Road restraint systems - Motorcycle road restraint systems which reduce the impact severity of motorcyclist collisions with safety barriers

This document specifies requirements for the impact performance of systems designed for the reduction of impact severity for PTW riders impacting safety barriers whilst sliding along the ground, having fallen from their PTW vehicle. The protection systems concerned are those fitted to barriers or barriers that have an inherent PTW rider protection or risk reduction capability. This document excludes the assessment of the vehicle restraint capabilities of barriers and the risk that they represent to the occupants of impacting cars. The assessment of barrier performance with respect to impacting vehicles is covered by EN 1317-1 and EN 1317-2.
This document defines performance classes taking into account rider speed classes, impact severity and the working width of the system with respect to rider impacts.
For systems designed to be added to a standard barrier, the test results are valid only when the system is fitted to the model of barrier used in the tests since the performance will not necessarily be the same if the system is fitted to a different barrier.

Rückhaltesysteme an Straßen - Rückhaltesysteme für Motorräder, die die Anprallheftigkeit an Schutzplanken für Motorradfahrer reduzieren

Dieses Dokument legt Anforderungen an die Leistungsfähigkeit von Systemen fest, die die Anprallheftigkeit für von ihrem PTW gestürzte, auf dem Boden rutschende Motorradfahrer beim Anprall an eine Schutzeinrichtung reduzieren sollen. Diese Schutzsysteme sind an Schutzeinrichtungen mit oder ohne inhärenten PTW-Fahrerschutz oder Vorrichtungen zur Risikominderung angebracht. Dieses Dokument befasst sich nicht mit der Bewertung der Aufhaltefähigkeit von Schutzeinrichtungen gegenüber Fahrzeugen und der Insassengefährdung für anprallende Pkws. Die Leistungsbewertung von Schutzeinrichtungen in Bezug auf den Anprall von Fahrzeugen ist von EN 1317 1 und EN 1317 2 abgedeckt.
Dieses Dokument legt Leistungsklassen im Hinblick auf einen Fahreranprall fest, wobei Fahrergeschwindig¬keitsklassen, Anprallheftigkeit und der Wirkungsbereich des Systems berücksichtigt werden.
Für Systeme, die zum Nachrüsten von Norm-Schutzeinrichtungen ausgelegt wurden, sind die Prüfergebnisse nur dann gültig, wenn das System an dem gleichen Schutzeinrichtungen-Modell wie in der Prüfung installiert wird, da die Leistungsfähigkeit bei der Installation an einer anderen Schutzeinrichtung nicht notwendiger¬weise gleich bleibt.

Dispositifs de retenue routiers — Dispositifs de retenue routiers pour motos réduisant la sévérité de choc en cas de collision de motocyclistes avec les barrières de sécurité

Le présent document spécifie des exigences pour la performance en cas d’impact des dispositifs conçus pour réduire la sévérité du choc subi par les conducteurs de DRM lorsqu’ils percutent une barrière de sécurité de sécurité en glissant sur le sol après avoir chuté de leur véhicule. Les dispositifs de protection concernés sont ceux qui sont fixés aux barrières de sécurité ou les barrières de sécurité intégrant une protection des conducteurs de DRM ou des capacités de réduction des risques. Le présent document exclut l’évaluation des capacités des barrières de sécurité en matière de retenue des véhicules ainsi que le risque qu’elles représentent pour les occupants des véhicules de tourisme qui les percutent. L’évaluation des performances des barrières de sécurité vis-à-vis des véhicules les percutant est couverte par les normes EN 1317-1 et EN 1317-2.
Le présent document définit les classes de performance en tenant compte des classes de vitesse des motocyclistes, de la sévérité de choc et de la largeur de fonctionnement du dispositif vis-à-vis des chocs subis par les motocyclistes.
En ce qui concerne les dispositifs conçus pour être ajoutés à une barrière de sécurité normalisée, les résultats des essais sont uniquement valables si le dispositif est fixé au modèle de barrière de sécurité utilisé lors des essais, sachant que les performances ne seront pas nécessairement les mêmes si le dispositif est fixé à un modèle de barrière de sécurité différent.

