Informal document GRSP-69-19

(69th GRSP, 17 - 21 May 2021, agenda item 9)

Submitted by the Chair of hoc group of interested expert

PROPOSAL OF SUPPLEMENT TO THE 06

SERIES OF AMENDMENT OF REGULATION
NO. 22 (PROTECTIVE HELMETS)

ACCESSORIES (INTERCOM SYSTEM)

HOW the series 06 of amendments is born ….
TOR - OBJECTIVE OF THE WORKING GROUP

The objective of the IWG is to develop additional safety provisions that were either not ready for adoption
of UN Regulation No. 22 and/or required additional research. The IWG will also update/clarify existing
requirements and test procedures in UN Regulation No. 22 based on new data and on-road experience.

Scope of work for IWG shall include the following items. Should additional items be proposed, the IWG
will decide by consensus on their inclusion

A. New test and criteria following the progress in research for head protection improvement (e.g.:
Rotational Acceleration Protection);

B. Requirements for new features to take into account:

1. Lightening equipment;
2. Cameras
3. Audio-phone equipment
4. Design equipment
5. Aeration (to improve helmet wearing)

C. New Type Approval Marking System (to prevent counterfeit and backup enforcement and police
control)
Status Report *
. In December 2017 GRSP agreed on the need to update UN Regulation No. 22

. In March 2018 WP.29 gave a general support to establish the IWG on Protective Helmets

- Geneva, 14th May 2018 – 1st IWG-PH to draft Term of Reference

- Geneva, 10th December 2018 – 2nd IWG-PH to discuss the first proposal

- Milan, 25th & 26th March 2019 – 3rd IWG-PH to draft & endorse the proposal to be
submitted to GRSP on its 65th session

- Geneva, 13th May 2019 – 4th IWG-PH to prepare the presentation for GRSP

- Milan, 5th & 6th September 2019 – 5th IWG-PH to draft & endorse the proposal to
be submitted to GRSP on its 66th session

- Geneva, 9th December 2019 – 6th IWG-PH to prepare the presentation for GRSP

* Meetings data, reports and all documents were available in the IWG web site (https://wiki.unece.org/pages/viewpage.action?pageId=60361119)
A brief history of the REGULATION ….
The ECE / UN Regulation 22 is constantly evolving and has undergone numerous changes following the
introduction of amendments 03, 04, 05 and 06 with the aim of having products that are increasingly safer and
aligned with the latest results of continuous research.

ECE Regulation 22/02 (1982)

ECE Regulation 22/03 (1988)

- No changes regarding the general requirements and shock absorption tests.
- Introduction of the 5 ° limit referring to the maximum opening angle of the visor.
- Introduction of the roll-off test. (Max rotation 30 °)

Suppl. 1 ECE 22/03 (1991)

- Introduction of the prescriptions and tests on the optical and mechanical qualities of the visors

ECE Regulation 22/04 (1995)

- Introduces the requirements of the Highlighting Bands (Optional - required in France)
- It introduces specific tests and additional checks on the buckles and the retention system
- New procedure and limits for shock absorption tests.
ECE Regulation 22/05 (2000)
- It introduces a specific test to check the shock absorption capacity of the chin guard (point S).
- It introduces a verification of the sliding friction coefficient and a specific assessment of the roughness or
the different profiles of the shell
- Possibility of homologation of visors with transmittance up to 50% and introduction of specific
instrumental tests for the evaluation of refractive powers, transmittance and diffusion of light, color
interference and resistance to fogging of the visors.

ECE Regulation 22/06 (2020)

- Introduction of a new headform

- Modular helmets, new procedure and double code
- Rotational acceleration tests, new procedure
- High and low energy linear impact
- Integration of the std impact points, testing extra points
- Visors - Adapting minimum light transmittance values (EN1938)
- Mechanical tests visor, high-speed particles test
- Photochromic visors
- Sun shield, characteristics and marking
- Accessories integrated to the helmets
- New procedure for production qualification tests
Many and important innovations have been introduced to offer to the users an increased
safe and performing helmet.
What has NEVER changed on helmets approval Regulation ……

ECE R22.03 (1988) ECE R22.04 (1995) ECE R22.05 (2000)

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.

and in ECE 22.06

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.

