oSIST prEN 12767:2013
(Main)Passive safety of support structures for road equipment - Requirements and test methods
Passive safety of support structures for road equipment - Requirements and test methods
This European Standard specifies performance test procedures to determine levels of passive safety intended to reduce the severity of injury to vehicle occupants of a small car in an impact with permanent support structures of road equipment. Test methods for determining the level of performance under various conditions of impact are given.
Passive Sicherheit von Tragkonstruktionen für die Straßenausstattung - Anforderungen und Prüfverfahren
Diese Europäische Norm legt Verfahren zur Bestimmung der Leistung fest und definiert Leistungsklassen hinsichtlich der passiven Sicherheit, mit dem Ziel, den Grad der Verletzungen, die Fahrzeuginsassen beim Anprall an eine dauerhafte Tragkonstruktion für die Straßenausstattung erleiden können, zu vermindern. Prüfverfahren zur Bestimmung der Leistungsklassen unter verschiedenen Anprallbedingungen sind angegeben.
Sécurité passive des structures supports d'équipements de la route - Prescriptions, classification et méthodes d'essai
La présente Norme européenne définit les procédures d'essai de résistance en vue de déterminer les niveaux de sécurité passive nécessaires pour réduire la gravité des blessures subies par les passagers d'un véhicule léger en cas d'impact avec les structures de support fixes des équipements routiers. La méthodologie de définition des niveaux de performance sous diverses conditions de choc est communiquée.
Pasivna varnost nosilnih konstrukcij za opremo cest - Zahteve in preskusne metode
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 12767:2013
01-november-2013
Pasivna varnost nosilnih konstrukcij za opremo cest - Zahteve in preskusne
metode
Passive safety of support structures for road equipment - Requirements and test
methods
Passive Sicherheit von Tragkonstruktionen für die Straßenausstattung - Anforderungen
und Prüfverfahren
Ta slovenski standard je istoveten z: prEN 12767
ICS:
93.080.30 Cestna oprema in pomožne Road equipment and
naprave installations
oSIST prEN 12767:2013 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 12767:2013
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oSIST prEN 12767:2013
EUROPEAN STANDARD
DRAFT
prEN 12767
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2013
ICS 93.080.30 Will supersede EN 12767:2007
English Version
Passive safety of support structures for road equipment -
Requirements and test methods
Passive Sicherheit von Tragkonstruktionen für die
Straßenausstattung - Anforderungen und Prüfverfahren
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 226.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12767:2013: E
worldwide for CEN national Members.
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Contents
Page
Foreword .4
Introduction .5
1 Scope .6
2 Normative references .6
3 Terms and definitions .6
4 Abbreviations .8
5 Official language .9
6 General test parameters .9
6.1 Test site .9
6.2 Backfill . 10
6.2.1 Backfill type S, D and X . 10
6.2.2 Backfill type P . 10
6.3 Test vehicle . 11
6.3.1 Test vehicle instrumentation . 11
7 General test item parameters . 12
7.1 General test item documentation . 12
7.2 Test item selection. 12
7.2.1 Lighting column . 12
7.2.2 Sign support . 13
7.2.3 Signal support . 13
7.2.4 Utility pole . 13
7.2.5 Other support structures . 13
7.2.6 Multi-legged supports . 13
8 Test method . 14
8.1 General . 14
8.2 Impact angle . 14
8.3 Impact point . 14
8.3.1 Theoretical alignment point for single legged support structures . 14
8.3.2 Theoretical alignment point for multilegged support structures . 15
8.4 Impact speed . 19
8.5 Simplified test method for unharmful support structures. 19
9 Impact data measurement and Evaluation . 20
9.1 General . 20
9.2 Test item behaviour . 20
9.3 Vehicle behaviour . 23
9.4 Impact severity indexes . 23
9.5 Impact data to be recorded . 24
9.6 Photographic coverage . 25
10 Test report . 25
10.1 General . 25
10.2 Test data decimal rounding . 26
Annex A (normative) Data evaluation . 27
A.1 Performance classes . 27
A.2 Evaluation of speedclass . 27
A.3 Evaluation of energy absorbing categories . 28
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A.4 Evaluation of occupant safety level . 28