Oprema cest - Oprema cest za ublažitev udarcev motoristov pri trkih v varnostno ograjo

Ta dokument določa zahteve glede odpornosti proti udarcem za sisteme, namenjene ublažitvi udarcev motoristov, ki po padcu z motorja drsijo po tleh in trčijo v varnostno ograjo. Zadevni zaščitni sistemi so sistemi, nameščeni na ograjo, ali ograje, posebej izdelane za zaščito motoristov ali zmanjšanje tveganja pri udarcih. Ta dokument ne vključuje ocene zmožnosti ograj za ublažitev udarca vozila in tveganja za potnike v vozilu ob trku. Ocena odpornosti ograj ob trku z vozili je vključena v standardih EN 1317-1 in EN 1317-2.
Ta dokument določa razrede učinkovitosti, pri čemer se upoštevajo razredi hitrosti voznika, moč udarca in delovna širina sistema glede na udarce voznika.
Kar zadeva sisteme, oblikovane za namestitev na standardno ograjo, so rezultati preskusa veljavni le, kadar je sistem nameščen na model ograje, ki se je uporabil v preskusih. Če je sistem nameščen na drugačno ograjo, učinkovitost ni nujno enaka.

General Information

Status
Published
Public Enquiry End Date
19-Feb-2019
Publication Date
16-Jul-2019
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
10-Jul-2019
Due Date
14-Sep-2019
Completion Date
17-Jul-2019

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SLOVENSKI STANDARD
SIST-TS CEN/TS 17342:2019
01-september-2019
Nadomešča:
SIST-TS CEN/TS 1317-8:2012
Oprema cest - Oprema cest za ublažitev udarcev motoristov pri trkih v varnostno
ograjo

Road restraint systems - Motorcycle road restraint systems which reduce the impact

severity of motorcyclist collisions with safety barriers
Rückhaltesysteme an Straßen - Rückhaltesysteme für Motorräder, die die
Anprallheftigkeit an Schutzplanken für Motorradfahrer reduzieren

Dispositifs de retenue routiers — Dispositifs de retenue routiers pour motos réduisant la

sévérité de choc en cas de collision de motocyclistes avec les barrières de sécurité

Ta slovenski standard je istoveten z: CEN/TS 17342:2019
ICS:
13.200 Preprečevanje nesreč in Accident and disaster control
katastrof
93.080.30 Cestna oprema in pomožne Road equipment and
naprave installations
SIST-TS CEN/TS 17342:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TS CEN/TS 17342:2019
CEN/TS 17342
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
June 2019
TECHNISCHE SPEZIFIKATION
ICS 13.200; 93.080.30 Supersedes CEN/TS 1317-8:2012
English Version
Road restraint systems - Motorcycle road restraint
systems which reduce the impact severity of motorcyclist
collisions with safety barriers

Dispositifs de retenue routiers - Dispositifs de retenue Rückhaltesysteme an Straßen - Rückhaltesysteme für

routiers pour motos réduisant la sévérité de choc en Motorräder, die die Anprallheftigkeit an Schutzplanken

cas de collision de motocyclistes avec les barrières de für Motorradfahrer reduzieren

sécurité

This Technical Specification (CEN/TS) was approved by CEN on 15 April 2019 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to

submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS

available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in

parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 17342:2019 E

worldwide for CEN national Members.
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Contents Page

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 6

3 Terms and definitions ................................................................................................................................... 6

4 Symbols and abbreviations ......................................................................................................................... 7

5 Biomechanical indices for assessing the impact severity of a PTW rider against an

MPS ....................................................................................................................................................................... 8

5.1 General ................................................................................................................................................................ 8

5.2 Index representing the head injury risk: Head injury criterion (HIC36) ................................... 8

5.3 Indices representing neck injury risk ..................................................................................................... 8