7.3.1.3.5. Helmets placed on the market with accessories shall be examined to assess that the
supplementary equipment has no adverse effect and that in any case the protective helmet
and/or visor still complies with all the requirements.

Note: The evaluation shall be done with and without the accessory and their support with
particular attention, as example, to energy absorption, sharp edges and field of vision.
No helmet shall be modified from its original specification as manufactured. Accessories must be
fitted in accordance with the helmet manufacturer’s instructions. Only accessories tested
during the type approval procedure of the helmet keep the type approval valid.(*)

(*) Only the underlined sentence is under discussion.

Communication System - Technical performance consequences ……. related to Regulation ECE 22
7.4 Test for projections and surface
7.3. Linear Impact friction
Energy absorption tests X point
Other aspect
7.3. Linear Impact
Energy absorption tests S point Installation, partial disassembly of helmet
if not predisposed.
General Installation made by the final user

Helmet mass and distribution / inertia for

rotational

7.13. Oblique impact test method of

measuring rotational acceleration

All the prescriptions in the paragraphs

7.3, 7.4 and 7.13 are verified in type
approval process, the modification have
affect on the performance of the helmet
PHASE 1

ON A INTEGRATED SOLUTION ALL THIS

ASPECT ARE VERIFIED AND CHECKED
DURING A TYPE APPROVAL PROCESS

On helmets with and without accessories,

independently of the type of the accessories.
Considerations …. for phase 2

The helmet is the main safety and head protection element of the motorcycle driver and accessories can
contribute but the helmet performs its main function even without accessories and for this reason the
legislation is constantly evolving.

As declared by the accessories Manufacturers (Doc GRSP-67-09), the market of “unverified”

accessories has generated "Annual revenue turnover estimated at 150 millions of Euros“ without any
safety check and homologation costs in accordance with the Regulations 22.

In the same document They complain that "Our industry will be at the mercy of helmet manufacturers'
willingness to incorporate (or not) communication products depending purely on their commercial
interests“.

To tackle this problem, a new type approval and test procedure for accessory – so called PHASE 2 - in
addition to the current procedure is needed.

In PHASE 1 the accessories are within the homologation of the helmet, the helmets are verified in terms
of safety with and without accessories, and above all that the Helmet Manufacturer, IN THIS CASE, is
also liable in civil and criminal matters for any non-compliance of the helmet itself.
In document GRSP-67-09, the proposal of the Accessory Manufacturer Consortium is described:

"Redefine the regulation text to overcome the trade barrier and to allow a safe way for the
motorcycle rider to communicate while riding

- Particular tests for accessories

- Particular tests for "helmets ready for accessories"
- Set compatibility conditions to make sure the rider safety is ensured "

In document GRSP 68-15 the Accessory Manufacturer Consortium proposes:

“ - Work with the IWG on defining an agreed test procedure for approving communication
accessories.

- Approval of the communication accessories independently and separately from the

helmet test procedure. "

The above inputs are take in count by the work done in the ad-hoc group of interested experts
established by GRSP during its sixty-eighth session.
Result of the work done by the Ad-Hoc Group, in which they participated representatives, delegates
and technicians from France, Belgium, Germany, Israel, Italy, Korea, Nederland, Spain, Sweden, USA
as well as Clepa and Accessory Industry.

Agreement has been reached on the text and contents of the documents that will be presented at the
next GRSP as a working document refer to a “Proposal for supplement to the series 06 of amendments
to UN regulation No. 22”:

ECE/TRANS/WP.29/GRSP/2021/13
Submitted by the experts from Italy, France, Germany, Netherlands and Spain

and

ECE/TRANS/WP.29/GRSP/2021/15
Submitted by the experts from Italy and Spain
 PHASE 2 ‘’READY FOR’’ The concept …. (open to accessories approval) (*)

Helmets Manufacturer Accessories Manufacturer

Helmet Helmet Helmet Intercom Intercom Intercom

Not Ready Original Equip. ‘’Ready for’’ ‘’Ready for’’ Original to HM After Market

SIMULATOR

Type Approval Type Approval

Helmet Intercom
‘’Ready for’’ ‘’Ready for’’
Same as 22.05

MARKET
ADVANTAGES …..