A.5 Evaluation of collapse mode behaviour . 29
A.6 Evaluation of the direction class . 29
A.7 Additional information . 30
Annex B (normative) Range of versions . 31
B.1 General . 31
B.2 Lighting column . 31
B.2.1 Definition of range of versions . 31
B.2.2 Evaluation of the performance within a range of versions . 32
B.3 Sign support . 33
B.3.1 Definition of range of versions . 33
B.3.2 Evaluation of the performance of sign support within a range of versions . 33
B.4 Signal support . 34
B.5 Utility poles . 34
B.6 Other support structures . 34
B.7 Multi-legged supports . 34
Annex C (normative) Changed versions . 35
C.1 Changed version . 35
C.1.1 Risk evaluation . 36
C.2 Deemed to comply . 36
C.2.1 Lighting column . 36
C.2.2 Sign support . 36
C.2.3 Signal support . 36
Annex D (normative) Vehicle data . 37
D.1 Vehicle dimensions . 37
Annex E (normative) Vehicle calibration . 39
E.1 Vehicle calibration test . 39
Annex F (normative) Backfill requirements . 41
F.1 Backfill dimension and support structure positioning for S, X and D backfill types . 41
F.2 Compaction of the backfill soil . 41
F.3 Pull/Push test . 42
F.4 Standard soil, type S . 42
F.5 Fine soil, type D . 43
Annex G (informative) Test report . 46
G.1 General . 46
Annex H (informative) Standard metal tubes structures . 49
H.1 General . 49
Annex I (informative) Bogie vehicle . 50
I.1 General . 50
Bibliography . 51
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Foreword
This document (prEN 12767:2013) has been prepared by Technical Committee CEN/TC 226 “Road
equipment”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12767:2007.
Annexes A, B, C, D, E, F, G, H, I, J, L, N and O of this European standard are normative, Annex K, M, P and
Q is informative.
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Introduction
This European Standard provides a common basis for the vehicle impact testing of items of road equipment
support. This European Standard defines the testing process and the data to be recorded, and how this is to
be reported. Acceptance criteria are to be found in corresponding parts of EN 40 and EN 12899. The previous
version of EN 12767 did include acceptance criteria – this is now, for convenience, repeated in informative
Annex A.
All erected support structures will, for a certain level of kinetic energy during impact, collapse and fall down,
posing an injury risk for road users.
The severity of accidents for the occupant(s) of a vehicle is affected by the performance of the support
structures for items of road equipment under impact. Based on safety considerations, support structures can
be manufactured to behave in controlled manners to reduce the overall risk. This European standard defines
methods of determining impact safety performance and also defines how the determined data resulting from
the impact tests can be presented by classes of convenience.
Support structures are classified in different categories, i.e. energy absorbing categories, collapse modes and
directional classes.
This European standard considers three categories of passive safety support structures: high energy
absorbing (HE), low energy absorbing (LE) and non-energy absorbing (NE).
Energy absorbing support structures slow the vehicle considerably and thus the risk of secondary accidents
with structures, trees, pedestrians and other road users may be reduced. Non-energy absorbing support
structures permit the vehicle to continue after the impact with the support structure with a limited reduction of
speed. Non-energy absorbing support structures may provide a lower primary injury risk than energy
absorbing support structures.
This European standard defines four mechanism of collapse for support structures, i.e. yielding, frangible,
shearing or foundation lift.
Within the energy absorbing categories three types of directional classes are defined: single-directional,
bi-directional and multi-directional. Performances of single directional supports are ensured only when
impacted by a preferable direction equivalent to a vehicle leaving the road with an angle of 20°.
1)
All of the impact tests use a light vehicle in order to verify that satisfactory attainment of the impact severity
levels is compatible with the safety for the occupants of light vehicles.
