Regulation No. 22-05

Name:Regulation No. 22-05
Description:Protective Helmets and Visors.
Official Title:Uniform Provisions Concerning the Approval of: Protective Helmets and their Visors for Drivers and Passengers of Motorcycles and Moped.
Country:ECE - United Nations
Date of Issue:1972-06-01
Amendment Level:05 Series, Supplement 2.
Number of Pages:99
Vehicle Types:Component
Subject Categories:Occupant Protection
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Keywords:

helmet, visor, test, approval, paragraph, annex, headform, plane, type, regulation, helmets, system, protective, tests, production, light, visors, impact, surface, figure, force, strap, point, vertical, means, diaphragm, requirements, measured, control, anvil, lower, apparatus, face, retention, angle, part, accordance, number, series, amendments, diameter, size, sample, reference, tested, position, transmittance, cover, shell, method

Text Extract:

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E/ECE/324
) Rev.1/Add.21/Rev.4/Amend.1
E/ECE/TRANS/505 )
August 15, 2012
STATUS OF UNITED NATIONS REGULATION
ECE 22-05
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
PROTECTIVE HELMETS AND THEIR VISORS 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

REGULATION NO. 22
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF PROTECTIVE
HELMETS AND OF THEIR VISORS 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 technical services responsible for conducting approval tests, and of
administrative departments

REGULATION NO. 22
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF PROTECTIVE HELMETS AND OF
THEIR VISORS FOR DRIVERS AND PASSENGERS OF MOTORCYCLES AND MOPEDS
1. SCOPE
This Regulation applies to protective helmets for drivers and passengers of mopeds and of
motorcycles with or without side-car and to the visors fitted to such helmets or intended to
be added to them.
2. DEFINITIONS
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" 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;
2.7.2. "non protective lower face cover" means a detachable or movable part of the helmet
covering the lower part of the face that does not protect the chin of the user against impacts;
2.8. "visor" means a transparent protective screen extending over the eyes and covering all or
part of the face;
2.9. "goggles" mean transparent protectors that enclose the eyes;

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.
3. APPLICATION FOR APPROVAL
3.1. Application for Approval of a Protective Helmet Type
3.1.1. The application for approval of a protective helmet type, without or with one or more visor
types, shall be submitted by the helmet 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:
3.1.1.1. Drawings in triplicate to a scale of 1:1, in sufficient detail to permit identification of the
helmet type, including the methods of assembly. The drawings shall show the position
intended for the approval mark as set out in Paragraph 5.1.4.1.,
3.1.1.2. A brief technical specification stating the materials used and a test report of the photometric
and colorimetric performances of the retro-reflective material.
3.1.1.3. If the helmet is fitted with one or more visors:
3.1.1.3.1. Drawings in triplicate to a scale of 1:1, in 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 5.1.4.1.,
3.1.1.3.2. A technical description of the visor stating the materials used, the manufacturing processes
and, where appropriate, the surface treatment,
3.1.1.4. A number of helmets, with or without visors, out of 20 samples 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.
3.1.1.5. 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.
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 triplicate to a scale of 1:1, in 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,
3.2.1.3. List of approved helmet types to which the visor may be fitted,

5.1.4. In addition to the marks described in Paragraph 4.1.1. above, the following particulars shall
be indicated on every protective helmet conforming to a type approved under this
Regulation by means of the labels referred to in Paragraph 5.1.9. below:
5.1.4.1. An international approval mark consisting of:
5.1.4.1.1. A circle surrounding the Letter 'E' followed by the distinguishing number of the country which
has granted approval,
5.1.4.1.2. The approval number followed by:
5.1.4.1.2.1. a slash and symbol:
"J" if the helmet does not have a lower face cover
"P" if the helmet has a protective lower face cover, or
"NP" if the helmet has a non protective lower face cover.
5.1.4.1.2.2. a dash followed by a production serial number. The production serial numbers shall be
continuous for all protective helmets of the types approved in the same country, and each
authority shall keep a register from which it can check that the type and production serial
numbers correspond.
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,
indelible and resistant to wear.
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:

5.2.3. Notice of approval or of extension or refusal or withdrawal of approval or production
definitely discontinued of a visor type 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 1B to this Regulation.
5.2.4. In addition to the marks prescribed in Paragraph 4.2. above, the following particulars shall
be affixed visibly and in a readily accessible place to every visor conforming to a type
approved under this Regulation:
5.2.4.1. An international approval mark consisting of:
5.2.4.1.1. The approval symbol described in Paragraph 5.1.4.1.1.
5.2.4.1.2. The approval number.
5.2.4.1.3. The symbol denoting daytime use only, if appropriate.
5.2.5. The approval mark shall be clearly legible, indelible and resistant to wear.
5.2.6. The marking shall not be placed within the main visibility area.
5.2.7. Annex 2B to this Regulation gives an example of the arrangement of approval mark for a
visor.
6. GENERAL SPECIFICATIONS
6.1. The basic construction of the helmet shall be in the form of a hard outer shell, containing
additional means of absorbing impact energy, and a retention system.
6.2. The protective helmet may be fitted with ear flaps and a neck curtain. It may also have a
detachable peak, a visor and a lower face cover. If fitted with a non protective lower face
cover the outer surface of the cover shall be marked "Does not protect chin from impacts"
and/or with the symbol shown in Figure 1 below indicating the unsuitability of the lower face
cover to offer any protection against impacts to the chin.
Figure 1
Symbol "Does not Protect Chin from Impacts"
6.3. No component 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.

