraph 6.15.3.8.

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10.4. The authority which has granted the approval may at any time verify the conformity
control methods applied in each production facility.
10.4.1. At every inspection, the test records and production progress records must be available
to the visiting inspector.
10.4.2. The inspector may select samples at random to be tested in the manufacturer's test
laboratory (in the case where the manufacturer has such a laboratory). The minimum
number of samples may be determined according to the results of the manufacturer's
own verification.
10.4.3. When the level of control appears unsatisfactory, or when it seems necessary to check
the validity of the tests carried out in application of Paragraph 10.4.2., the inspector must
select samples which will be sent to the technical service which conducted the approval
tests.
10.4.4. The relevant authorities may carry out all of the tests prescribed in the present
Regulation.
10.4.5. The relevant authorities must conduct inspections in accordance with Annex 12. In cases
where unsatisfactory results are found during an inspection, the approval authority
must ensure that all necessary steps are taken to restore conformity of production as
rapidly as possible.
10.5. Minimum Conditions for the Control of Conformity of Helmets
10.5.1. Batch Control
In agreement with the relevant authorities, the holder of an approval will undertake the
control of conformity following the method of batch control (Paragraph 10.5.1.).
10.5.1.1. The holder of an approval must divide the helmets into batches which are as uniform as
possible in regard to raw materials or intermediate products involved in their
manufacture, and in regard to production conditions. The numbers in a batch must not
exceed 3,200 units.
In agreement with the relevant authorities the tests can be carried out by the technical
service or by the holder of an approval.
10.5.1.2. For each batch, a sample must be taken in accordance with the provisions of
Paragraph 10.5.1.4. The sample may be taken before the batch is complete provided the
sample is taken from a larger sample consisting of not less than 20% of the final batch
quantity.
10.5.1.3. The size of the helmets and the tests to be conducted are given in Paragraph 10.5.1.4.

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10.5.1.5. The remainder of the tests, not specified in the table above but which have to be
conducted in order to obtain approval, must be conducted at least once per year.
10.5.1.6. The control of helmet conformity is undertaken starting with the batch manufactured after
the first batch which was subjected to production qualification.
10.5.1.7. The test results described in Paragraph 10.5.1.4. must not exceed L, where L is the limit
value prescribed for each approval test.
10.6. Minimum Conditions for the Control of Conformity of Visors Including Inner Visor,
if any
10.6.1. Batch Control
In agreement with the relevant authorities, the holder of an approval will undertake the
control of conformity following the method of batch control (Paragraph 10.6.1.).
10.6.1.1. The holder of an approval must divide the visors into batches which are as uniform as
possible in regard to raw materials or intermediate products involved in their
manufacture, and in regard to production conditions. The numbers in a batch must not
exceed 3,200 units. In agreement with the relevant authorities the tests can be carried
out by the technical service or by the holder of an approval.
10.6.1.2. For each batch, a sample must be taken in accordance with the provisions of
Paragraph 10.6.1.3. The sample may be taken before the batch is complete provided the
sample is taken from a larger sample consisting of not less than 20% of the final batch
quantity.
10.6.1.3. In order to be accepted, a batch of visors must satisfy the following conditions:

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10.7.1. Batch Control
10.7.1.1. The holder of an approval shall divide the universal accessories into batches which are
as uniform as possible in regard to raw materials or intermediate products involved in
their manufacture, and in regard to production conditions. The numbers in a batch shall
not exceed 3,200 units.
In agreement with the relevant authorities the tests can be carried out by the technical
service or by the holder of an approval.
10.7.1.2. For each batch, a sample shall be taken in accordance with the provisions of
Paragraph 10.5.1.4. The sample may be taken before the batch is complete provided the
sample is taken from a larger sample consisting of not less than 20% of the final batch
quantity.
10.7.1.3. In order to be accepted, a batch of universal accessories shall satisfy the following
conditions:
Numbers in the
batch
Number
of
samples
Combined
number of
samples
Tests to be conducted
Group
A
Group
B
Acceptance
criteria
Rejection
criteria
0 < N # 500 1st = 4 10 3 1 0 2
2nd = 4 3 1 1 2 Normal
500 < N # 3,200 1st = 4 10 4 1 0 2
2nd = 4 4 1 1 2 Normal
0 < N # 1,200 1st = 8 16 6 2 0 2
Stringency of
inspection
2nd = 8 6 2 1 2 Strengthened
1200< N # 3,200 1st = 13 26 10 3 0 3
2nd =13 10 3 3 4 Strengthened
Test Group A
Speakers mechanical characteristics, if any, - Paragraph 6.19.7.
Test Group B
Shear and friction Test - Paragraph 6.19.3.
Dimensions of the components shall be checked.
- Paragraph 6.19.4 (if needed)

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13. PRODUCTION DEFINITELY DISCONTINUED
If the holders of the approval completely ceases to manufacture a helmet or a visor type
or an accessory approved in accordance with this Regulation, they shall so inform the
authority which granted the approval.
Upon receiving the relevant communication that authority shall inform thereof the other
Parties to the 1958 Agreement applying this Regulation by means of a communication
form conforming to the model in Annex 1A, Annex 1B or Annex 1C to this Regulation.
14. INFORMATION FOR WEARERS
14.1. Every protective helmet placed on the market shall bear a clearly visible label with the
following inscription in the national language, or at least one of the national languages of
the country of destination.
This information shall contain:
"For adequate protection, this helmet must fit closely and be securely attached. Any
helmet that has sustained a violent impact should be replaced"
and, if fitted with a non protective lower face cover:
"Does not protect chin from impacts" together with the symbol indicating the unsuitability
of the lower face cover to offer any protection against impacts to the chin.
If the helmet is ready for accessories:
A clear description on where to install the accessories by using the reference mark or
marks of Paragraph 6.3. as well as clear indications on how to fit the speakers and/or
microphone or any other component if it is the case.
A general warning shall be given to the user concerning the danger of making any
alterations or additions to the helmet or visor, without the approval of the Type Approval
Authority, that may decrease safety for the user.
A general warning shall be given to the user concerning the danger of fitting non
homologated accessories. Only homologated accessories will maintain the helmet
safety.
A general warning shall be given to the user stating that no accessory shall be mounted
on the helmet if some of the symbols, other than location fitting symbols, marked in the
accessory homologation is not marked in the helmet homologation label.
For location fitting symbols, "F", "L" and "R", a universal accessory will be able to be
fitted if it is supplied with a support or supports marked with helmet available accessories
fitting locations. The support used shall match the helmet location used. The support
marking will add, after the "F" and "R" marking of fitting locations, the symbols "R", if it
has to be fitted on the right side of the helmet, or "L" if it has to be fitted on the left side of
the helmet.