Based on the evaluation of the performance of each tested support structure, National and Local road
authorities will be able to specify the performance level of an item of road equipment support structure in
terms of the effect on occupants of a vehicle in impact with the structure.
1) 900 kg.
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1 Scope
This European Standard specifies performance test procedures to determine levels of passive safety intended
to reduce the severity of injury to vehicle occupants of a small car in an impact with permanent support
structures of road equipment. Test methods for determining the level of performance under various conditions
of impact are given.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 933-1, Tests for geometrical properties of aggregates — Part 1: Determination of particle size
distribution — Sieving method
EN 933-2, Tests for geometrical properties of aggregates — Part 2: Determination of particle size
distribution — Test sieves, nominal size of apertures
EN 1317-1, Road restraint systems — Part 1: Terminology and general criteria for test methods
ISO 6487, Road vehicles — Measurement techniques in impact tests — Instrumentation
ISO 10392, Road vehicles with two axles — Determination of centre of gravity
3 Terms and definitions
For the purposes of this European Standard, the following terms and definitions apply.
3.1
impact test
test in which a test vehicle impacts a test item of road equipment support structure
3.2
impact angle
angle between the intended direction of traffic and the approach path of the test vehicle into the test item
3.3
vehicle impact point
initial point of impact on the test vehicle
3.4
test item impact point
initial point of impact on the test item
3.5
impact speed, v
i
Measured impact speed of the impacting vehicle, measured along the test vehicle approach path at a distance
no further than 6 meters before the impact point
3.6
exit speed, v
e
speed of the test vehicle after the impact with the test item, measured perpendicular to the extended approach
path at a point 12 metres beyond the impact point
Note 1 to entry: For unharmful products as defined in Clause 4.17, this definition is replaced by Clause 8.5.
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3.7
test vehicle
commercially available production model passenger car used in an impact test to evaluate the performance of
a test item
3.8
test item
complete system of a support structure including the road equipment to be supported and foundation (if
needed)
3.9
support structure
system used to support items of road equipment
Note 1 to entry: Items of equipment may include luminaires, traffic signs, traffic signals, telephones and utility cables.
The system includes posts, poles, structural elements, foundations, detachable mechanisms, if used, and any other
components used to support the particular item of equipment.
3.10
sign support
support intended to hold one or more signs, consisting of one or more parts: a post, possibly an extension
piece and, if necessary, a bracket
3.11
lighting column
support intended to hold one or more luminaires, consisting of one or more parts: a post, possibly an
extension piece and, if necessary, a bracket
3.12
utility pole
structure used to support power transmission, telecommunication cables or similar
3.13
cantilever support
support system with a single post and a cantilever arm supporting signs, signals or other equipment
3.15
gantry support
support system spanning a carriageway with one or more legs on each side of carriageway supporting signs,
signals or other equipment
3.16
multi-legged support
support structures with several legs. These legs can be the same, or different. The term includes structures
with legs aligned transverse to the road or along the road.
3.17
unharmful support structure
unharmful support structures are small support structures (for example some types of bollards, self-restoring
signs, delineators) that cause only minor damage and a small change of speed during impact
3.18
ASI
dimension less impact severity index calculated from the tri-axial vehicle accelerations according to the
procedure given by EN 1317-1
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3.19
THIV
velocity, expressed in km/h, at which a hypothetical "point mass" occupant impacts the surface of a
hypothetical occupant compartment and calculated in accordance with the procedure given by EN 1317-1
3.20
ballast
mass added to a test vehicle, excluding instrumentation, to simulate cargo and/or to achieve desired test
mass
3.21
total mass
mass that includes all items in the test vehicle at the beginning of the test
3.22
collapse mode
the mode by which the support structure deforms under vehicle impact
3.23
yielding mode
support structure deforms under vehicle impact
3.24
shearing mode
support structure is transversally detached from foundation at a dedicated point or mechanism
3.25
frangible mode
support structure is totally detached by crush or fracture of the support structure
3.26
foundation lift
soil yields instead of the support structure
3.27
anthropomorphic test device
th
anthropomorphic device representative of a 50 percentile adult male, specifically designed to represent in
form, size and mass, a vehicle occupant, and to reproduce the dynamic behaviour of an occupant in crash
testing
4 Abbreviations
ASI Acceleration Severity Index
ATD Anthropomorphic Test Device (Dummy)
THIV Theoretical Head Impact Velocity
Y Yielding type collapse mode
F Frangible type collapse mode
S Shearing type collapse mode
Z Lift foundation collapse mode
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type S Backfill type S, standard soil
type D Backfill type D, fine soil
type X Backfill type X, special soil
type P Backfill type P, paved
SD Single directional
BD Bidirectional
MD Multidirectional
C Circumscribed circle for supports theoretical alignment point
O Centre of the circumscribed circle for supports theoretical alignment point
L Clear opening for multi-legged supports
V Velocity
T Time
5 Official language
This European Standard official language is English. Other EN 12767 translations shall be seen as
interpretations of this English text, and for any uncertainties of the use of or deviations in understanding the
procedures, the preferential rights of interpretation is this English version.