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 20 mm wide
under a load of 150 N ± 5 N 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.
6.11.4. Chin strap fastening and tensioning devices shall be positioned on the straps either so that
there are no rigid parts extending more than 130 mm vertically below the headform
reference plane with the helmet mounted on the appropriate sized headform, or so that the
whole of the device is between the bony projections of the undersize of the lower jaw.
6.11.5. If the retention system includes either a double-D ring or sliding bar fastening device then
means shall be provided to prevent the retention system being completely undone and also
to retain the free end of the strap when the retention system is adjusted.
6.11.6. Sliding bar and double-D ring fastening devices shall be fitted with a pulling flap to be used
for releasing the retention system. Its colour must be red and its minimum dimensions must
be 10 x 20 mm.
6.11.7. If a retention system includes a quick-release mechanism, then the method of release of this
mechanism shall be self-evident. Any levers, tabs, buttons or other components which need
to be operated to release the mechanism shall be coloured red, those parts of the rest of the
system which are visible when closed shall not be similarly coloured, and the mode of
operation shall be permanently indicated.
6.11.8. The retention system shall remain closed when the tests described in Paragraphs 7.3., 7.6.
and 7.7. are carried out.
6.11.9. The buckle of the retention system shall be designed so as to preclude any possibility of
incorrect manipulation. This means, inter alia, that it must not be possible for the buckle to
be left in a partially closed position.
6.12. The characteristics of the materials used in the manufacture of helmets shall be known not
to undergo appreciable alteration under the influence of ageing, or of the circumstances of
use to which the helmet is normally subjected, such as exposure to sun, extremes of
temperature and rain. For those parts of the helmet coming into contact with the skin, the
materials used shall be known not to undergo appreciable alteration through the effect of
perspiration or of toilet preparations. The manufacturer shall not use materials known to
cause skin troubles. The suitability of a proposed new material shall be established by the
manufacturer.
6.13. After the performance of one of the prescribed tests, the protective helmet shall not exhibit
any breakage or deformation dangerous to the wearer.

(iii)
Fixings and devices to allow the visor to be manoeuvred if they are situated outside of
the field of vision of the visor and if the total surface of these parts, including devices,
if any, to allow the visor to be manoeuvred does not exceed 2 cm , possibly
distributed on each side of the field of vision.
6.15.3.2. The field of vision of the visor is defined by:
(a)
(b)
(c)
A dihedron defined by the reference plane of the headform and a plane forming an
angle of at least 7° upwards, its edge being the straight line L L , with Points L and
L representing the eyes,
Two segments of dihedral angles symmetrical to the median vertical longitudinal
plane of the headform. Each of these dihedral angles is defined by the median
vertical longitudinal plane of the headform and the vertical plane forming with this
plane an angle of 90°, its edge being the straight line LK,
and the lower edge of the visor.
6.15.3.3. To determine the field of vision as defined in Paragraph 6.15.3.2. above, the helmet fitted
with the visor being tested shall be placed on a test headform of suitable size in accordance
with the provisions of Paragraph 7.3.1.3.1., with the helmet tipped towards the rear as
specified in Paragraph 7.3.1.3.1. and the visor placed in the closed position.
6.15.3.4. Visors shall have a luminous transmittance τ ≥ 80%, relative to the standard illuminant
D65. A luminous transmittance 80% > τ ≥ 50%, measured by the method given in
Paragraph 7.8.3.2.1.1., is also permissible if the visor is marked with the symbol shown in
Figure 2 and/or with the English words "DAYTIME USE ONLY". The luminous
transmittance shall be measured before the abrasion test.
Figure 2
Symbol "Daytime Use Only"

6.15.3.8. The table contains the permissible refractive powers at the sight points. The sight points are
located in the reference plane 32 mm to the right and the left of the longitudinal median
plane (see Figure 2B).
Permissible Refractive Power Values for Visors
Spherical effect Astigmatic effect Prismatic effect difference
D + D
| D − D | Horizontal Vertical
2
m
m
Base Out
cm/m
Base In
cm/m
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.
6.15.3.9. Mist retardant visor (Optional requirements)
The internal face of the visor is regarded as having a mist retardant facility if the square of
the specular transmittance has not fallen below 80% of the initial value without misting
within 20 s when tested as described in Annex 16. Such facility may be indicated by the
English words "MIST RETARDANT".
6.16. Conspicuity Marking
6.16.1. General
In order to comply with national requirements for use, the helmet may be required by
individual Contracting Parties to contribute to the conspicuity of the user both during the
daytime and at night:
from the front;
from the rear;
from the right;
from the left
by means of parts made of reflective materials which conform to the specifications laid down
in Paragraphs 6.16.2. to 6.16.6. of this Regulation.
The reflective parts shall not be removable without damage to the helmet.
Note: The mandating of conspicuity marks is left to the discretion of individual Contracting
Parties. Article 3 of the Agreement to which this Regulation is annexed shall not
prevent the Contracting Parties from prohibiting the use of helmets not meeting the
conspicuity requirements.