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14.7. Every visor placed on the market as a separate technical unit shall be accompanied by
information in the national language, or in at least one of the national languages, of the
country of destination. This information shall contain advice on the protective helmets for
which the visor is suitable and information on those aspects specified in
Paragraphs 14.6.1. to 14.6.6. where such information is different to that which
accompanied the visor that was placed on the market with the protective helmets for
which the visor is stated to be suitable.
14.8. Every universal accessory placed on the market shall be accompanied by information in
the national language, or in at least one of the national languages, of the country of
destination.
This information shall contain advice on how to install it in the suitable helmets and
information on those aspects specified in Paragraphs 14.6.1. to 14.6.2. The instructions
shall refer to the helmet owner manual for the right installation place.
A general warning shall be given to the user stating that no accessory shall be mounted on
helmets whose symbols, other than location fitting symbols, marked in the helmet homologation
label do not include all the symbols marked in the accessory homologation label.
A warning shall be given to the user stating that:
(a)
(b)
For location fitting symbols, "F", "L" and "R", the accessory will be able to be fitted
if it is supplied with a support or supports marked with helmet available
accessories fitting locations. The support used shall match the helmet location
used. The support marking is adding, after the "F" and "R" marking of fitting
locations, the symbols "R", if it has to be fitted on the right side of the helmet,
or "L" if it has to be fitted on the left side of the helmet.
When the accessory has different components to be fitted in different helmet
locations, the accessory locations marking are between brackets and with a "+"
symbol in between location markings, the helmet shall bear all the accessory
locations marking displayed between brackets.
A warning shall be given to the user both in the packaging and in the owner's manual
indicating the left or right mounting position possibilities of the accessory.
14.9. For universal accessory the following label shall be included in the instructions provided
by the accessory manufacturer:
(a)
Notice
This is a "Universal" accessory. It is approved to UN Regulation No. 22,
06 series of amendments, for general use in helmets ready for "UA" accessories and it will fit
most, but not all, helmets.
A correct fit is likely if the helmet manufacturer has declared in the helmet handbook that the
helmet is capable of accepting a "Universal" accessory and it is marked as such in the
homologation label of the helmet.
If in doubt, consult either the accessory manufacturer, the helmet manufacturer or the retailer.

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ANNEX 1A
COMMUNICATION
(Maximum format : A4 (210 x 297mm))
issued by:
Name of administration
.......................................
.......................................
.......................................
Concerning
APPROVAL GRANTED
APPROVAL EXTENDED
APPROVAL REFUSED
APPROVAL WITHDRAWN
PRODUCTION DEFINITELY DISCONTINUED
of a type of protective helmet without/with one/more visor type(s) without/with one/more specific
accessory type(s) pursuant to UN Regulation No. 22.
Approval No. ................................................ Extension No. .........................................................................
1. Trade mark: .............................................................................................................................
2. Type: ........................................................................................................................................
3. Sizes: .......................................................................................................................................
4. Manufacturer's name: ..............................................................................................................
5. Address: ..................................................................................................................................
6. If applicable, name of manufacturer's representative:.............................................................
7. Address: ..................................................................................................................................
8. Brief description of helmet: ......................................................................................................
9. Helmet without lower face cover (J)/with protective lower face cover
... (P)/with non-protective lower face cover (NP)/with detachable or movable lower
face cover (P/J)

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ANNEX 1B
COMMUNICATION
(Maximum format : A4 (210 x 297mm))
issued by:
Name of administration:
.......................................
.......................................
.......................................
Concerning
APPROVAL GRANTED
APPROVAL EXTENDED
APPROVAL REFUSED
APPROVAL WITHDRAWN
PRODUCTION DEFINITELY DISCONTINUED
of a type of helmet visor pursuant to UN Regulation No. 22
Approval No. ................................................ Extension No. .........................................................................
1. Trade mark: .............................................................................................................................
2. Type: ........................................................................................................................................
3. Manufacturer's name: ..............................................................................................................
4. Address: ..................................................................................................................................
5. If applicable, name of manufacturer's representative:.............................................................
6. Address: ..................................................................................................................................
7. Brief description of visor, and inner visor if any: ......................................................................
8. Types of helmet to which the visor may be fitted: ...................................................................
9. Submitted for approval on: ......................................................................................................
10. Technical service responsible for conducting approval tests: .................................................
12. Number of report issued by that service: .................................................................................
13. Remarks: .................................................................................................................................

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ANNEX 1C
COMMUNICATION
(Maximum format: A4 (210 × 297mm))
issued by:
Name of administration:
.....................................
.....................................
.....................................
Concerning:
Approval granted
Approval extended
Approval refused
Approval withdrawn
Production definitively discontinued
of a type of a helmet accessory pursuant to UN Regulation No. 22
Approval No.: ............................................................. Extension No.: ..........................................................
1. Trade mark: .........................................................................................................................................
2. Type: ....................................................................................................................................................
3. Manufacturer's name: ..........................................................................................................................
4. Address: ..............................................................................................................................................
5. If applicable, name of manufacturer's representative: ........................................................................
6. Address: ..............................................................................................................................................
7. Brief description of the accessory/ies (functionality/ies) : ..................................................................
8. Accessory: Specific Accessory (SA)/Universal Accessory (UA)
9. For a SA type helmet to which the accessory may be fitted: ..............................................................
10. For a UA type helmet, with speakers (S or S45)/microphone (M)/mounting location (F) (L) (R)
11. Submitted for approval on: ..................................................................................................................
12. Technical Service responsible for conducting approval tests: ............................................................