For HELMETS Manufacturer:

The possibility of approving and placing on the market both version of helmets, with dedicated systems and designed
to host “UNIVERSAL” intercom.

Maintaining control on particular products which, due to size or shape, may not meet the requirements if equipped
with devices, and maintaining the possibility to approve them without declaring any compatibility.

Use only the SIMULATOR to check compatibility with multiple intercom devices, reduction of tests and type approval
samples

For ACCESSORIES (as. Intercom) Manufacturer:

The possibility of separated homologation and sales “UNIVERSAL” (Ready for ..) systems that can be installed on all
helmets designed to host “UNIVERSAL" intercoms.

The use of the ONLY proof of compliance with SIMULATOR for type approval will grant the compatibility of the
intercom system with multiple helmet models, test reduction and type approval samples. One time cost approval (*)

The possibility to continue to sell unapproved "Ready for" devices in a similar way to what has been done up to now.

(*) As considered in Informal document GRSP 67-09.

For USER:

The opportunity to choose if buying:

A an helmet with original intercom kit

B an helmet approved as “ready for” and then to combine any intercom device which has been approved as
”UNIVERSAL” and with the evidence that both product are tested and safe.

C an helmet and then to combine any intercom device not “ready for” as in the habit of ECE22/05

Note:

ONLY A and B solutions are checked to “ …. 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” (according § 6.3).
Only A and B shall grant the conformity of the helmet to the type approved.

With C solution, any other modification which has not been verified in order to grant the absence
of adverse SHALL NOT complies with the requirements of this Regulation.
About document ECE/TRANS/WP.29/GRSP/2021/15, developed on the basis of the
document submitted by the Consortium of Accessory Manufacturers to Ad Hoc
group, for to complete the document more test and information are collected, so that
paragraphs and values that remain suspended in the overall text are taken into consideration
to prepare the informal document GRSP-69-XX.

In order to identify the procedure and the most significant values to be considered in the
document, various checks and tests were carried out.

Severe tests show that NOT all the helmets can host in safer way, for dimensional an
constructive reasons, a communication system. The same system installed on
different helmets can produce different results, in some cases also negative.

To better assess the correctness of these values, we checked the spaces and
solutions currently available on the main helmets present on the market and ready for
22.06 approval including the possibility to install communication system.

The most significative results are show and resumed as follow:

OPEN POINT …….

6.3.1.1. If an accessory has any component to be installed on the exterior of the helmet shell
within any of the impact areas foreseen in this Regulation and those parts of the
accessory have a thickness of more than [3] mm, the accessory shall be tested together
with the helmet and the accessory becomes Specific accessory.

6.3.1.2. The helmet shall have some markings on the exterior of the helmet shell or any visible
component to take them as a reference for the installation of the universal accessories
main external components.

The area where to fit the universal accessories shall grant 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).

Proposal: to remove the square brackets the values are acceptable

Speakers and microphone pocket space:

6.3.1.5. If the helmet is prepared to fit speakers, the helmet shall have a dedicated space in the inner EPS
of at least [41] mm diameter and a depth of at least [8] mm and be tested as well according to the tests
foreseen in point 7.3. in the X point with the speakers simulators defined in Annex 20. In this case, the helmet
will be marked as “S”.

All the data reported for this scope have been collected from helmet, parts, drawings and information
provided by the manufacturers, directly or through the Technical Services in charge of the respective
approvals, authorized by them.
 Speaker Micr.
Diameter Depth Diameter Depth
The data expressed in summary form relate to
mm mm mm mm
products of the following brands:
45/70 12,5 4,3
AGV AIROH ARAI 45 7,5
CABERG GIVI HJC 55x51 7 24 6
J-TECH LS2 NOLAN 45 6 33x14 8
SCHUBERT SHARK SHOEI 42 10
40 9
The helmets that we have taken into consideration to evaluate the size of the 42 9
pockets are limited to those already tested ready to be ECE 22.06 approved, 42 10
some of them have already been approved even with a specific 41 8
communication system installed. 44 5
36/40 7/9
The same dimensions can cover more models of the same brand. 45 6,5
40 8 22 5
Only the really available space is considered for the scope. 50 10
39x42 8
43 6
Proposal: To remove the brackets and modify as “ …… 40 9
dedicated pocket inside the helmet with dimension of at least 62x43 10
40 mm diameter and a depth of at least 7 mm … “of minimum 46 8/10
45
depth .
50 5,37
Rotational test on the helmets with one simulator in different position:

ROTATIONAL Impact Standard

HIC BrIC PLA (g) PRA (Rad/sec2) Weight Helmet 1480 gr
Front-lateral right 45° 793,00 0,317 130,76 2052 Weight Simulator/each 250 gr
Rear 180° 522,20 0,388 98,35 2716
Lateral left 270° 879,50 0,220 150,28 1846
Simulator in Lateral (1480+250= 1730 gr) Variaz. %
HIC BrIC PLA (g) PRA (Rad/sec2)
Front-lateral right 45° 898,90 0,322 146,39 1957 13,35 1,58 11,95 -4,63
Rear 180° 773,60 0,383 132,32 3392 48,14 -1,29 34,54 24,89
Lateral left 270° 973,80 0,193 156,37 1899 10,72 -12,27 4,05 2,87
Simulator in Front-Lateral (1480+250= 1730 gr)
HIC BrIC PLA (g) PRA (Rad/sec2)
Front-lateral right 45° 798,00 0,337 137,66 1974 0,63 6,31 5,28 -3,80
Rear 180° 737,20 0,389 132,31 3406 41,17 0,26 34,53 25,41
Lateral left 270° 1061,30 0,217 167,00 1774 20,67 -1,36 11,13 -3,90
Simulator in Rear (1480+250= 1730 gr)
HIC BrIC PLA (g) PRA (Rad/sec2)
Front-lateral right 45° 1031,00 0,300 152,32 1931 30,01 -5,36 16,49 -5,90
Rear 180° 455,70 0,409 109,68 3084 -12,73 5,41 11,52 13,55
Lateral left 270° 990,50 0,284 176,43 2570 12,62 29,09 17,40 39,22
Rotational test, comparison with one and two simulator in different position:

ROTATIONAL Impact Standard

HIC BrIC PLA (g) PRA (Rad/sec2)
Front-lateral right 45° 793,00 0,317 130,76 2052
Rear 180° 522,20 0,388 98,35 2716
Lateral left 270° 879,50 0,220 150,28 1846
Simulator in Rear (1480+250= 1730 gr)
HIC BrIC PLA (g) PRA (Rad/sec2)
Front-lateral right 45° 1031,00 0,300 152,32 1931 30,01 -5,36 16,49 -5,90
Rear 180° 455,70 0,409 109,68 3084 -12,73 5,41 11,52 13,55
Lateral left 270° 990,50 0,284 176,43 2570 12,62 29,09 17,40 39,22
Simulator in Rear and Side (1480+500= 1980 gr)
HIC BrIC PLA (g) PRA (Rad/sec2)
Front-lateral right 45° 854,00 0,319 121,88 2541 7,69 0,63 -6,79 23,83
Rear 180° 454,00 0,322 101,97 2603 -13,06 -17,01 3,68 -4,16
Lateral left 270° 1063,10 0,239 157,40 1924 20,88 8,64 4,74 4,23

Several tests with double mass applied in different positions were carried out, the one considered most significant was reported to
illustrate the results which in any case show values that remain within the limits set by the Regulations.