6.16.4. Photometric Test
The minimum value of the luminous intensity coefficient of a surface area of 18 cm of
material when revolved shall not be less than the values specified in the table below,
expressed in millicandelas per lux.
Angle of Divergence
6.16.5. 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.
6.16.6. Compatibility of Materials
7. TESTS
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.
7.1. Each Helmet Type, fitted with its Visor if Placed on the Market with a Visor, shall be
Conditioned as Shown Below
Test
solvent plus
ambienttemperature
and
hygrometry
conditioning
Number of helmets to be conditioned
solvent plus
heat
conditioning
solvent plus
lowtemperature
conditioning
solvent plus
ultra-violet radiation
conditioning and
moisture
conditioning
Impact absorption 2 1 1 1 5
Rigidity 2 2
Retention system 1 1
Total
The largest size of each helmet type shall be tested for impact absorption and rigidity. For
tests of the retention system, tests, helmet sizes shall be chosen such that the helmet to be
tested shall be that offering the least favourable conditions (such as thickest padding, etc).
Additionally, for each smaller headform size within the size range of the helmet type two
helmets shall undergo the impact absorption test. One helmet shall be heat conditioned,
and the other low temperature conditioned. The conditioned helmets shall be impacted
against either anvil, in equal numbers if possible, at the choice of the laboratory.
8

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 7.3.3.2. When testing impact Points B, X, P and R the helmet is tipped
towards the rear so that the front edge of the helmet in the median plane is displaced by
25 mm; 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.
7.3.1.3.1.1. When testing impact Point S on a helmet with a protective lower face cover, the helmeted
headform is tipped forwards so that the central vertical axis of the headform is inclined at an
angle of 65 ± 3° to the vertical with the vertical longitudinal plane of symmetry of the
helmeted headform in the vertical position. If the impact point would be within 15 mm of the
rim, the helmeted headform shall be re-positioned so that the impact point is not less than
15 mm from the rim.
7.3.1.3.2. The test headform shall be so positioned that the designated point on the helmet is vertically
above the centre of the anvil. The plane tangential to the point of impact shall be
horizontal. This prescription does not apply for the S impact point.
7.3.1.3.3. Helmets placed on the market with a visor shall be tested with the visor in the closed
position.
7.3.1.4. Test
The test shall be completed not more than five minutes after the helmet is taken from the
conditioning chamber. Tests at Point S shall be carried out after tests at Points B, X, P and
R. The drop height shall be equal to:
7.5 (+ 0.15, -0) m/s for both anvils specified in Paragraphs 7.3.2.3.1. and 7.3.2.3.2.
5.5 (+ 0.15, -0.0) m/s for tests at Point S.
7.3.1.5. Measurements
The velocity of the moving mass is measured between 1 cm and 6 cm before impact, to an
accuracy of 1%. The acceleration against time at the centre of gravity of the headform is
measured and recorded and the Head Injury Criterion (HIC) calculated as prescribed in
Paragraph 7.3.2.5.

7.3.2.5. Accelerometer and Measuring Assembly
The accelerometer shall be capable of withstanding a maximum acceleration of 2,000 g
without damage. Its maximum mass shall be 50 grammes. The measuring system,
including the drop assembly, shall have a frequency response in accordance with channel
frequency class (CFC) 1000 of the International Standard ISO "Road vehicles - Techniques
of measurement in impact tests - Instrumentation" (Ref. No. ISO 6487:1980).
The HIC shall be calculated as the maximum (depending from t and t of the equation:


1
HIC = ⎢ a(t) dt⎥
⎢t
− t ∫ ⎥


(t
− t
)
7.3.3. Headforms
where 'a' is the resultant acceleration as a multiple of 'g' and t and t are any two points in
time (sec) during the impact. The acceleration data has to be sampled at a frequency of at
least 8 000 Hz and filtered in accordance with the latest edition of ISO 6487 (CFC 1000).
7.3.3.1. The headforms used for the impact-absorption tests shall be made of a metal of
characteristics such that the headforms present no resonance frequency below 3,000 Hz.
7.3.3.2. The general characteristics of the test headforms to be used shall be as follows:
Symbols Size (in cm) Mass (in kg)
A
E
J
M
O
50
54
57
60
62
3.1 ± 0.10
4.1 ± 0.12
4.7 ± 0.14
5.6 ± 0.16
6.1 ± 0.18
7.3.3.3. The shape of the test headforms shall be:
(a)
(b)
Above the reference plane, in conformity with the detailed dimensions of the
reference headforms shown in Annex 6;
Below the reference plane, in conformity with the detailed dimensions of the test
headforms shown in Annex 7.
7.3.3.4. The centre of gravity of the headform shall be near the Point G on the central vertical axis at
"1" mm below the reference plane, as defined in Annex 7. The headform shall contain, near
its centre of gravity, a housing for a tridirectional accelerometer.
7.3.3.5. For tests other than those of impact-absorption, headforms complying only with the
geometrical provisions of Paragraph 7.3.3.3. above, may be used.