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ANNEX 2A
I. PROTECTIVE HELMET
EXAMPLE OF THE ARRANGEMENT OF APPROVAL MARK FOR A PROTECTIVE HELMET
WITHOUT OR WITH ONE OR MORE TYPES OF VISOR, WITHOUT/WITH ONE/MORE FITTING
POSSIBILITIES OF UNIVERSAL ACCESSORIES TYPE(S)
(See Paragraph 5.1. of this Regulation)
The above approval mark affixed to a protective helmet shows that the helmet type concerned has been
approved in the Netherlands (E4) under Approval Number 061406.
The approval number shows that this approval concerns a helmet which has a lower face protective
cover (P) and was granted in accordance with the requirements of UN Regulation No. 22 already
incorporating the 06 series of amendments at the time of approval, that it can be fitted with a universal
accessory having speakers and mounted in the front or in the side of the helmet and that its production
serial number is 1952.
Note:
The approval number and the production serial number shall be placed close to the circle and either
above or below the Letter "E" or to the left or right of that letter. The digits of the approval number and of
the production serial number shall be on the same side of the Letter "E" and face the same direction. The
use of Roman numerals as approval numbers should be avoided so as to prevent any confusion with
other symbols.

---

ANNEX 2B
EXAMPLE OF THE ARRANGEMENT OF THE APPROVAL MARK FOR A HELMET VISOR
(See Paragraph 5.2.7. of this Regulation)
The above approval mark affixed to a visor shows that the visor type concerned has been approved in
the Netherlands (E4) under Approval Number 065413. The approval number shows that approval was
granted in accordance with the requirements of the Regulation incorporating the 06 series of
amendments at the time of approval and that its production serial number is 1952.
Note:
The approval number and the production serial number shall be placed close to the circle and either
above or below the Letter "E" or to the left or right of that letter. The digits of the approval number and of
the production serial number shall be on the same side of the Letter "E" and face the same direction. The
use of Roman numerals as approval numbers should be avoided so as to prevent any confusion with
other symbols.

---

EXAMPLE OF THE ARRANGEMENT OF THE APPROVAL MARK FOR A UNIVERSAL ACCESSORY
THAT WILL USE TWO HELMET LOCATIONS
The above approval mark affixed to a universal accessory shows that the universal accessory type
concerned has been approved in the Netherlands (E 4) under approval number 065413. The approval
number shows that approval was granted in accordance with the requirements of the Regulation
incorporating the 06 series of amendments at the time of approval, that its production batch is 1952 and
that is approved for Side and Rear mounting, each mounting position used by one accessory component,
and has Microphone and Speakers.
Note:
The approval number and the production batch number shall be placed close to the circle and either
above or below the Letter "E" or to the left or right of that letter. The digits of the approval number and of
the production batch number shall be on the same side of the Letter "E" and face the same direction. The
use of Roman numerals as approval numbers should be avoided so as to prevent any confusion with
other symbols.
Due to space restrictions, the approval number could be placed on the side of the accessory facing to the
helmet provided that the accessory will have a support plate and that can be easily detachable without
any tool for checking.

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ANNEX 3
DIAGRAM OF PROTECTIVE HELMET

---

Figure 2a
Peripheral Vision

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Figure 2c
Peripheral Vision � Horizontal Field

---

Figure 3
Identification of Points of Impact

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ANNEX 6
REFERENCE HEADFORMS (SHAPE, DIMENSIONS)
Section on a vertical longitudinal plane
Key
1 AA' plane
2 reference plane
3 basic plane
4 point A
5 point R
6 point G
7 central vertical axis
Figure 1
Principal Planes and Reference Points of a Headform

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Table B.1
At and Above the Reference Plane
Angle
V
Angle
H
Equation to Define
Radius, R
Angle H
Equation to Define
Radius, R
Angle
H
Equation to Define
Radius, R
90

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Angle
V
Angle
H
Equation to Define
Radius, R
Angle H
Equation to Define
Radius, R
Angle
H
Equation to Define
Radius, R
90
180
0,1 62 x C + 9,082 1
80
0,164 3 x C + 9,491 6
70
0,163 4 x C + 11,462
60
0,162 4 x C + 12,789
50
0,1621 x C + 12,914
40
0,162 2 x C + 12,172
30
0,162 2 x C + 11,166
20
0,1616 x C + 10,277
10
0,161 1 x C + 9,3042

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55 0,157 6 x C + 9,453 3 0,163 2 x C + 7,838 1 0,162 X C + 9,401 3
60 0,179 6 x C + 11,317 0,187 3 x C + 9,042 5 0,186 2 x C + 10,804
65 0,212 5 x C + 13,609 0,221 8 x C + 10,794 0,220 3 x C + 13,024
10
135
0,138 4 x C + 8,449 9
150
0,145 8 x C + 8,803 4
165
0,151 x C + 9,0546
20
0,1328 x C + 7,806
0,139 3 x C + 8,430 1
0,144 6 x C + 8,252
30
0,132 5 x C + 7,377 6
0,138 4 x C + 8,037 1
0,141 5 x C + 8,247 5
40
0,135 3 x C + 7,93 76
0,139 x C + 8,460 1
0,140 8 x C + 8,658 6
46
0,1411 x C + 8,5164
0,1429 x C + 9,181 6
0,144 7 x C + 9,1792
50
0,148 5 x C + 9,111 8
0,149 x C + 9,932 8
0,151 2 x C + 9,83
52
0,153 6 x C + 9,514 2
0,153 7 x C + 10,41
0,156 1 x C + 10,288
55
0, 163 5 x C + 10,286
0,1632 x C + 11,271
0,166 1 x C + 11,164
60
0,187 1 x C + 12,058
0,187 x C + 13,127
0,190 6 x C + 13,106
65
0,222 1 x C + 14,23
0,222 X C + 15,467
0,226 2 X C + 15,31