6 General test parameters
6.1 Test site
The test site shall be generally flat with a gradient not exceeding 2,5 %, and shall be clear of standing water,
ice or snow at the time of the test. The test site shall be of sufficient size to enable the test vehicle to be
accelerated up to the required speed and controlled so that its approach to the test object is stable.
The test vehicle shall run on a level hardened or paved surface until the vehicle first impacts the support
structure under test. Furthermore to enable the test vehicle exit characteristics to be evaluated, the hardened
level surface shall extend not less than 15 m beyond the impact point.
NOTE 1 “paved” can be interpreted both as a surface that has asphalt, bricks or concrete on top, or as well compacted
soil or gravel surface made hard enough to drive on. For the purposes of this standard, the term “paved” is used only for
an installation with asphalt, brick slabs/pavers or a concrete surface.
The paved area of the test site shall never impede or interfere with the test item behaviour/deformation under
impact.
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.
The tests in this standard shall be carried out with the test item installed in ground or placed on a levelled
surface at the same level as the adjoining carriageway.
NOTE 2 The performance of some support structures may be sensitive to differences in ground level between the
position of the support structure and the carriageway if the designated mechanism is at a specific height.
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6.2 Backfill
The manufacturer shall select the type(s) of backfill to be used in the Type Tests from those given in Table 1.
Table 1 — Backfill type
Backfill type Name
S Standard soil
D Fine soil
X Special
P Paved
NOTE Standard soil is recommended when testing new support structures.
The backfill at the test site shall be well known, repeatable and described thoroughly, either in the test report
or as a reference to well-known and widely accepted geotechnical references.
The same backfill type shall be used for low speed(s) and high speed(s) test on the same product/product
family.
The different backfill types are described in clause 6.2.1, 6.2.2 and 6.2.3.
6.2.1 Backfill type S, D and X
Backfill type S, D and X identify the use of soil material in the backfill volume.
Backfill type S grading shall be in accordance with Clause F.4. Backfill type D grading shall be in accordance
with Clause F.5. Backfill type X shall be described by a sieving curve supplied by the manufacturer and
included in the test report (grading shall be in accordance with EN 933-1 and EN 933-2.).
The backfill type S, D and X shall be characterized by a push/pull test according to Clause F.3.
The minimum dimensions of the backfill volume, the positioning of the item in the volume and the compaction
of the backfill material shall comply with Clause F.1 and F.2. The backfill volume shall not be frozen at the
time of test and shall be protected from rain before the impact test.
Backfill type S, D and X shall not be paved with the exemption of the path of the vehicle wheel tracks.
The lateral movement at the exit side of the test item at the ground level shall be measured to an accuracy of
0,02 m after the impact, and then reported.
NOTE This reported value is used in Annex A for the classification.
6.2.2 Backfill type P
Backfill type P identifies the use of a flat continuous rigid surface (such as asphalt and/or concrete) of a
sufficient thickness to provide the anchoring of the tested item
...
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