7.4. Test for Projections and Surface Friction
An appropriate size of helmet shall be subjected to the test described in Paragraph 7.4.1. or
to the test described in Paragraph 7.4.2.
7.4.1. Test for Projections and Surface Friction (Method A)
7.4.1.1. Description of Test
7.4.1.1.1. Principle
The rotation-inducing forces caused by projections on the helmet and friction against the
outer surface of the helmet which occur when a helmeted headform is dropped vertically on
to an inclined anvil are measured in the longitudinal axis of the anvil. The peak force and its
integral with respect to time over the duration of the positive impulse are used as
performance criteria.
7.4.1.1.2. Selection and Positioning of the Helmet
7.4.1.1.2.1. An appropriate size helmet shall be selected to fit the headform referred to in
Paragraph 7.4.1.2.6. The horizontal axis of the helmet shall be determined by placing the
helmet on a headform, of a type referred to in Paragraph 7.3.3., according to the
requirements of Annex 5. The helmet shall then be removed from that headform and placed
on a headform of a type referred to in Paragraph 7.4.1.2.6. A load of 50 N is applied to the
crown of the helmet in order to adjust the helmet on the headform such that there is contact
between the crown of the headform and the inner surface of the helmet. The horizontal
plane of the helmet shall then be adjusted to be within 90° ± 5° of the vertical axis of the
headform. 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 much as possible.
7.4.1.1.2.2. The test headform shall be so positioned that the chosen impact point on the helmet is
vertically above the upper part of the face of the anvil.
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
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)
An anvil rigidly fixed to a base;
A free fall guidance system;
A mobile system supporting the helmeted headform;

7.4.1.2.5. Force and Measuring Assembly
7.4.1.2.6. Headform
The force transducers fitted to the anvil shall be capable of withstanding a maximum force
of 20,000 N without damage. The measuring system including the anvil assembly shall
have a frequency response in accordance with channel frequency class (CFC) 1 000 of
the International Standard ISO "Road vehicles - Techniques of measurement in impact
tests - Instrumentation" (Ref. No. ISO 6487:1980).
The headform shall be that referred to in Paragraph 7.3.3. characterised by the Symbol J.
7.4.1.3. Selection of Impact Points
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. Requirements
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 2,500 N, nor shall its
integral with respect to time over the duration of the impact exceed 12.5 Ns for any of the
selected impact points.

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)
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.
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 80 mm ± 1 mm 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 ± 0.1 mm.
For shear assessment the carriage is provided in the middle, with a bar made from a steel
strip of height 6 mm and width 25 mm with its uppermost edges machined to a 1 mm
radius. The bar is case-hardened to a depth of approximately 0.5 mm.
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 60 mm 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.

7.5. Rigidity Tests
7.5.1. The helmet, after undergoing ambient-temperature and hygrometry conditioning, shall be
placed between two parallel plates by means of which a known load can be applied along
the longitudinal axis (line LL in the figure) or the transverse axis (line TT in the
figure). The surface of the plates shall be large enough to contain a circle of at least
65 mm in diameter. An initial load of 30 N shall be applied, at a minimum plates speed of
20 mm/min, and after two minutes the distance between the plates shall be
measured. The load shall then be increased by 100 N, at a minimum plates speed of
20 mm/min, and then wait for two minutes. This procedure shall be repeated until the
application of a load of 630 N.
7.5.2. The load applied to the plates shall then be reduced to 30 N, at a minimum plates speed of
20 mm/min; the distance between the plates shall then be measured.
7.5.3. The helmet used for the test along the longitudinal axis shall be a new helmet, and another
new helmet shall be used for the test along the transverse axis.
7.5.4. In the test along each axis, the deformation measured under the 630 N load shall not
exceed that measured under the initial 30 N load by more than 40 mm.
7.5.5. After restoration of the 30 N load, the deformation measured shall not exceed that
measured under the initial 30 N load by more than 15 mm.
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
15 kg ± 0,5 kg, 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 10 kg ± 0,1 kg shall then be released and shall drop in a guided free
fall from a height of 750 ± 5 mm.

7.8. Visor Tests
7.8.1. Sampling and Use of Samples.
The 7 (+ 3 if optional test) visors are used as follows:
Paragraph Test 1 2 3 4 5 6 7 7 8 9 10 Total
If optional test
6.15.3. Field of vision of
the visor
X
1
6.15.3.4. Luminous
transmittance
6.15.3.5. Light diffusion
6.15.3.6. Recognition of
signal lights
6.15.3.7. Spectral
transmittance
6.15.3.8. Refractive
powers
6.15.3.9. Mist retardant
visor (optional)
7.8.2 Mechanical
characteristics
7.8.3 Optical quality
and scratch
resistance
X X X 3
RETAINED
RETAINED
X X X 3
X X X 3
X X X 3
X X X 3
Note: The test for recognition of signal lights may be dispensed with in the case of visors
with luminous transmittance τ ≥ 80%.
7.8.1.1. Prior to any type of further conditioning for mechanical or optical test, as specified in
Paragraph 7.8.1., each visor shall be subject to the ultraviolet conditioning in accordance
with the provision of Paragraph 7.2.5.1.
7.8.2. Mechanical Characteristics
7.8.2.1. The helmet, fitted with its visor and previously conditioned in accordance with the
provisions of Paragraph 7.2.4., shall be placed in accordance with the provisions of
Paragraph 7.3.1.3.1. on a test headform of suitable size. The test headform selected from
among those shown in Annex 4 shall be so placed that the basic plane is vertical.