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ANNEX 7
OBLIQUE IMPACT TEST METHOD OF MEASURING ROTATIONAL ACCELERATION
1. SCOPE
The test method is designed to measure the oblique impact rotational kinematics against an
anvil.
2. HEADFORM
2.1. General
2.2. Shape
The head form shall not exhibit any resonant frequencies below 2,000Hz.
The shape of the head form shall conform to the specifications in the Paragraph 7.3.3.
2.3. Mass, Centrum of Gravity (CoG) and Moment of Inertia (MOI)
Headform
Denomination
Table 1
Properties of the Headforms
The headform inertia matrix of reference for the homologation is according to Table 1 (principal
directions only, with regards to the centre of gravity):
Circumference
[mm)
Mass [Kg)
lxx [Kg cm"]
(± 5%)
lyy [Kgcm")
(± 5%)
lzz [Kg cm ")
(± 5%)
A 495• 3.1 (± 0.10) 142.2 166.6 95.0
C 515' 36 (± 0.10) 172.6 203.3 113.2
E 535• 4.1 (± 0.12) 202.9 238.6 141.3
J 575• 4 7 (± 0.14) 264.0 318.3 193.1
M 605' 5 6 (± 0.16) 337.4 402.7 252.7
0 625' 6.1 (± 0.18) 383.6 461.1 293.5
Tolerances according to UN 960:2006
Note: X axis => rear to nose - Y axis => ear to ear - Z axis => vertical
2.4. Outer Surface Specification
The coefficient of friction (μ) shall be 0.3 ± 0.05 between the outer surface of the head form and
the common fabric used in the comfort padding of the helmet.

---

2.7. Headform Coefficient of Friction Calibration Test
The headform shall be positioned so that the head form bottom plan is horizontal. The head
form Z-axis shall point in the positive vertical axis. A 30mm flexible band shall be used as
shown in Figure 1. The flexible band shall consist of a nylon band covered with a cotton
surface. The flexible band shall show a minimum elastic modulus of 4N/mm. The quality of the
pure cotton fabric, regular, not printed, shall have a density of 125gr/m ± 25gr.
The flexible band shall then be positioned to cover one quarter of the headform. At one end a
mass of 2kg shall be attached, and at the other end a force gauge shall be used. A number of
n. 3 pulling cycles shall be completed and then it will be measured the average maximum
pulling force on the following n. 5 cycles. This force shall be between 25-27N.
Figure 1
Test Set Up to Measure the Coefficient of Friction

---

3.2.3. Guidance System and Helmet Carrier
Figure 2
Test Apparatus
The guidance system shall provide for the positioning of any initial head form angle and impact
point on the helmet vertically above the anvil, within a radius of 10mm.
The guidance system shall be attached to the helmet carrier that maintains the headform and
the helmet in its initial position during the raise and drop of the head form/helmet assembly by
limiting the rotation to a maximum of 5°.
The helmet carrier shall not affect the head form/helmet assembly during the impact meaning
no less than 30ms from initial contact between helmet and anvil.
3.3. Measuring the Impact Speed
The head form/helmet assembly speed shall be measured with an uncertainty of ± 0.01m/s at a
distance not more than 60mm prior to impact.
3.4. Procedure
Position the assembly so as to present the specified head form angle and impact point over the
anvil, then raise to the required drop height and release. The impact speed shall be 8.0
(+ 0.15/- 0.0) m/s. Cable(s), if attached, shall not interfere with the helmet motion.

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ANNEX 8
TEST MACHINES HEADFORM – DROP ASSEMBLY
Figure 1a

---

Figure 1c
Example of a Suitable Test Apparatus for Projections and Surface Friction
(Method B)

---

Figure 2
Dynamic Test of Retention System

---

Figure 4
Apparatus for Testing Slippage of the Chin Strap

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ANNEX 9
TESTING OF THE ANGLE OF OPENING OF THE VISOR
The secant line MN is the straight line joining the points of the upper and lower edges of the visor
contained in the median vertical plane of the helmet.

---

Figure 1
Sand Spray Equipment
1.
Parts of gravity tube
2.
Container with discharge jet as Figure 2, containing at least 3kg sand
3.
Upper sieve
4.
Lower sieve
5.
Test piece
6.
Test piece holder (turnable)

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B
B
M
IB
IB
LB
Annular diaphragm: diameter of outer circle 21.00mm; diameter of inner circle
15.75mm
Circular diaphragm: diameter of aperture 7.5mm
Silicon detector corrected according to curve V (�) with diffusing screen MS
Iris-diaphragm to adjust diameter of field of observation, diameter 40mm
Iris-diaphragm to eliminate edge effects from IB
Circular diaphragm, diameter of aperture 1mm
P, P' Positions of visor.
Spherical mirror H forms an image of light source L at Diaphragm LB which is in the focal
plane of H . The concave mirror H forms an image of Diaphragm LB in the plane of
Diaphragms B and B . The achromatic Lens A is positioned immediately behind the
diaphragm so that a reduced image of the test sample in position P appears on diffusing
screen MS. The image of iris-Diaphragm IB is simultaneously formed on IB .
1.2. Measurement
The visor is positioned in the parallel beam to position P, then Diaphragm B is set in
place. The flux T falling onto the detector corresponds to the undiffused light transmitted
by the sample. Diaphragm B is then replaced by annular Diaphragm B ; flux T falling
onto the detector corresponds to the total diffused light originating from the visor and from
the apparatus. The visor is then placed at position P'. Flux T falling onto the detector
corresponds to the diffused light coming from the apparatus only. The visor is then brought
out of the light beam (e.g. between P and P'). The flux T falling on the detector with the
Diaphragm BL in place corresponds to the total light.
1.3. Optical Qualities; Definitions
1.3.1. Luminous transmittance:
� = T / T x 100
1.3.2. Light diffusion before abrasion DB:
DB = 597 x (T - T )/T
1.3.3. Light diffusion after abrasion:
DA = 597 x (T - T )/T

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2.3.
Optical Quantities Definitions
2.3.1.
The luminous transmittance is given by:
(T /T ) x 100
2.3.2.
The light diffusion before abrasion is given by:
DB = (T - T
) x 100/T ; T
=T x(T /T )
2.3.3.
The light diffusion after abrasion is given by:
DA = (T – T
) x 100/T
Note:
Markings DA and DB correspond to Paragraph 1.3. of this Annex.
Figure 1
Test Equipment
Figure 2
Annular Diaphragm D

