FprEN 14388

SLOVENSKI STANDARD
01-februar-2022
Protihrupne ovire za cestni promet - Značilnosti
Road traffic noise reducing devices - Characteristics
Lärmschutzvorrichtungen an Straßen - Merkmale
Dispositifs de réduction du bruit du trafic routier - Caractéristiques
Ta slovenski standard je istoveten z: prEN 14388
ICS:
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.

DRAFT
EUROPEAN STANDARD
prEN 14388
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2021
ICS 93.080.30 Will supersede EN 14388:2015
English Version
Road traffic noise reducing devices - Characteristics
Dispositifs de réduction du bruit du trafic routier - Lärmschutzvorrichtungen an Straßen - Merkmale
Caractéristiques
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, 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, 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: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 14388:2021 E
worldwide for CEN national Members.

prEN 14388:2021 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Characteristics . 6
4.1 Reaction to fire . 6
4.2 Release of dangerous substances . 6
4.3 Resistance to wind loads and loads from passing vehicles . 6
4.4 Resistance to loads under self-weight . 7
4.5 Substitute load due to dynamic actions from snow clearance . 7
4.6 Resistance to dynamic loads from impact of stones . 8
4.7 Resistance to dynamic loads: risk of falling debris . 8
4.8 Safety in collision . 9
4.9 Safety in case of brushwood fire . 9
4.10 Light reflection . 9
4.11 Transparency . 10
4.12 Sound absorption in diffuse sound field conditions . 10
4.13 Sound absorption in direct sound field conditions . 11
4.14 Airborne sound insulation in diffuse sound field conditions . 11
4.15 Airborne sound insulation in direct sound field conditions . 11
4.16 Intrinsic sound diffraction . 11
4.17 Long-term performance . 12
5 Testing and assessment . 13
5.1 Reaction to fire . 13
5.2 Release of dangerous substances . 13
5.3 Resistance to wind loads and loads from passing vehicles . 13
5.4 Resistance to loads under self-weight . 13
5.5 Substitute load due to dynamic actions from snow clearance . 13
5.6 Resistance to dynamic loads from impact of stones . 13
5.7 Resistance to dynamic loads: Risk of falling debris . 13
5.8 Safety in collision . 13
5.9 Safety in case of brushwood fire . 13
5.10 Light reflection . 13
5.11 Transparency . 13
5.12 Sound absorption in diffuse sound field conditions . 14
5.13 Sound absorption in direct sound field conditions . 14
5.14 Airborne sound insulation in diffuse sound field conditions . 14
5.15 Airborne sound insulation in direct sound field conditions . 14
5.16 Intrinsic sound diffraction . 14
5.17 Long-term performance . 14
6 Assessment and verification of constancy of performance - AVCP . 14
6.1 General . 14
6.2 Assessment of performance . 14
6.3 Verification of constancy of performance . 16
7 Product designation . 17
Annex ZA (informative) Relationship of this European Standard with Regulation (EU)
No. 305/2011 . 18

prEN 14388:2021 (E)
European foreword
This document (prEN 14388:2021) 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 14388:2015.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association.
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral
part of this document.
For information, EN 14388:2015 replaced EN 14388:2005 and EN 14388:2005/AC:2008, but it was
not cited in the EU Official Journal (OJEU).
The main changes in comparison with the previous edition include:
— a clarification of the Scope;
— an improved definition of a Road Traffic Noise Reducing Device;
— a revision of all the supporting standards methods according to this revision; and
— this document has been revised to be in line with the Construction Products Regulation.
prEN 14388:2021 (E)
1 Scope
This document specifies product characteristics for road traffic noise reducing devices (RTNRD) - as
defined in 3.1 - to be used alongside roads to reduce the propagation of traffic noise away from the
road environment.
The following types of road traffic noise reducing devices are covered by this document:
— noise barriers (as defined in 3.4);
— claddings (as defined in 3.5);
— covers (as defined in 3.6); and
— added devices (as defined in 3.7).
Road traffic noise reducing devices comprise acoustic elements (as defined in 3.2), structural elements
(as defined in 3.3) or self-supporting elements (having both acoustic and structural functions).
This document identifies assessment and verification of constancy of performance (AVCP) of
characteristics of road traffic noise reducing devices.
This document does not cover the following:
— resistance of RTNRD to vandalism,
— visual appearance of RTNRD, and
— acoustic properties of road pavements.
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 1317-1:2010, Road restraint systems - Part 1: Terminology and general criteria for test methods
EN 1317-2:2010, Road restraint systems - Part 2: Performance classes, impact test acceptance criteria
and test methods for safety barriers including vehicle parapets
prEN 1793-1:2021 , Road traffic noise reducing devices - Test method for determining the acoustic
performance – Part 1: Intrinsic characteristics - Sound absorption under diffuse sound field conditions
prEN 1793-2:2021 , Road traffic noise reducing devices - Test method for determining the acoustic
performance – Part 2: Intrinsic characteristics - Airborne sound insulation under diffuse sound field
conditions
prEN 1793-4:2021 , Road traffic noise reducing devices - Test method for determining the acoustic
performance – Part 4: Intrinsic characteristics - Intrinsic sound diffraction

Under development.
prEN 14388:2021 (E)
prEN 1793-5:2021 , Road traffic noise reducing devices - Test method for determining the acoustic
performance – Part 5: Intrinsic characteristics - Sound absorption under direct sound field conditions
prEN 1793-6:2021 , Road traffic noise reducing devices - Test method for determining the acoustic
performance – Part 6: Intrinsic characteristics - Airborne sound insulation under direct sound field
conditions
prEN 1794-1:2021, Road traffic noise reducing devices - Non-acoustic performance – Part 1: Methods of
determination of the mechanical and stability characteristics
prEN 1794-2:2021, Road traffic noise reducing devices - Non-acoustic performance – Part 2: Methods of
determination of the general safety and environmental characteristics
prEN 14389:2021, Road traffic noise reducing devices - Procedures for determining long-term
performance
EN 13501-1:2018, Fire classification of construction products and building elements - Part 1:
Classification using data from reaction to fire tests
CEN/TS 15447:2006, Mounting and fixing in reaction to fire tests under the Construction Products
Directive
CEN/TS 16637-2:2014, Construction products - Assessment of release of dangerous substances - Part 2:
Horizontal dynamic surface leaching test
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 https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
road traffic noise reducing device
RTNRD
device designed to reduce the propagation of traffic noise away from the road environment
Note 1 to entry: The RTNRD may comprise acoustic elements (3.2) only or both structural (3.3) and acoustic
elements.
Note 2 to entry: Applications of RTNRD include noise barriers (3.4), claddings (3.5), covers (3.6) and added
devices(3.7).
3.2
acoustic element
element whose primary function is to provide the acoustic performance of the device
3.3
structural element
elemen
...