6 Test methods .................................................................................................................................................... 9

6.1 General ................................................................................................................................................................ 9

6.2 Test site ............................................................................................................................................................... 9

6.3 Propulsion system ....................................................................................................................................... 10

6.4 ATD and instrumentation ......................................................................................................................... 10

6.5 ATD clothing and equipment ................................................................................................................... 11

6.5.1 Helmet .............................................................................................................................................................. 11

6.5.2 Clothing ............................................................................................................................................................ 11

6.6 ATD mass including equipment .............................................................................................................. 11

6.7 Installation ..................................................................................................................................................... 11

6.8 Impact conditions ........................................................................................................................................ 12

6.9 Launch configurations ................................................................................................................................ 12

6.9.1 General ............................................................................................................................................................. 12

6.9.2 Launch configuration 1: post-centred impact.................................................................................... 13

6.9.3 Launch configuration 2: post offset impact ........................................................................................ 13

6.9.4 Launch configuration 3: mid-span impact .......................................................................................... 14

6.10 Accuracies and deviation of impact speeds and angles .................................................................. 15

6.10.1 ATD impact speed ........................................................................................................................................ 15

6.10.2 ATD approach angle .................................................................................................................................... 15

6.10.3 ATD orientation ............................................................................................................................................ 16

6.10.4 ATD impact point ......................................................................................................................................... 16

6.11 Photographic coverage .............................................................................................................................. 16

7 Performance classes ................................................................................................................................... 17

7.1 General ............................................................................................................................................................. 17

7.2 Speed classes.................................................................................................................................................. 18

7.3 Severity levels................................................................................................................................................ 18

7.4 Deformation of the CMPS ........................................................................................................................... 23

8 Acceptance criteria of the impact test .................................................................................................. 23

8.1 MPS behaviour .............................................................................................................................................. 23

8.2 ATD behaviour .............................................................................................................................................. 23

8.3 Severity indices ............................................................................................................................................. 25

8.4 Vehicle impact performance .................................................................................................................... 25

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9 Test report ...................................................................................................................................................... 25

Annex A (informative) Detailed report template ........................................................................................... 26

Annex B (informative) Anthropomorphic test device .................................................................................. 31

Annex C (informative) Helmet alignment tool ................................................................................................ 33

Annex D (informative) Modification of the anthropomorphic test device shoulder ......................... 35

Annex E (informative) Reference helmet .......................................................................................................... 43

Annex F (informative) Helmet calibration procedure ................................................................................. 44

F.1 General ............................................................................................................................................................. 44

F.2 Helmet description....................................................................................................................................... 44

F.3 Procedure description and layout .......................................................................................................... 44

F.4 Helmet assessment ...................................................................................................................................... 45

Bibliography ................................................................................................................................................................. 47

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European foreword

This document (CEN/TS 17342:2019) has been prepared by Technical Committee CEN/TC 226 “Road

equipment”, the secretariat of which is held by AFNOR.

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

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes CEN/TS 1317-8:2012.

The significant technical changes incorporated in this revision are updates of the European foreword, the

Scope and Subclause 6.2, Test site.

CEN/TS 1317-8 needed to be brought into line with EN 1317 in development (merging of

EN 1317-1:2010, EN 1317-2:2010, EN 1317-3:2010, EN 1317-5, EN 1317-7 and additional test methods

for removable barrier sections).

According to the CEN/CENELEC Internal Regulations, the national standards organisations of the

following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
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Introduction

In order to improve safety, the design of roads may require the installation of road restraint systems,

which are intended to contain and redirect errant vehicles safely for the benefit of the occupants and

other road users, or pedestrian parapets designed to restrain and to guide pedestrians and other road

users not using vehicles, on sections of road and at particular locations defined by the national or local

authorities.

EN 1317-2 contains performance classes, impact test acceptance criteria and test methods for barriers.

Whereas EN 1317-2 covers the performance of these systems with respect to cars and heavy vehicles,

this document addresses the safety of the riders of powered two-wheeled vehicles impacting the barrier

having fallen from their vehicle.