7.8.3.2. Requirements
7.8.3.2.1. Three similar test pieces, each from a different visor and taken from the area specified in
Paragraph 6.15.3.2. shall meet the requirements of Paragraphs 7.8.3.2.1.1. and
7.8.3.2.1.2.
7.8.3.2.1.1. In a parallel beam, with the test specimens being irradiated vertically, determine the
spectral transmittance values between 380 nm and 780 nm and then the transmittance
and the visual attenuation quotient in accordance with the equations given in Annex 13.
To calculate the luminous transmittance, the spectral distribution of standard illuminant
D65 and the spectral values of the colorimetric 2° standard observer CIE 1931 according
to ISO/CIE 10526 shall be used. The product of the spectral distribution of standard
illuminant D65 and the spectral values of the colorimetric 2° standard observer CIE 1931
according to ISO/CIE 10526 is given in Annex 14. Linear interpolation of these values for
steps smaller than 10 nm is permissible.
7.8.3.2.1.2. The light diffusion shall not exceed the following values for each method:
Before abrasion
After abrasion
0.65 cd/m /l 5.0 cd/m /l
2.5% 20%
measured according to Annex 11, Method (a);
measured according to Annex 11, Method (b);
measured according to Annex 11, Method (c).
7.9. Micro-slip Test of the Chin Strap (see Annex 8, Figure 4)
7.9.1. 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 20 mm, 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 ± 5 mm at a frequency between
0.5 Hz and 2 Hz.
7.9.2. Take a sample of the strap at least 300 mm 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 ± 1 N. 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.
7.9.3. 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.
7.9.4. The total slippage through the grip shall not exceed 10 mm.

7.11.2. Ease of Release
7.11.2.1. The helmet shall be mounted on the apparatus described in Paragraph 7.6. such that a
static force of 150 ± 5 N is applied to the retention system. An additional static force of
350 ± 5 N shall be applied to the retention system for at least 30 seconds and then
removed. After the additional force has been removed, the opening system shall be
capable of being operated by a force not exceeding 30 N. 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 60 N.
7.11.2.2. 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 ± 0.1 mm. The opening force shall be applied
on the geometric centre of the push button or respective application areas.
7.11.3. Durability of Quick-release Mechanisms
7.11.3.1. Subject the quick-release mechanism to the following procedures in the order given.
7.11.3.2. 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 ± 1 N 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 2 s. Repeat for a total of
5000 cycles.
7.11.3.3. If the quick-release mechanism incorporates metal components carry out the following
procedure.
7.11.3.4. 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 ± 1 h 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 ± 1 h.
Repeat the procedure in Paragraph 7.11.3.2.
7.11.3.5. The quick release mechanism shall not fracture nor disengage when a tensile force of
2.0 kN ± 50 N 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.
8. TEST REPORTS
8.1. Each technical service shall prepare reports on the results of the approval tests and keep
such reports for two 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.

9.2.2.3.1. No Contracting Party applying this Regulation shall apply the criterion
X + 2.4 S shall not exceed L
as contained in Paragraph 9.2.2.3., to the HIC value as measured in accordance with
Paragraph 7.3.
9.3. Production Qualification of the Visors
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) must 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 6.15.3.4.
recognition of light signals
− Paragraph 6.15.3.6.
spectral transmission
− Paragraph 6.15.3.7.
light diffusion
− Paragraph 6.15.3.5.
optical qualities and resistance to scratches
− Paragraph 7.8.3.
Test Group B
refractivity
− Paragraph 6.15.3.8.
mechanical characteristics
− Paragraph 7.8.2.
Test Group C
mist-retardant − Paragraph 6.15.3.9.
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.

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
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.) or following
the method of continuous control (Paragraph 10.5.2.).
10.5.1. Batch Control
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.

