EN 1794-2:2024
(Main)Road traffic noise reducing devices - Non-acoustic performance - Part 2: Methods of determination of the general safety and environmental characteristics
Road traffic noise reducing devices - Non-acoustic performance - Part 2: Methods of determination of the general safety and environmental characteristics
This document specifies methods and criteria for assessing the general safety and environmental performance of road traffic noise reducing devices under typical roadside conditions. Appropriate test methods are provided where these are necessary. The treatment of each topic is covered separately in Annexes A to F.
Lärmschutzvorrichtungen an Straßen - Nichtakustische Eigenschaften - Teil 2: Methoden zur Bestimmung der allgemeinen Sicherheits- und Umweltmerkmale
Dieses Dokument legt Verfahren und Kriterien zur Bewertung von Lärmschutzvorrichtungen an Straßen hinsichtlich der Sicherheit und des Umweltschutzes im Allgemeinen unter für den Straßenrand typischen Bedingungen fest. Sofern erforderlich, sind geeignete Prüfverfahren angegeben. Diese Aspekte werden in Anhang A bis Anhang F einzeln behandelt.
Dispositifs de réduction du bruit du trafic routier - Performances non acoustiques - Partie 2 : Méthodes de détermination des caractéristiques générales de sécurité et des caractéristiques environnementales
Le présent document spécifie les méthodes et les critères d’évaluation de la sécurité générale ainsi que des performances relatives à l’environnement des dispositifs de réduction du bruit du trafic routier dans des conditions classiques d’installation en bordure de route. Des méthodes d’essai appropriées sont données chaque fois que cela est nécessaire. Chaque sujet est traité séparément dans les Annexes A à F.
Protihrupne ovire za cestni promet - Neakustične lastnosti - 2. del: Metode ugotavljanja splošnih značilnosti glede varnosti in okolja
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2025
Nadomešča:
SIST EN 1794-2:2020
Protihrupne ovire za cestni promet - Neakustične lastnosti - 2. del: Metode
ugotavljanja splošnih značilnosti glede varnosti in okolja
Road traffic noise reducing devices - Non-acoustic performance - Part 2: Methods of
determination of the general safety and environmental characteristics
Lärmschutzvorrichtungen an Straßen - Nichtakustische Eigenschaften - Teil 2: Methoden
zur Bestimmung der allgemeinen Sicherheits- und Umwelteigenschaften
Dispositifs de réduction du bruit du trafic routier - Performances non acoustiques - Partie
2 : Méthodes de détermination des caractéristiques générales de sécurité et des
caractéristiques environnementales
Ta slovenski standard je istoveten z: EN 1794-2:2024
ICS:
13.020.99 Drugi standardi v zvezi z Other standards related to
varstvom okolja environmental protection
17.140.30 Emisija hrupa transportnih Noise emitted by means of
sredstev transport
93.080.30 Cestna oprema in pomožne Road equipment and
naprave installations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 1794-2
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2024
EUROPÄISCHE NORM
ICS 93.080.30 Supersedes EN 1794-2:2020
English Version
Road traffic noise reducing devices - Non-acoustic
performance - Part 2: Methods of determination of the
general safety and environmental characteristics
Dispositifs de réduction du bruit du trafic routier - Lärmschutzvorrichtungen an Straßen - Nichtakustische
Performances non acoustiques - Partie 2 : Méthodes de Eigenschaften - Teil 2: Methoden zur Bestimmung der
détermination des caractéristiques générales de allgemeinen Sicherheits- und Umweltmerkmale
sécurité et des caractéristiques environnementales
This European Standard was approved by CEN on 12 August 2024.
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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye 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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1794-2:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and symbols . 6
3.1 Terms and definitions . 6
3.2 Symbols . 7
4 Characteristics . 8
4.1 Safety in case of brushwood fire . 8
4.2 Resistance to dynamic loads: risk of falling debris . 8
4.3 Environmental protection . 8
4.4 Access for maintenance and emergency exits . 8
4.5 Light reflection . 8
4.6 Transparency . 8
5 Test report . 8
Annex A (normative) Safety in case of brushwood fire .10
A.1 General .10
A.2 Characteristics .10
A.3 Fire test .10
A.4 Test report .11
Annex B (normative) Resistance to dynamic loads: risk of falling debris .12
B.1 General .12
B.2 Characteristics .12
B.3 Test method .13
Annex C (normative) Environmental protection .16
C.1 General .16
C.2 Characteristics .16
Annex D (normative) Access for maintenance and emergency exits .17
D.1 General .17
D.2 Characteristics .17
Annex E (normative) Light reflection.19
E.1 General .19
E.2 Characteristics .19
E.3 Test method .19
E.4 Test report . 21
Annex F (informative) Transparency . 22
F.1 General . 22
F.2 Definition of transparency . 22
F.3 Static transparency . 23
F.4 Dynamic transparency . 24
F.5 Methodology . 24
F.6 Uncertainty in calculation of effective transparency . 28
Bibliography . 30
European foreword
This document (EN 1794-2:2024) has been prepared by Technical Committee CEN/TC 226 “Road
equipment”, the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2025, and conflicting national standards shall be
withdrawn at the latest by April 2025.
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 EN 1794-2:2020.
— The annexes were renumbered. Annex A now includes the safety in case of brushwood fire.
This document is part of the EN 1794 series, which consists of the following parts under the general title
“Road traffic noise reducing devices — Non-acoustic performance”:
— Part 1: Methods of determination of the mechanical and stability characteristics;
— Part 2: Methods of determination of the general safety and environmental characteristics.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
Introduction
While performing their primary function, road traffic noise reducing devices should not pose hazards to
road users or other people in the vicinity or to the environment at large. Noise reducing devices should
not reflect light in such a way as to prejudice road safety. They should be made from materials which do
not emit noxious fumes or leachates as the result of natural or industrial processes, or as the result of fire.
Noise reducing devices should allow a means of escape by road users and access by operatives in the
event of an emergency or for maintenance.
1 Scope
This document specifies methods and criteria for assessing the general safety and environmental
performance of road traffic noise reducing devices under typical roadside conditions. Appropriate test
methods are provided where these are necessary. The treatment of each topic is covered separately in
Annexes A to F.
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 1794-1:2024, Road traffic noise reducing devices — Non-acoustic performance — Part 1: Mechanical
performance and stability characteristics
EN ISO 2813:2014, Paints and varnishes - Determination of gloss value at 20°, 60° and 85° (ISO 2813:2014)
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1.1
road traffic noise reducing device
RTNRD
device designed to reduce the propagation of traffic noise away from the road environment
Note 1 to entry: RTNRDs can comprise acoustic elements (3.1.2) only, or both structural (3.1.3) and acoustic
elements.
Note 2 to entry: Applications of RTNRDs include noise barriers (3.1.5), claddings (3.1.6), covers (3.1.7) and added
devices (3.1.8).
3.1.2
acoustic element
element whose primary function is to provide the acoustic performance of the device
3.1.3
structural element
element whose primary function is to support or hold in place the parts of the RTNRD
3.1.4
self-supporting acoustic element
acoustic element including its own structural element to support itself
3.1.5
noise barrier
noise-reducing device which obstructs the direct transmission of airborne sound emanating from road
traffic
...
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