As powered two-wheeler riders may impact a barrier directly (in which case no protection is offered by

the vehicle), special attention is given to these vulnerable road-users. In order to minimize the

consequences to a rider of such an impact, it may be necessary to fit a barrier with a specific PTW rider

protection system. Alternatively, a barrier might specifically incorporate characteristics limiting the

consequences of a PTW rider impact.

Rider protection systems may be continuous (including barriers specifically designed with the safety of

PTW riders in mind) or discontinuous. A discontinuous system is one which offers rider protection in

specific localized areas of a barrier judged to be of higher risk. The most common example of a

discontinuous system is one fitted locally to the posts of a post and rail type guardrail - adding nothing

between the posts.

The purpose of this document is to define the terminology specific to it, to describe procedures for the

initial type-testing of rider protection systems and to provide performance classes and acceptance

criteria for them.

Accident statistics from several European countries have shown that riders are injured when impacting

barriers either whilst still on their vehicles or having fallen and then sliding along the road surface. Whilst

different statistical sources show one or the other of these configurations to be predominant, all known

studies show both to constitute a major proportion of rider to barrier impact accidents. Some studies

showing the sliding configuration to be predominant have led to the development and use of test

procedures in some European countries, evaluating systems with respect to the sliding configuration. At

the time of writing, a number of such protection systems were already on the European market. It is for

this reason that it was decided to address the issue of sliding riders initially, in order to bring about the

adoption of a European Standard in as timely a manner as possible. However, the rider on vehicle

configuration should also be considered as soon as possible as a subsequent addition.

This document will be read in conjunction with EN 1317-1 and EN 1317-2.
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1 Scope

This document specifies requirements for the impact performance of systems designed for the reduction

of impact severity for PTW riders impacting safety barriers whilst sliding along the ground, having fallen

from their PTW vehicle. The protection systems concerned are those fitted to barriers or barriers that

have an inherent PTW rider protection or risk reduction capability. This document excludes the

assessment of the vehicle restraint capabilities of barriers and the risk that they represent to the

occupants of impacting cars. The assessment of barrier performance with respect to impacting vehicles

is covered by EN 1317-1 and EN 1317-2.

This document defines performance classes taking into account rider speed classes, impact severity and

the working width of the system with respect to rider impacts.

For systems designed to be added to a standard barrier, the test results are valid only when the system

is fitted to the model of barrier used in the tests since the performance will not necessarily be the same if

the system is fitted to a different barrier.
2 Normative references

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

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

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

EN 1317-2 , Road restraint systems – Part 2: Performance classes, impact test acceptance criteria and test

methods for safety barriers including vehicle parapets

EN 1621-1, Motorcyclists' protective clothing against mechanical impact – Part 1: Motorcyclists' limb joint

impact protectors – Requirements and test methods

ISO 6487, Road vehicles – Measurement techniques in impact tests – Instrumentation

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

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

• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
biomechanical indices

indices obtained from the registers measured in the ATD, which are used to evaluate the severity of the

impact
3.2
clothing
see 6.5.2
Under revision.
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3.3
continuous motorcyclist protection system

MPS placed continuously along a barrier with the purpose of retaining and redirecting an impacting rider,

usually preventing direct impact with aggressive elements of the barrier such as posts, anchorages or

module connections, and that also prevents a sliding rider from passing between the posts of a barrier

and coming into contact with any potential hazard that may be behind the barrier
3.4
discontinuous motorcyclist protection system

MPS placed locally around a potentially aggressive element of a barrier, such as a post, anchorage or

module connection, with the purpose of reducing the severity of a direct impact of the rider against it