---

Obtain the reduced luminance factor for the apparatus, I , for the solid angle � using the
following equation:
I
1 �
� �
� �
Where �
is the luminance flux without the visor in the parallel beam and with the
annular Diaphragm B in place
�
�
is the luminance flux without the visor in the parallel beam and with circular
Diaphragm B in place
is the solid angle defined by the annular Diaphragm B
3.2.2. Testing of the Visor
Place the visor in the parallel beam at position P as shown in Figure 3. Repeat
Paragraph 3.2.1. with the visor in place, and with the visor rotated about the axis of the
beam to a position such that the prismatic deviation by the visor is horizontal. Rotate the
detector part of the apparatus so that the light beam falls on the centre of B . Obtain the
reduced luminance factor for the apparatus including the visor, I , for the solid angle �
using the following equation:
I
1 �
� �
� �
Where �
is the luminance flux with the visor in the parallel beam and with the annular
Diaphragm B in place
�
�
is the luminance flux without the visor in the parallel beam and with circular
Diaphragm B in place
is the solid angle defined by the annular Diaphragm B
Then calculate the reduced luminance factor I of the ocular using the following equation:
I
� I
� I

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ANNEX 12
TYPE APPROVAL SCHEME (FLOW CHART)
Type Approval Scheme (Flow Chart)

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ANNEX 13
DEFINITIONS
The luminous transmittance T is defined as:
The relative visual attenuation quotient Q is defined as:
Where:
T
is the luminous transmittance of the visor relative to the standard illuminant D65
T is the luminous transmittance of the visor relative to the spectral power distribution of the traffic
signal light and it is given by the following equation:
Where:
S
(�)
is the spectral distribution of radiation of CIE standard illuminant A (or 3,200K light source for
blue signal light). See: ISO/CIE 10526, "CIE standard colorimetric illuminants";
S (�) is the spectral distribution of radiation of CIE standard illuminant D65. See: ISO/CIE 10526,
"CIE standard colorimetric illuminants";
V(�)
T (�)
T (�)
is the spectral visibility function for daylight vision. See: ISO/CIE 10527, "CIE standard
colorimetric observers";
is the spectral transmittance of the traffic signal lens;
is the spectral transmittance of the visor.
The spectral value of the product of the spectral distributions (S (�) S (�)) of the illuminant,
the spectral visibility function V(�) of the eye and the spectral transmittance T (�) of the traffic
signal lenses are given in Annex B.

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Wavelength
�
nm
S
(�) V (�)
Wave Length
�
nm
S
(�) V(�)
Wave Length
�
nm
S
(A) V (�)
490 1,0710 625 1,2985 760 0,0001
495 1,3347 630 1,0443 765 0,0001
500 1,6713 635 0,8573 770 0,0001
505 2,0925 640 0,6931 775 0,0001
510 2,5657 645 0,5353 780 0,0000
Sum 100,000
SPECTRAL DISTRIBUTION OF RADIATION IN INCANDESCENT SIGNAL LIGHTS WEIGHTED BY
THE SENSITIVITY OF THE HUMAN EYE V(�)
Table H.1
Spectral Distribution of Radiation in Signal Lights Weighted by the Sensitivity of the
Human Eye V(�)
Wave length Red Yellow Green Blue
�
(nm)
E Red (�)
•V(�)
E Yellow(�)
•V(�)
E Green(�)
•V(�)
E Blue(�)
•V(�)
380 0,000 0,000 0,000 0,000
385 0,000 0,000 0,000 0,000
390 0,000 0,000 0,000 0,000
395 0,000 0,000 0,000 0,000
400 0,000 0,000 0,000 0,010
405 0,000 0,000 0,000 0,010
410 0,000 0,000 0,000 0,030
415 0,000 0,000 0,000 0,060
420 0,000 0,000 0,000 0,120
425 0,000 0,000 0,000 0,250
430 0,000 0,000 0,000 0,440
435 0,000 0,000 0,010 0,680
440 0,000 0,000 0,020 0,970
445 0,000 0,000 0,030 1,260

---

Wave length Red Yellow Green Blue
�
(nm)
E Red (�)
•V(�)
E Yellow(�)
•V(�)
E Green(�)
•V(�)
E Blue(�)
•V(�)
590 3,320 5,160 1,790 0,240
595 5,400 4,940 1,050 0,230
600 7,320 4,670 0,400 0,230
605 8,750 4,380 0,120 0,180
610 9,350 4,040 0,050 0,130
615 9,320 3,640 0,060 0,100
620 8,950 3,270 0,090 0,060
625 8,080 2,840 0,110 0,070
630 7,070 2,420 0,100 0,070
635 6,100 2,030 0,070 0,160
640 5,150 1,700 0,040 0,210
645 4,230 1,390 0,020 0,430
650 3,410 1,110 0,020 0,540
655 2,690 0,870 0,010 0,420
660 2,090 0,670 0,000 0,320
665 1,570 0,510 0,000 0,210
670 1,150 0,370 0,000 0,140
675 0,850 0,280 0,000 0,260
680 0,640 0,210 0,000 0,300
685 0,470 0,150 0,000 0,320
690 0,330 0,100 0,000 0,300
695 0,240 0,070 0,000 0,230
700 0,180 0,060 0,010 0,180
705 0,130 0,040 0,020 0,130
710 0,090 0,030 0,020 0,100
715 0,070 0,020 0,020 0,070
720 0,050 0,010 0,020 0,050
725 0,030 0,010 0,020 0,030