Even if for the outcome of the test the influence is minimal, we should consider, taking in consideration the observation rotational
test behavior, if is the case to limit the maximum allowed weight of the accessories installed on the helmet to max 400 gr

Proposal: Limit the weight of the single accessory to 200 gr, so even if we consider the
combination of several functions we could reduce the total weight added to the
helmet in 400 gr.
LINEAR Impact WO Speakers With Speakers
Point X cond./anvil HIC g HIC g
XL/61 -20° Flat 1854 223 1905 242
XL/61 +50° kerb 969 153 1061 176 Linear impact on helmets, test without and with speakers:
M/58 -20° Flat 2282 265 2045 249
M/58 +50° kerb 1576 211 1422 200
LOW ENERGY Speed 6m/s Limit ECE 22.06 Limit ECE 22.06
Point X cond./anvil HIC g HIC g
on helmet ECE 22.05 1300 180 1300 180
XL/61 -20° Flat 1733 224 2212 257
XL/61 +50° kerb 1692 237 1492 223 Point X cond./anvil HIC g HIC g
N Ambient / Flat 1153 192 1319 196
Point X cond./anvil HIC g HIC g N ECE 22.06 version Ambient / Flat 958 166 1135 176
XXL 62/63 -20° Flat 882 136 1366 192
XXL 62/63 +50° kerb 1176 173 1140 111
SC Ambient / Flat 934 165 1335 201
M 56/57 -20° Flat 1552 198 1657 218
M 56/57 +50° kerb 1370 184 1750 98

Point X cond./anvil HIC g HIC g

Comparison test with speakers vs simulator:
XL/62 -20° Flat 1894 233 2097 251
XL/62 +50° kerb 784 129 876 153
LINEAR Impact WO Speakers With Speakers With 8 mm Sym.
MS/57 -20° Flat 1833 227 1959 243
MS/57 +50° kerb 1176 164 1076 167 Point X cond./anvil HIC g HIC g HIC g
1 L/60 Left Amb. / kerb 1045 147 1093 156 1109 155
Point X cond./anvil HIC g HIC g
1 L/60 Right Amb. / Flat 1862 228 1778 225 1856 233
XXL/63 -20° Flat 1453 182 1629 193
XXL/63 +50° kerb 932 125 950 130
2 XL/60 Left
L 58/59 -20° Flat 1751 210 1826 211 (Modular) Amb. / kerb 1112 160 1134 160 1157 178
L 58/59 +50° kerb 913 131 1047 146 2 XL/60 Right
(Modular) Amb. / Flat 1798 219 1882 221 1594 203
Point X cond./anvil HIC g HIC g
MS 57/58 -20° Flat 1367 180 1659 195
MS 57/58 +50° kerb 1067 139 976 128
S 55/56 -20° Flat 1499 185 1542 189 Are shown values obtained on suitably prepared ECE
S 55/56 +50° kerb 960 145 1101 135 22.06 helmets and with the simulacrum of 8 mm thick to
Point X cond./anvil HIC g HIC g align with the values measured in the compression of the
XXXL/65 -20° Flat 1929 240 1473 200 speakers
XXXL/65 +50° kerb 1245 191 2284 258
L/60 -20° Flat 1815 227 1569 230
L/60 +50° kerb 1333 196 2252 251
M/58 -20° Flat 1913 249 2335 256
M/58 +50° kerb 1376 190 1801 229
6.19.8. When the accessories to be fitted have any component, different from speakers or,
microphone or clamping, to be installed on the interior of the helmet shell, the component
shall fulfil the following requirements:

6.19.8.1. The material has to be flexible and of a maximum thickness of [2] mm or

Proposal: to remove the square brackets the values is acceptable

7.13.4. Helmets marked as “UA” must be tested as well with each of the accessory simulators
and/or a combination of them, the total weight of the accessories with which the helmet will
be tested will not exceed [500gr]. The tests done will be specified in the test report. The
accessories simulators are defined in Annex 20, Part 3.

Proposal: To remove the brackets and limit to 400 gr.