10.5.2. Continuous Control
10.5.2.1. The holder of an approval shall be obliged to carry continuous quality control on a
statistical basis and by sampling. In agreement with the relevant authorities, the tests can
be carried out by the technical service or by the holder of an approval.
10.5.2.2. The samples must be taken in accordance with the provisions of Paragraph 10.5.2.4.
10.5.2.3. The helmets size is taken at random and the tests to carry out are described in
Paragraph 10.5.2.4.
10.5.2.4. For the production to be considered conform, the tests of continuous control shall meet the
following requirements.
TESTS TO BE CONDUCTED
Helmets
Taken
0.8% means one helmet
taken from every
125 manufactured
1.5% means one helmet
taken from every
66 manufactured
Shock absorption
kerbstone anvil, heat
(Paragraph 7.3.)
Shock absorption
flat anvil, low
temperature
(Paragraph 7.3.)
Detaching
(Paragraph 7.7.)
Retention system
(Paragraph 7.6.)
Degree of
control rigour
Helmet No. 1 Helmet No. 2 Helmet No. 3* Normal
Helmet No. 1 Helmet No. 2 Helmet No. 3* Strengthened
This dual sampling plan functions as follows:
Normal Control
If the helmet tested is considered to conform, the production conforms.
If the helmet does not meet the requirements, a second helmet shall be taken.
If the second helmet tested is considered to conform, the production conforms.
If both helmets do not meet the requirements, the production does not conform and
helmets which are likely to present the same failure shall be withdrawn.
Strengthened Control
Strengthened control shall replace normal control if, out of 22 helmets tested
consecutively, the production has had to be withdrawn twice.
Normal control is resumed if 40 helmets taken consecutively are considered to conform,
If production subjected to the strengthened control has been withdrawn on two
consecutive occasions, the provisions of Paragraph 12 are applied.
10.5.2.5. The remainder of the tests, not set out in the table above but which have to be conducted
in order to obtain approval, must be conducted at least once per year.

Test Group B
Refractivity
− Paragraph 6.15.3.8.
Mechanical characteristics
− Paragraph 7.8.2.
Test Group C
Mist retardant − Paragraph 6.15.3.9.
This dual sampling plan functions as follows:
For a normal control, if the first sample does not contain any defective units the batch is
accepted without testing a second sample. If it contains two defective units the batch is
rejected.
Finally, if it contains one defective unit a second sample is extracted and it is the
cumulative number which must satisfy the condition of Column 7 of the table above.
There is a change from normal control to strengthened control if, out of 5 consecutive
batches, two are rejected. Normal control is resumed if 5 consecutive batches are
accepted.
If 2 consecutive batches subjected to the strengthened control are rejected, the provisions
of Paragraph 12 are applied.
10.6.1.4. The control of visor conformity is undertaken starting with the batch manufactured after the
first batch which was subjected to production qualification.
10.6.1.5. The test results described in Paragraph 10.6.1.3. must not exceed L, where L is the limit
value prescribed for each approval test.
10.6.2. Continuous Control
10.6.2.1. The holder of an approval shall be obliged to carry continuous quality control on a
statistical basis and by sampling. In agreement with the relevant authorities, the tests can
be carried out by the technical service or by the holder of an approval.
10.6.2.2. The samples must be taken in accordance with the provisions of Paragraph 10.6.2.3.

10.6.2.4. The continuous control of visors is undertaken starting after the production qualification.
10.6.2.5. The test results described in Paragraph 10.6.2.3. must not exceed L, where L is the limit
value prescribed for each approval test.
11. MODIFICATION AND EXTENSION OF APPROVAL OF A HELMET OR A VISOR TYPE
11.1. Every modification of the helmet and/or the visor type shall be notified to the administrative
department which approved the helmet and/or the visor type. The department may then
either:
11.1.1. Consider that the modifications made are unlikely to have an appreciable adverse effect
and that in any case the protective helmet and/or visor still complies with the requirements;
or
11.1.2. Require a further test report from the technical service responsible for conducting the
tests.
11.2. Confirmation or refusal of approval, specifying the alterations shall be communicated by
the procedure specified in Paragraphs 5.1.3. and 5.2.3. above to the Parties to the
Agreement applying this Regulation.
11.3. The competent authority issuing the extension of approval shall assign a series number for
such an extension and 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
or Annex 1B to this Regulation.
12. PENALTIES FOR NON-CONFORMITY OF PRODUCTION
12.1. The approval granted in respect of a helmet or a visor type pursuant to this Regulation
may be withdrawn if the requirements set forth above are not met.
12.2. If a Contracting Party to the Agreement applying this Regulation withdraws an approval it
has previously granted, it shall forthwith so notify the other Contracting Parties applying
this Regulation, by means of a communication form conforming to the model in Annex 1A
or Annex 1B to this Regulation.
13. PRODUCTION DEFINITELY DISCONTINUED
If the holder of the approval completely ceases to manufacture a helmet or a visor type
approved in accordance with this Regulation, he 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 or Annex 1B to this
Regulation.