---

� (nm)
E'Red(�) V(�)
E'Yellow(�) V(�)
E'Green(�) V(�)
E'Blue(�) V(�)
425
0,000
0,000
0,000
0,010
430
0,000
0,000
0,000
0,050
435
0,000
0,000
0,000
0,170
440
0,000
0,000
0,010
0,550
445
0,000
0,000
0,010
1,650
450
0,000
0,000
0,020
4,470
455
0,000
0,000
0,040
9,600
460
0,000
0,000
0,090
14,170
465
0,000
0,000
0,190
13,990
470
0,000
0,000
0,450
11,180
475
0,000
0,000
1,010
9,070
480
0,000
0,000
2,130
7,370
485
0,000
0,000
4,000
5,470
490
0,000
0,000
6,530
4,210
495
0,000
0,000
9,380
3,380
500
0,000
0,000
11,340
2,690
505
0,000
0,000
11,820
2,160
510
0,000
0,000
11,150
1,760
515
0,000
0,000
9,840
1,410
520
0,000
0,010
8,220
1,140
525
0,000
0,010
6,550
0,900
530
0,000
0,020
4,890
0,690
535
0,000
0,030
3,570
0,570
540
0,000
0,050
2,630
0,480
545
0,000
0,120
1,870
0,410
550
0,000
0,240
1, 290
0,330
555
0,010
0,500
0,930
0,270
560
0,020
1,000
0,630
0, 220
565
0,040
1,850
0,430
0, 220

---

Wavelength
Red LED
Yellow LED
Green LED
Blue LED
� (nm)
E'Red(�) V(�)
E'Yellow(�) V(�)
E'Green(�) V(�)
E'Blue(�) V(�)
715
0,000
0,000
0,000
0,000
720
0,000
0,000
0,000
0,000
725
0,000
0,000
0,000
0,000
730
0,000
0,000
0,000
0,000
735
0,000
0,000
0,000
0,000
740
0,000
0,000
0,000
0,000
745
0,000
0,000
0,000
0,000
750
0,000
0,000
0,000
0,000
755
0,000
0,000
0,000
0,000
760
0,000
0,000
0,000
0,000
765
0,000
0,000
0,000
0,000
770
0,000
0,000
0,000
0,000
775
0,000
0,000
0,000
0,000
780
0,000
0,000
0,000
0,000
Sum
100,000
100,000
100,000
100,000

---

1.2. Arrangement and Calibration of Apparatus
The telescope and illuminated target are placed on the same optical axis 4.60 ± 0.02m apart.
The observer focuses the reticule and the target and aligns the telescope to obtain a clear
image of the pattern. This setting is regarded as the zero point of the focusing scale of the
telescope.
The focusing adjustment of the telescope is calibrated with the calibration lenses
(Paragraph 1.1.4.) so that a power of 0.01m may be measured. Any other calibration method
may be used.
1.3. Procedure
The visor is mounted in front of the telescope as worn and measurements shall be taken at the
sign points as specified in Paragraph 6.15.3.8.
1.3.1. Spherical and Astigmatic Refractive Powers
1.3.1.1. Visors without Astigmatic Refractive Power
The telescope is adjusted until the image of the target is perfectly resolved.
The spherical power of the visor is then read from the scale of the telescope.
1.3.1.2. Visor with Astigmatic Refractive Power
The target, on the visor, is rotated in order to align the principal meridians of the visor with the
bars on the target. The telescope is focused firstly on one set of bars (measurement D ) and
D � D
then on the perpendicular bars (measurement D ). The spherical power is the mean, ,
2
the astigmatic refractive power is the absolute difference, � D � D �, of the two
measurements.
2. DETERMINATION OF THE DIFFERENCE IN PRISMATIC REFRACTIVE POWER
2.1. Apparatus
The arrangement of the reference method is shown in Figure 2.
2.2.1. Procedure
The Diaphragm LB , illuminated by the light source, is adjusted in such a way that it produces
an image on the Plane B when the visor (P) is not in position. The visor is placed in front of the
Lens L so that the axis of the visor is parallel to the optical axis of the test assembly.
Adjustable tilt visors are positioned with their ocular regions normal to the optical axis of the
equipment.
Measure the vertical and horizontal distance between the two displaced images arising from
the two ocular areas of the visor.

---

ANNEX 16
TEST FOR MIST-RETARDANT VISOR
1. APPARATUS
Apparatus to determine the change in the non-diffused transmittance value, as shown in
Figure 1.
The nominal diameter of the parallel beam is 10mm. The size of the beam divider, Reflector R
and Lens L shall be selected in such a way that diffused light is captured up to an angle of
0.75°. If a Lens L with a nominal focal length f = 400mm is used, the nominal diameter of a
diaphragm is 10mm. The plane of the diaphragm must lie within the focal plane of the Lens L .
The following focal lengths f of the Lens L are nominal examples and will not affect the test
results:
f = 10mm and f = 100mm
The light source shall be laser with a wavelength of 600 ± 70nm. The volume of air above the
water bath is at least 4L. The seating ring has a nominal diameter of 35mm and a nominal
height of 24mm is then measured to the highest point of the seating ring. A soft rubber ring,
3mm thick and 3mm wide (nominal dimensions), is inserted between the sample and the
seating ring.
The water bath container also contains a ventilator to circulate the air. In addition, there must
also be a device to stabilise the temperature on the water bath.
2. SAMPLES
At least 3 samples of the same type are to be tested. Before the test, the samples are
conditioned for one hour in distilled water (at least 5cm water per cm sample surface area) at
23 ± 5°C, then dabbed dry and then conditioned in air for at least 12h at 23 ± 5°C and 50%
nominal relative humidity.
3. PROCEDURE AND EVALUATION
The ambient temperature during the measurement is 23 ± 5°C.
The temperature of the water bath is set at 50 ± 0.5°C. The air above the water bath is
circulated using a ventilator, so that it becomes saturated with water vapour. During this time,
the measurement opening is to be covered. The ventilator is switched off before the
measurement.