ANNEX 8 - Figure 1d
Example of a helmet SIMULATOR for accessories projections and surface friction (method B)
The idea: The object:

Other polycarbonate layers of different thicknesses can be superimposed on the base frame to achieve the desired
stiffness. The outer layers can be easily replaced in case of damage in the surface friction test.
 Mechanical Validation:

Helmet simulacrum

Rigidity load/deformation

Load Deformation (mm)

(Kgf) Simulator Simulator Helmet
3 mm (3+3) 6 mm Rim
10 7 3,4 3,4
12,5 10 4,6 4,5
20 16,2 7,2 6,8
27 20 9,8 9
35 // 12,7 11,5
40 // 14,2 13,4

The simulacrum has about the same longitudinal and transverse

stiffness of a helmet, the stiffness represents a compromise as it
would be anyway because it is impossible to have an exact value
that can represent full/modular and jet helmets in the same way or
in composite or plastic material.
Comparison Test:

The effective load applied on the device is in

both cases checked directly on the device
itself, independently from the support.
Double Check, all Accessories Systems were tested first on the helmet and then on the
simulacrum with similar results

Test of projection and surface

Brand Model
Adesive Clip Abrasive
A Pass Pass
1
B Pass Pass Pass
A Pass
B Pass Pass
2 C Pass Pass
D Pass Pass Pass
E Pass Pass Pass
A Pass Pass Pass
3
7.4.2.1.3.1. Test of projection B Pass Pass Pass
The headform is adjusted in order to have the chosen projection on the A - Pass
carriage so that the shear edge is positioned 50 mm from the projection 4
and makes lateral contact with the projection after the drop weight is
B - Pass Pass
released from its upper position.
7.4.2.1.3.2. Test of outer surface

The abrasive paper is mounted on the carriage in the position specified in paragraph 7.4.2.2.2.
The chosen outer surface of the helmet is lowered on to the abrading carriage at the centre of
the flat surface without abrasive paper. A loading mass is applied in accordance with paragraph
7.4.2.2.8. The drop weight is released from its upper position in accordance with paragraph
7.4.2.2.5. The abrasive paper shall be changed after every test.
ANNEX 20
Part 1. Accessories assessment

1. Measurement of the maximum dimensions of externally fitted accessories:

For the measurement of the dimensions, only the accessory plus the support, if any, have to be measured. If the device is
fitted with a foldable antenna, the system must fit in the fixture with the antenna in 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.

1.1 For front mounted accessories:

Accessories must fit in the following fixtures dimensions: (See different figure for different position)

Accessories must fit in the following fixtures dimensions

It is hard to define agreed fixture

Proposal : Maintain the measurements of the simulacrum as proposed in the document

prepared by the Consortium of Accessory Manufacturers. Some products currently on the
market do not meet these requirements but with larger dimensions they would occupy
the test area on the helmet.
2. Maximum dimensions of speakers and microphones:

Speaker Micr. Boom Total A screening of the dimensions of the

Brand Model Diameter Depth Diameter H or L Diameter weight main and most popular systems
mm mm mm mm mm gr available was carried out on
A 36 8 13 27 4 80
1
B 40 10 16,5 27 4 130 AGV; CARDO; INTERPHONE by
A 30 7 14 10 4 113 CELLULAR LINE; MIDLAND; NOLAN
B 30 7 14 10 4 87 N-COM;SENA
C 30 7 14 10 4 103
2
D 30 7 14 10 4 125 * NOT possible include on simulator
E 30 7 14 10 4 102 (24) proposed in annex 20 part 1.
F 40 8 14 10 4 110 (24)
A 40 10 10,5 x 7,5 28,3 5 150
3 B 40 10 10,5 x 7,5 28,3 5 120
S1 46,2 (42,2x6,5) 10
A* 40 7 13x8 34 4,5 173
B* 40 7 - - - 182
4
S1 40 6,5
S2 40 10
5 A 40 9,5 15 10 5 108 (40)
6 A 40 10 11 28 5 130 (45)
7 A 40 7 86 (40)
2.1 Speakers
The speakers must be contained in a cylinder of [40] mm diameter and [14] mm thick.

Proposal: Remove the brackets to 40 diameter and limit to 12 mm the thick without comfort cover
and to add the note: Speakers with diameter up to 45 mm shall be approved, as options, in order
to be installed only on helmets specially approved up to this dimension.
There are also solutions on the market with speakers of larger diameter, perhaps it is appropriate to provide for the
possibility of approving also these devices as well, which can only be housed on helmets that will have an
adequate pocket. This combination will be listed in the user manual.