14.6.4. If appropriate, the following warning shall also be included:
14.6.4.1. The fastening of this visor is such that it will not be possible to remove it instantly from the
line of sight with one hand should an emergency (such as headlamp glare or misting)
occur.
14.6.5. If the visor is MIST RETARDANT approved it may be indicated.
14.6.6. Instructions regarding the detention of obsolescence.
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.
15. TRANSITIONAL PROVISIONS
15.1. Helmets and Visors
15.1.1. As from the official date of entry into force of the 05 series of amendments, no Contracting
Party applying this Regulation shall refuse to grant ECE approval under this Regulation as
amended by the 05 series of amendments.
15.1.2. As from 18 months after the official date of entry into force of the 05 series of
amendments, no Contracting Party applying this Regulation shall grant ECE approvals
and extension unless the helmet or visor type to be approved meets the requirements of
this Regulation as amended by the 05 series of amendments.
15.1.3. As from 30 months after the official date of entry into force of the 05 series of
amendments, all the Contracting Parties applying this Regulation shall prohibit the
application of approval marks on helmets and visors if they refer to type approvals granted
under the preceding series of amendments to this Regulation.
15.1.4. As from 36 months after the official date of entry into force of the 05 series of
amendments, Contracting Parties applying this Regulation may prohibit the sale of
helmets and visors which do not meet the requirements of the 05 series of amendments to
this Regulation.
15.1.5. From the day of entry into force of this Regulation for the United Kingdom,
(a)
(b)
by way of derogation to the obligations of Contracting Parties during the transitional
period set out in Paragraphs 15.1.1. to 15.1.4., and
based on the declaration made by the European Community at the time of its
accession to the 1958 Agreement (Depositary Notification
C.N.60.1998.TREATIES-28),
the United Kingdom may prohibit the placing on the market of helmets and visors which do
not meet the requirements of the 05 series of amendments to this Regulation.

ANNEX 1A
COMMUNICATION
(Maximum format : A4 (210 x 297 mm))
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) pursuant to 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)
10. Type of visor of visors: .............................................................................................................
11. Brief description of visor or visors: ..........................................................................................
12. Submitted for approval on: ......................................................................................................

ANNEX 1B
COMMUNICATION
(Maximum format : A4 (210 x 297 mm))
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 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: .........................................................................................................
8.
Types of helmet to which the visor may be fitted: ...................................................................
9.
Submitted for approval on: ......................................................................................................
10.
Technical service responsible for conducting approval tests: .................................................
11.
Date of report issued by that service: ......................................................................................
12.
Number of report issued by that service: .................................................................................
13.
Remarks: .................................................................................................................................
14.
Approval granted/extended/refused/withdrawn
...................................................................

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
(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 051406/J. The approval number shows that
this approval concerns a helmet which does not have a lower face cover (J) and was granted in
accordance with the requirements of Regulation 22 already incorporating the 05 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.

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 055413. The approval number shows that approval was
granted in accordance with the requirements of the Regulation incorporating the 05 series of
amendments at the time of approval.
Note:
The approval 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 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 4
HEADFORMS
Figure 1B
Rear
Figure 1A
Front
Figure 1
Minimum Extent of Protection
Dimensions in mm
Headforms Size X Y AC HD
A
C
E
G
J
K
M
O
50
52
54
56
57
58
60
62
24
25
26
27
27.5
28
29
30
90
93
96
99
102.5
104
107
110
80
82
84
86
87
88
90
92
88
90
92
94
95
96
98
100

Figure 2b
Peripheral Vision − Vertical Field

Figure 3
Identification of Points of Impact

ANNEX 6
REFERENCE HEADFORMS
(shape, dimensions above reference plane)
Dimensions in millimetres
Dimensions of upper part of headforms
(to be consulted in conjunction with Annex 4, Figure 3)


ANNEX 7
REFERENCE HEADFORMS
(shape, dimensions below reference plane)



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

Figure 2
Dynamic Test of Retention System

Figure 4
Apparatus for Testing Slippage of the Chin Strap

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 3 kg sand
3.
Upper sieve
4.
Lower sieve
5.
Test piece
6.
Test piece holder (turnable)

IB
IB
LB
Iris-diaphragm to adjust diameter of field of observation, diameter 40 mm
Iris-diaphragm to eliminate edge effects from IB
Circular diaphragm, diameter of aperture 1 mm
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:
τ = 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
2. METHOD (b)
2.1. Equipment (See Figure 1)
The beam of a collimator K of semi-divergence γ/2 = 17.4 x 10 rd is limited by a
Diaphragm D with an opening of 12 mm against which the sample holder is placed.
An achromatic convergent Lens L corrected for spherical irregularities links the
Diaphragm D with the receiver R, the diameter of the Lens L being such that it does not
restrict the light diffused by the sample in a cone with a top half angle of β/2 = 14°.
An annular Diaphragm D with extended angles α /2 = 1° and α
focal image plane of the Lens L (see Figure 2).
/2 = 12° is placed in a

Figure 1
Test Equipment
Figure 2
Annular Diaphragm D
3. METHOD (c)
3.1. Equipment
The test arrangement is shown in Figure 3.
Note 1: The measurement principle is identical to the method (a), but the diameter of the
measuring is smaller (approximately 2.5 mm) and the test arrangement is simplified.
The beam of the Laser (L) is expanded using the two Lenses L and L and is directed
towards the measuring point of the ocular (P). Ocular (P) is positioned in such a way what it
can rotate around the axis of the beam.
The deviation of the beam is a function of the prismatic refractive power at the measuring
point.
The annular or circular diaphragm, whichever is chosen, is at a distance of (400 ± 2) mm
from the centre of the ocular. The Lens A then produces the image of the centre of the
ocular on the photoreceptor S.