---

ANNEX 17
HIGH SPEED PARTICLE TEST FOR VISORS
1. SCOPE
Test for visor resistance to high-speed particles
2. APPARATUS
2.1. Headform
Appropriate headform, as defined in 7.3.3.
2.2. Propulsion Equipment
The apparatus shall be capable of imparting known speeds of up to 80m/s to a 6mm nominal
diameter steel ball of 0,86g minimum mass.
Note 1: The apparatus consists fundamentally of a barrel or tube of sufficient length to ensure a
reproducible exit speed of the steel ball, with a breech or loading mechanism ensuring
that the ball is in a given position in relation to the tube or barrel end, and of a spring or
compressed gas to provide propulsion.
The apparatus also includes a means of calibrating or measuring the exit speed of the
ball; because of the speed and distances involved, a timing indicator, recording in
multiples of not greater than 10μs is required.
The measurement of speed should be made as near as possible to the point of impact.
The end of the barrel or tube should be protected against ricochets.
The area surrounding the test specimen, the head-form and the barrel or tube should be
enclosed.
Note 2: The tube length should be chosen to ensure that the required speed for the ball is
achieved.
Note 3: For the time measurement, a method using an electronic timer operated by photoelectric
cells through amplifiers has been found suitable.
The distance between the sensing elements should not exceed 150mm.

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ANNEX 18
TEST FOR PHOTOCHROMIC, LIQUID CRYSTAL VISORS
1. SCOPE
To define the maximum and the minimum light transmittance of a visor capable of two different
levels, as photochromic, liquid crystal or equivalent visors.
2. APPARATUS
2.1. Light Source(s) to Approximate the Spectral Distribution of Solar Radiation for Air Mass
m = 2 for Testing
Testing shall be done with a Xenon high-pressure lamp with filters chosen so that the specified
illuminance of (50,000 ± 5,000) lx and the irradiance values (with permitted tolerances) given in
the following table are reached.
Wavelength range
nm
Irradiance
W•m-2
Tolerance
W•m-2
300 – 340 < 2,5 -
340 – 380 5,6 ±1,5
380 – 420 12,0 ±3,0
420 – 460 20,0 ±3,0
460 – 500 26,0 ±2,6
2.1.1. Radiation Source Using One Lamp
Use an ozone free high-pressure xenon arc lamp, a heat absorbing filter and a cut-on filter as
specified in the following table:

---

ANNEX 19
GUIDELINE
A - Sampling
Helmet configuration 1:
Shell 1: L(59-60), XL(61-62), XXL(63-64)
Shell 2: XS(53-54), S(55-56), M(57-58)
Approval test sampling:
-2 samples XXL(63-64) for Rigidity test of the shell 1
-5 samples XXL(63-64) for Impact Absorption
-2 samples XXL(63-64) for Oblique impact test
-1 sample XL(61-62) for checking coverage area and field of vision requirements
-2 samples of the shell 1 size chosen as worst case for Extra point
-2 samples of the shell 1 size chosen as worst case for High/Low energy Impact
-2 samples L(59-60) for Impact Absorption
-1 sample L(59-60) for retention system tests (Detaching + Dynamic test)
-1 sample M(57-58) for Projection and surface friction (This sample is chosen to representative of both
shells)
-2 samples M(57-58) for Rigidity test of the shell 2
-5 samples M(57-58) for Impact Absorption
-2 samples M(57-58) for Oblique impact test
-1 sample S(55-56) for checking coverage area and field of vision requirements
-2 samples of the shell 2 size chosen as worst case for Extra point
-2 samples of the shell 2 size chosen as worst case for Hi/Low energy Impact
-2 samples XS(53-54) for Impact Absorption
-1 sample XS(53-54) for retention system tests (Detaching + Dynamic test)
Total samples: 35

---

-2 samples S(55-56) for Rigidity test of the shell 3
-5 samples S(55-56) for Impact Absorption
-2 samples S(55-56) for Oblique impact test
-2 samples of the shell 3 size chosen as worst case for Extra point
-2 samples of the shell 3 size chosen as worst case for Hi/Low energy Impact
-1 sample XS(53-54) for retention system tests (Detaching + Dynamic test)
Total samples: 45
Production Qualification test sampling:
-20 samples XXL(63-64) for Impact Absorption Shell 1
-20 samples M(57-58) for Impact Absorption Shell 2
-20 samples S(55-56) for Impact Absorption Shell 3
-10 samples XL(61-62) for Dynamic retention system test Shell 1
-10 samples M(57-58) for Dynamic retention system test Shell 2
-10 samples XS(53-54) for Dynamic retention system test Shell 3
Total samples: 90
Helmet configuration 3:
Shell 1: XS(53-54), S(55-56), M(57-58), L(59-60), XL(61-62), XXL(63-64)
Approval test sampling:
-2 samples XXL(63-64) for Rigidity test
-5 samples XXL(63-64) for Impact Absorption
-2 samples XXL(63-64) for Oblique impact test
-1 sample XL(61-62) for checking coverage area and field of vision requirements
-2 samples size chosen as worst case for Extra point
-2 samples size chosen as worst case for Hi/Low energy Impact
-2 samples L(59-60) for Impact Absorption
-1 sample M(57-58) for Projection and surface friction

---

ANNEX 20
ACCESSORIES ASSESSMENT AND ATTACHMENT SPACE DIMENSIONS
FOR UNIVERSAL ACCESSORY HELMETS
1. PART 1. ACCESSORIES ASSESSMENT
1.1. Measurement of the Maximum Dimensions of Externally Fitted Accessories:
For the measurement of the dimensions, only the accessory and the support, if any, must be
measured. If the device is fitted with a foldable antenna, the system shall fit in the fixture
with the antenna in the folded position. If the antenna is flexible, the antenna may exceed
the fixture dimensions.
Flexible, thin components can exceed the volume or can be assembled separately on the
shell.
Inner clamp, if any, can exceed the fixture only to occupy the protective padding space
provided by the helmet.
For side and rear mounting support, it is allowed to exceed the fixture dimensions to allow
enough bonding surface provided that all other prescriptions on this Regulation will be met.
Accessories shall fit in the following fixtures dimensions:
1.1.1. For Front Mounted Accessories:
Figure 1
Fixture for Left Front- Side Mounting (for Right Side Mounting Apply Symmetry)