Note 1 to entry: This type of system is not intended to contain fallen PTW riders since the system is not present

continuously along the length of the barrier.
3.5
dummy working width

distance between the foremost part of the un-deformed system and the maximum dynamic lateral

position of any part of the system or ATD
Note 1 to entry: See 7.4.
3.6
impact severity
risk level of physical injury to a rider resulting from an impact
3.7
integrated motorcyclist protection system

motorcyclist protection system, either continuous or discontinuous, which forms an integral part of a

barrier design rather than being a separate add-on fitted to an existing barrier
3.8
helmet
see 6.5.1
3.9
motorcyclist
rider of any powered two-wheeler
3.10
motorcyclist protection system

device installed on a barrier or in its immediate surroundings, the purpose of which is to reduce the

severity of a PTW rider impact against the barrier
4 Symbols and abbreviations
For the purposes of this document, the following abbreviations apply.
CMPS Continuous Motorcyclist Protection System
DMPS Discontinuous Motorcyclist Protection System
MPS Motorcyclist Protection System
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PTW Powered Two-Wheeler
W Dummy working width
5 Biomechanical indices for assessing the impact severity of a PTW rider against
an MPS
5.1 General

In order to assess the severity and define the acceptance criteria, the following biomechanical indices

shall be used.
The sign convention shown in Figure 1 shall be adopted.
5.2 Index representing the head injury risk: Head injury criterion (HIC36)

The Head Injury Criterion (HIC36) is an acceleration-based criterion defined by Formula (1):

25,
t 2
 
(1)
HIC max × a× dt× t− t
2 1
tt−
2 1
t 1
where

a is the resultant acceleration at the centre of gravity of the head expressed as units of gravity

(1 g = 9,81 m/s )
22 2
(2)
a aa++ a
x yz
a is the acceleration X-axis;
a is the acceleration Y-axis;
a is the acceleration Z-axis.

The (HIC36) values for calculation intervals (t2 – t1) greater than 36 are not taken into account for the

calculation of maximum values, i.e. (t2 – t1) ≤ 36 ms.
5.3 Indices representing neck injury risk
The indices representing neck injury risk are:
— anterior-posterior shear force (F ),
— lateral shear force (F ),
— tension-compression force (F ),
— lateral bending moment calculated about the occipital condyle (Moc ),
— flexion/extension moment calculated about the occipital condyle (Moc ),
— torsion moment (M ).
According to SAE J1733.
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The above indices shall be determined using the “upper neck load cell”.

The moments about the occipital condyles Moc and Moc are calculated from the moments M and M

x y x y

expressed in Nm and the forces F and F expressed in N according to the expressions:

x y
Moc = M + F × D (3)
x x y
Moc = M - F × D (4)
y y x
where
M is the lateral bending moment on the neck;
My is the flexion/extension moment on the neck;

D is the distance for the transfer to the occipital condyle of the moments of bending measured.

It shall adopt the specific value mentioned in 6.4.

The types of movement resulting in positive values of neck forces and moments are:

— +F : head backwards, chest forward (forward-backward shear),
— +F : head upwards, chest downward (traction),
— +M : left ear towards left shoulder (lateral bending),
— +M : chin towards sternum (flexion).
Figure 1 — Sign convention for accelerations, forces and moments in the ATD
6 Test methods
6.1 General

The full-scale impact test consists of launching an ATD at a given speed against a barrier with MPS (or

integrated system), in a suitable test area. At the moment of impact, the ATD is sliding with its back and

legs stably in contact with the ground.
6.2 Test site

The test area, including all areas over which the ATD is displaced during the test and the ground under

any part of the test installation, shall be generally flat with a gradient not exceeding 2,5 %. The test area

shall be clear of dust, debris, standing water, ice and snow at the time of the test in the entire area over

which the ATD is displaced during the test. No part of the test item shall be in contact with any ice or

snow that could modify the deformation or performance of the test item during the test.

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The test zone shall have a level hardened paved surface in the area on which the ATD is launched and

along the traffic side of the test installation over an area sufficient to incorporate the entire ATD trajectory

of the test. The test zone shall incorporate a smooth area along the approach path of the ATD to facilitate

sliding of the ATD before impact.