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 ω
using the following equation:
I
1 φ
= ⋅
ω φ
where φ
is the luminance flux with the visor in the parallel beam and with the annular
Diaphragm B in place
φ
ω
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
Figure 3
Arrangement of Apparatus for measurement of Light Diffusion
Method (c)
L
=
Laser with wavelength of (600 ± 70) nm.
Note: Class 2 laser recommended
< 1mW. Diameter of beam between 0.6 and 1 mm
L = 10 mm nominal focal length lens
L = 30 mm nominal focal length lens

ANNEX 12
TYPE APPROVAL SCHEME (FLOW CHART)

ANNEX 14
PRODUCTS OF THE SPECTRAL DISTRIBUTION OF RADIATION OF THE SIGNAL
LIGHTS AND STANDARD ILLUMINANT D65 AS SPECIFIED IN ISO/CIE 10526 AND
THE SPECTRAL VISIBILITY FUNCTION OF THE AVERAGE HUMAN EYE FOR
DAYLIGHT VISION AS SPECIFIED IN ISO/CIE 10527
Table 14.1
Wavelength
nm
S
(λ) · V(λ) · τ (λ)
red yellow green blue
380 0 0 0 0,0001 0
S
(λ) · V(λ)
390 0 0 0 0,0008 0,0005
400 0 0 0,0014 0,0042 0,0031
410 0 0 0,0047 0,0194 0,0104
420 0 0 0,0171 0,0887 0,0354
430 0 0 0,0569 0,3528 0,0952
440 0 0 0,1284 0,8671 0,2283
450 0 0 0,2522 1,5961 0,4207
460 0 0 0,4852 2,6380 0,6888
470 0 0 0,9021 4,0405 0,9894
480 0 0 1,6718 5,9025 1,5245
490 0 0 2,9976 7,8862 2,1415
500 0 0 5,3553 10,1566 3,3438
510 0 0 9,0832 13,0560 5,1311
520 0 0,1817 13,0180 12,8363 7,0412
530 0 0,9515 14,9085 9,6637 8,7851
540 0 3,2794 14,7624 7,2061 9,4248
550 0 7,5187 12,4687 5,7806 9,7922
560 0 10,7342 9,4061 3,2543 9,4156
570 0 12,0536 6,3281 1,3975 8,6754
580 0,4289 12,2634 3,8967 0,8489 7,8870
590 6,6289 11,6601 2,1640 1,0155 6,3540

ANNEX 15
TEST OF REFRACTIVE POWERS
1. SPHERICAL AND ASTIGMATIC REFRACTIVE POWERS
1.1. Apparatus
1.1.1. Telescope
A telescope with an aperture nominally 20 mm and a magnification between 10 and 30, fitted
with an adjustable eyepiece incorporating a reticular.
1.1.2. Illuminated target
A target, consisting of a black plate incorporating the cut-out pattern shown in Figure 1, behind
which is located a light source of adjustable luminance with a condenser, if necessary, to focus
the magnified image of the light source on the telescope objective.
The large annulus of the target has an outer diameter of 23 ± 0.1 mm with an annular aperture
of 0.6 ± 0.1 mm. The small annulus has an inner diameter of 11.0 ± 0.1 mm with annular
aperture of 0.6 ± 0.1 mm. The central aperture has a diameter of 0.6 ± 0.1 mm. The bars are
nominally 20 mm long and 2 mm wide with a nominal 2 mm separation.
1.1.3. Filter
Figure 1
Telescope Target
A filter with its maximum transmittance in the green part of the spectrum may be used to
reduce chromatic aberrations.
1.1.4. Calibration Lenses
Lenses with positive and negative spherical refractive powers of 0.06 m , 0.12 m and 0.25 m
(tolerance ± 0.01 m ).

These distance in cm are divided by 2 to give the horizontal and vertical prismatic difference in
cm/m.
If the light paths which correspond to the two eye regions cross, the prismatic refractive power
is 'base in' and if the light paths do not cross, it is 'base out'.
Figure 2
Arrangement Apparatus for Measurement of Prismatic Difference
L = light source, for example, small filaments lamp, laser with wavelength of 600 ± 70 nm, etc.
J
=
interface filter, with peak transmittance in the green part of the spectrum (required only if a
filament lamp is used as the light source).
L = achromatic lens focal length between 20 and 50 mm.
LB =
diaphragm, diameter of aperture 1 mm nominal
P = visor
LB =
diaphragm as shown in Detail A
L = achromatic lens, 1,000 nominal focal length and 75 mm nominal diameter
B = image plane

To measure the change in the value of the transmittance τ the sample is placed on the seating
ring and the time determined until the square of τ has dropped to less than 80% of the initial
value of the sample without fogging (time without fogging).
τ
φ b
=
φ u
where:
Фb
is the luminous flux when there is fogging on the sample
Фu
is the luminous flux before fogging
Initial fogging of maximum 0.5 s duration shall not be taken into consideration in the evaluation.
Note 1: Since the light beam passes through the samples twice, this measurement defines
τ .
Note 2: The period until the start of the fogging can usually be determined visually. However,
with some types of coating the formulation of the surface water causes diffusion to
increase more slowly so that visual evaluation is difficult. The detection apparatus
described in Paragraph 1.1. should then be used.
Figure 1
Test Apparatus for Mist-retardant Visor
Protective Helmets and Visors.