---

1.2. Maximum Dimensions of Speakers and Microphones:
1.2.1. Speakers
1.2.2. Microphone
The speakers, without foam and adhesive tape, shall be contained in a cylinder of 40mm
diameter and 12mm thick for "S" marking or in a cylinder of 45mm diameter and 12mm thick
for "S45" marking.
The microphone shall be contained in a parallelepiped of the following dimensions:
Length: 35mm
Width: 18mm
Height (dimension from the chin protective pad towards the headform): 12mm
The boom, if any, shall be flexible and have an external diameter not exceeding 10mm
1.3. Mechanical Characterization of the Speakers:
1.3.1. The speaker, with a height of more than 6mm, shall be placed between two parallel plates
by means of which a known load can be applied, the surface of the plates shall be large
enough to contain a circle of at least 65mm in diameter.
1.3.1.1. Procedure
The speaker shall be tested with all the foams, attachment films or layers.
The speaker is placed on the lower support of the universal traction machine.
The upper plate of the universal traction machine shall be brought closer to the test speaker
without contact.
Set the zero force setting.
Bring the upper plate of the universal traction machine into contact with the speaker until the
force reaches a value of 0.01kN.
Measure the distance between the two supports.
Set the zero displacement setting.
Start the crush test at a constant speed of 10mm/min. Record force vs distance at a
minimum sampling rate of 10Hz.
The test ends when the force reaches 10kN.
The obtained chart for the speakers shall fall below the line defining the upper corridor limit.

---

1.4.1.1.2. Layer 2: Outer honeycomb block. Pre-crushed around 6mm.
Dimensions:
Diameter:
Tolerance:
Depth:
Tolerance:
40mm (in direction of honeycomb ribbon axis) L- and W-Direction
+0-1mm
6mm (in direction of honeycomb cell axes)
±0.1mm
Material:
Aluminium 3003 (ISO 209, Part 1)
Foil Thickness:
0.076mm ± 15%
Cell Size:
9.5mm ± 20%
Density:
57.7kg/m ± 20%
Crush Strength:
0.827MPa ± 10%
1.4.1.1.3.
Layer 3: Intermediate bonding layer
Dimensions
Diameter:
Tolerance:
Thickness:
40mm
+0-1mm
1mm ± 0.07mm
Material: Aluminium 5251/5052 (ISO 209, Part 1)
1.4.1.1.4. Layer 4: Inner honeycomb block. Pre-crushed around 6mm.
Dimensions:
Diameter:
Tolerance:
Depth:
Tolerance:
40mm (in direction of honeycomb ribbon axis) L-and W-Direction
+0-1mm
3.4mm (in direction of honeycomb cell axes)
±0.1mm
Material:
Aluminium 5056 (ISO 209, Part 1)
Foil Thickness:
0.038mm ± 15%
Cell Size:
3.175mm ± 20%
Density:
97.71kg/m ± 20%
Crush Strength:
3.689MPa ± 10%

---

1.4.1.3. Simulator Performance Check
1.4.1.3.1. To ensure the proper behaviour of the speaker simulator, the TS shall ensure that the
force-deformation curve will lay within the limits stated in Figure 6.
Figure 6
Speaker Simulator Force-deformation Corridor
1.4.1.3.2. If the force-deformation curve of the simulator pass over the upper corridor limit or below the
lower corridor limit by no more than 0.5mm, the simulator is considered to pass.
1.4.1.3.3. For every batch of simulators manufactured, the Technical Service will proceed to check
that the performance of the simulator batch corresponds to the requirements of
Paragraph 1.4.1.3.1. and 1.4.1.3.2. above. The statistical method used for batch acceptance
shall be filed by the TS.
1.4.1.3.4. The testing procedure for the simulator will be the one defined in Annex 20, Part 1,
Paragraph 1.3.1.1.
1.4.1.4. Pre-crush Requirements for Honeycomb Parts
In order to avoid the first deformation peak force which is typical for honeycomb materials, a
pre-crush of Layer 2 and Layer 4 described above will be necessary.
The dimensions laid down in Paragraph 1 above for the honeycomb layers will be after
pre-crush.
For Layer 2, the initial thickness dimension of the honeycomb will be 12mm.
For Layer 4, the initial thickness dimension of the honeycomb will be 9mm.
Pre-crushed side of Layer 2 shall be bonded to Layer 1.
Pre-crushed side of Layer 4 shall be bonded to Layer 3.

---

2.2. Helmet Clamping Free Space Dimensions for Rear Mounting
The helmet shall allow the insertion of metal sheets of 1mm thickness and 55mm height and
56mm width, as one of the possible fixation systems for rear positioning of the accessories,
between the protective padding and the external shell. This requirement is considered to be
met if the protective padding is not bonded to the helmet shell in this part.
2.3. The bonding area, if protective padding clamping space is not provided by the helmet or if it
is offered as alternative by the helmet manufacturer, shall be a continuous surface of
convex curvature without or with a slight curvature radius in which a rectangle of minimum
dimensions of 40mm height by 80mm length can be inserted. This rectangle shall start as
maximum at 15mm height from any point of the lower helmet edge and centred in length
with respect to the corresponding fixture. Within the bonding area, the surface curvature
radius shall not show sharp changes. Within the whole length of the accessory, as foreseen
in the relevant fixtures, the rubber rim geometry with respect to the shell will be such that it
will not prevent any accessory to be fitted. The lower rubber rim or helmet lower design line
shall not show sharp curvature changes within the clamping or bonding area. The lower
rubber rim, if any, will be taken into account when measuring to define the starting height of
the bonding area.
If the helmet shell is designed to not fulfil the bonding surface requirements, adaptors can
be supplied by the helmet manufacturer in order to allow a proper bonding space for the
accessories. In this case, adaptors shall be supplied together with the helmet. Those
adaptors will be considered as helmet shell according to Paragraph 6.19.6.
3. PART 3. ACCESSORIES SIMULATORS FOR THE TESTS FORESEEN IN PARAGRAPH 7.13.
3.1. The shape will be like the correspondent fixture depending on the helmet positioning and
will have the following mass:
(a)
(b)
(c)
Front mounted accessories: 250g
Side mounted accessories: 250g
Rear mounted accessories: 250g
3.2. Clamping/fixing of the simulator to the helmet can be done at the discretion of the Technical
Service with the method noted and filed in the test report. The clamping/fixing system
together with the fixture shall not exceed the maximum accessory weight as stated above.