2.2 Microphone
The microphone must be contained in a parallelepiped of the following dimensions:
Lenght: 35 mm
Width: 18 mm
Height (dimension from the chin protective padding towards the headform): 11,5 mm

The boom, if any, must be flexible and not have an external diameter of more than [10] mm

Proposal: Remove the brackets and limit to 8 mm the diameter of the boom.
3. Mechanical characterization of the speakers:
Testing procedure to be drafted. Limits to be set.
The obtained chart for the speakers must fall below the line defining the upper corridor limit

Mechanical characterization: have been carried out compression tests on the available speakers, with the dynamometer,
to check the force vs displacement curves and see to what minimum thickness they are reduced in order to consider
them rigid. On base of this data also define in detail the thickness of the speakers simulator. The thickness currently in
brackets is parameterized to the available heights of the pockets, so be able to consider the possibility that even the EPS
works, in any case, a little before having the simulator directly in contact with the headform.

Note: The graphs show the trend of the curve

from the beginning of compression of the rigid
part, the compression of any protective padding
does not generate force.
 Proposal:

Procedure:

Compression test load/displacement at

5 mm/min up to 1kN.

Criteria:

The height of the speaker when subjected

to compression with a load of 1kN must
be less than or equal to 8 mm.

Note:
The graphs show the decreasing of thickness due the
compression load
Rationale to choose for compression test of the speaker 1000N to be sure the residual
thickness is below 8mm.

1. Speaker simulator (rigid) to make impact test is 8 mm thick;

2. Actual speaker when compressed to 8mm due to a potential impact shall not induce
damage to the user. this means AIS0.

Limit to AIS 0 according CEN technical report CEN/TR 16148:2011 (Head and neck
impact, burn and noise injury criteria. A Guide for CEN helmet standards committees)
will imply a max peak impact to 50g

Quasi static test method  typically between same events in quasi static and impulse
there is a difference factor of X3 in the acceleration results.

Limit in acceleration in quasi static = 50/3=16g - F=ma ==> 6,2 x 16 x 9,8 = 972N
4. Speakers and microphone simulators for helmet testing

4.1 Speakers simulator

The speaker simulator will be made from rigid plastic and will have a dimension of [40+0-1]mm
diameter and [5] mm thick

Material characteristics to be defined

Proposal: Remove the brackets and limit to 8 mm (Value from compression test) mm the
thick. Material characteristics, if rigid, have only influence on simulator.

Insert for the helmet Manufacturer the possibility to allow the installation of speakers up to
45 mm with specific tests and instructions.
4.2 Microphone simulator

The microphone simulator will be made from rigid plastic and will have a
parallelepiped shape with the following dimensions:

Lenght: [35] mm (horizontal transversal dimension)

Width: [18] mm (vertical dimension)
Height: [11,5] mm (horizontal longitudinal dimension)

Material characteristics to be defined

Proposal: Remove the brackets and to introduce as alternative a cylinder of 10 mm diameter and
11 mm height. Material characteristics have no influence.

Insert the possibility only for full face integral helmet to use a specific simulator in line with the
dedicated microphone available.
Part 3. Accessories simulators for the tests foreseen in 7.13

The shape will be like the correspondent fixture depending on the helmet positioning and
will have the following mass:

(a) Front mounted accessories: [250 g]

(b) Side mounted accessories: [250 g]
(c) Rear mounted accessories: [250 g]

Proposal: To remove the brackets and limit to 200 gr.

AFTER ADDITIONAL TEST AND INFORMATION COLLECTED - THE PROPOSAL

ECE/TRANS/WP:29/GRSP/2121/15 AS AMENDED BY INFORMAL DOCUMENT

GRSP-69-XX IS COSIDERED READY TO BE PRESENTED TO GRSP BY:

• ITALY
Last but not least ….

The time to implement this supplement is really important in order to reduce the
number of helmets and accessories that could already be compliant the new
supplement of R22.06 but that could already be sold as approved in the period
up to the entering into force of the supplement.

There would in any case be an important number of helmets and accessories not
marked "Ready for …" which, although identical to those approved after the
supplement, would immediately become obsolete at the entering into force of the
supplement.
Thanks for your attention ..