A dimensioned sketch plan(s) of the test area shall be included in the test report which shall show the

testing area including the test installation (including barrier), position of all cameras, path of the ATD,

impact point and the dimensioned locations for all test item parts exceeding 2,0 kg that broke away

during the test.

The dimensions of the edge detail shall be sufficient to demonstrate the actual performance of the vehicle

and the tested system on the edge of a bridge, or structure.

The test shall demonstrate the minimum width of structure behind the traffic face of the vehicle parapet

that is required to safely contain a PTW rider.

Appropriate measures shall be taken in order to minimize dust generation from the test area and the test

vehicle during the impact test so that photographic records will not be obscured.

Appropriate measures shall be taken to ensure that in the exit area, and during the impact, the ATD does

not make contact with any independent obstruction which could have an effect on the ATD interaction

with the test item or the ATD trajectory.
6.3 Propulsion system

The ATD shall not be restrained, other than by the friction of the paved surface, guided or propelled by

any force external to it at the point of impact.
6.4 ATD and instrumentation

The ATD used for the tests shall be a modified Hybrid III 50th percentile male ATD as described and

according to the conditions of use given in Annex B.

All necessary measurements to evaluate the biomechanical indices shall be carried out with

measurement systems compliant with ISO 6487.

The resultant acceleration measured at the centre of gravity of the ATD’s head shall be calculated from

the tri-axial components of the acceleration recorded with Channel Frequency Class 1 000 (CFC 1 000)

and a Channel Amplitude Class of 500 g (CAC 500 g).

The neck forces and moments shall be measured by a six-channel upper neck load cell specifically

designed to be fitted to the Hybrid III ATD. These forces and moments shall be recorded as follows:

— F and F with a CAC of 8 kN and a CFC of 1 000,
x y
— F with a CAC of 13 kN and a CFC of 1 000;
— M , M and M with a CAC of 280 N m and a CFC of 600.
x y z

For the transfer of moments measured by the neck load cell to the occipital condyle, both the forces and

moments shall have a CFC of 600.

For the distance D, the value of 0,017 78 m shall be adopted for those load cells installed in the existing

space at the base of the skull and 0,008 763 m for those load cells mounted on the lower surface of the

base of the skull.

An event indicator shall be used to signal the moment of first ATD contact with the test item. However,

the method used shall not modify the ATD to test item contact (e.g. the use of a tape switch on the helmet

is not acceptable).
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6.5 ATD clothing and equipment
6.5.1 Helmet

The ATD shall be equipped with an integral type, production motorcycle helmet weighing

1,300 kg ± 0,050 kg and with a polycarbonate shell. A reference helmet model is given in Annex E. The

helmet shall meet the specifications given in Annex F. Annex E gives alternative helmet models that have

been found to meet the requirements in Annex F.

NOTE In all cases, the helmet used will comply with the requirements set out in Regulation 22 of

ECE/TRANS/505.

The surface of the helmet in contact with the test item shall be smooth, and free from protruding parts,

vents, roughness or any other kind of unevenness, so that the contact conditions between the helmet and

the test item are not influenced by any such feature.

The helmet shall be new for each test. No alteration of the original production helmet shall be undertaken.

No stickers, paint or any other item or substance shall be applied to the helmet in any area of its surface

which will be in contact with the test item.

The helmet shall be fitted onto the head of the ATD in accordance with Annex C. If helmet models other

than those given in Annex E are used, the size shall be chosen in order to ensure that the fit of the helmet

on the ATD head is as snug as possible, with the helmet held firmly onto the head.

Care should be taken to choose a helmet that will leave visible traces on the test item during contact,

i.e. helmet with paint of a colour which contrasts with the test item colour.
6.5.2 Clothing

The ATD shall be dressed in a long-sleeved cotton t-shirt to be worn under a leather, one-piece motorcycle

suit (or two-piece suit if the two pieces are joined together) conforming to EN 1621-1, leather gloves, and

leather boots. The leather suit shall not be fitted with any additional protection devices (e.g. back

support
...

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