FprEN 14388 rev

SLOVENSKI STANDARD
01-september-2010
Protihrupne ovire za cestni promet - Specifikacije
Road traffic noise reducing devices - Specifications
Lärmschutzeinrichtungen an Straßen - Vorschriften
Dispositifs de réduction du bruit du trafic routier - Spécifications
Ta slovenski standard je istoveten z: prEN 14388
ICS:
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.

EUROPEAN STANDARD
DRAFT
prEN 14388
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2010
ICS 93.080.30 Will supersede EN 14388:2005
English Version
Road traffic noise reducing devices - Specifications
Dispositifs de réduction du bruit du trafic routier - Lärmschutzeinrichtungen an Straßen - Vorschriften
Spécifications
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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland 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

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 14388:2010: E
worldwide for CEN national Members.

prEN 14388:2010 (E)
Contents
Foreword . 4
Introduction . 5
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Quantities and units . 5
5 Characteristics . 5
6 Evaluation of conformity . 8
Annex ZA (informative) Clauses of this European Standard addressing essential requirements or
other provisions of EU Directives . 10
ZA.1 Requirement/Characteristic from the Mandate . 10
ZA.2 Procedure(s) for attestation of conformity of products . 12
ZA.3 CE-marking . 13

prEN 14388:2010 (E)
Foreword
This document (prEN 14388:2010) 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 14388:2005.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive.
For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document.

prEN 14388:2010 (E)
1 Scope
This document specifies the performance requirements and methods of evaluation for road traffic noise
reducing devices. This document covers acoustic, non-acoustic and long term performance, but not
aspects such as resistance to vandalism or requirements of visual appearance.
This document covers products used for road traffic noise reduction made from any materials. This
document does not cover road surfaces or the airborne sound insulation of houses.
This document does not cover material specific characteristics necessary to meet the performance
requirements of the standard. If existing, material specific standards should also apply in accordance with
the specifications prescribed hereafter.

2 Normative references
The following referenced documents are indispensable for the application 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 1793-1:1997, Road traffic noise reducing devices — Test method for determining the acoustic
performance — Part 1: Intrinsic characteristics of sound absorption.
EN 1793-2, Road traffic noise reducing devices — Test method for determining the acoustic performance —
Part 2: Intrinsic characteristics of airborne sound insulation under diffuse sound field conditions.
EN 1794-1:2003, Road traffic noise reducing devices — Non-acoustic performance — Part 1: Mechanical
performance and stability requirements.
EN 1794-2:2003, Road traffic noise reducing devices — Non-acoustic performance — Part 2: General safety
and environmental requirements.
EN 14389-1:2007, Road traffic noise reducing devices — Procedures for assessing long term performance
— Part 1 — Acoustical characteristics.
EN 14389-2:2004, Road traffic noise reducing devices — Procedures for assessing long term performance
— Non-acoustic characteristics.
EN ISO 9001:2000, Quality managements systems — Requirements (ISO 9001:2000).
CEN/TS 1793-4, Road traffic noise reducing devices — Test method for determining the acoustic
performance — Part 4: Intrinsic characteristics — In situ values of sound diffraction.
prEN 1793-6, Road traffic noise reducing devices — Test method for determining the acoustic performance
— Part 6: Intrinsic characteristics — In situ values of airborne sound insulation under direct sound field
conditions.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
prEN 14388:2010 (E)
3.1
noise barrier
noise reducing device, which obstructs the direct transmission of airborne sound emanating from road traffic

3.2
acoustic element
element whose primary function is to provide the acoustic performance of the device

3.3
structural element
element whose primary function is to support or hold in place acoustic elements

3.4
cladding
noise-reducing device, which is attached to a wall or other structure and reduces the amount of sound
reflected
3.5
cover
noise-reducing device, which either spans or overhangs the highway

3.6
added device
added component that influences the acoustic performance of the original noise-reducing device (acting
primarily on the diffracted energy)

NOTE     Noise barriers, cladding and covers may include both acoustic and structural elements.

4 Quantities and units
Quantities and units referred to in this document shall be as defined in the corresponding supporting
standards cross-referenced in Table 1.

5 Characteristics
5.1 Evaluation of performance
Evaluation of performance shall be carried out according to Table 1 for each for all types of noise reducing
devices. In order to take into account existing regulations on products where performance(s) for one or more
characteristics may not be required, due to the characteristic(s) for a given intended use that is/are not
subject to regulation in the Member State(s) where the product is placed on the market, the NPD-option can
always be used by manufacturers.

NOTE     See Annex ZA for explanation of NPD.

5.2 Dangerous substances
Materials used in products shall not release any dangerous substances in excess of the maximum permitted
levels specified in a relevant European Standard for the material or permitted in the national regulations of
the member state of destination. The requirements of EN 1794-2:2003, Annex C shall apply in conjunction
with the requirements of this clause.
prEN 14388:2010 (E)
Table 1 — Characteristics relevant to different noise reducing devices

Characteristic Noise Cladding Cover Structural Added
And relevant supporting standard barrier element  device
(if tested ++
separately)
Sound absorption
EN 1793-1 E ▲ E - -
1 1
Airborne sound insulation
EN 1793-2 in reverberant fields ▲ - ▲ - -
EN 1793-6 in non-reverberant fields ▲ - ▲ - -
Wind and static Loading
EN 1794-1:2003, Annex A ▲ ▲ ▲ ▲ ▲
Self weight
EN 1794-1:2003, Annex B ▲ ▲ ▲ ▲ ▲
Impact of stones
EN 1794-1:2003, Annex C ▲ ▲ ▲ O ▲
Safety in collision (vehicle occupant

safety)
EN 1794-1:2003, Annex D O O - O O
Safety in collision (combined safety
and noise barrier)
EN 1794-1:2003, Annex D E E - - E
2 3 3
Dynamic load from snow clearance

EN 1794-1:2003, Annex E ▲ ▲ - ▲ ▲
Resistance to brush fire
EN 1794-2:2003, Annex A ▲ ▲ ▲ ▲ ▲
Danger of falling debris
EN 1794-2:2003, Annex B ▲ ▲ ▲ ▲ ▲
Environmental protection
EN 1794-2:2003, Annex C ▲ ▲ ▲ ▲ ▲
Means of escape
EN 1794-2:2003, Annex D ▲ ▲ ▲ - -
Light reflection
EN 1794-2:2003, Annex E ▲ ▲ ▲ ▲ ▲
Transparency
EN 1794-2:2003, Annex F O - O - O
Diffraction index improvement
CEN/TS 1793-4 - - - - ▲
- : not applicable
▲ : for this characteristic, it is necessary to report the value, or the class, or the fact that no
performance is declared.
O : optional.
++ : added device shall be evaluated in combination with the supporting Noise Reducing Device
according to its intended use.
E : only applicable if the device is described as sound absorptive.
E : only applicable if classified as a combined safety and noise barrier as defined in EN 1794-
1:2003, 4.4 (otherwise optional).
E : only applicable if fixed on combined safety and noise barrier as defined in EN 1794-1:2003, 4.4
(otherwise optional).
prEN 14388:2010 (E)
5.3 Requirements
The manufacturer shall provide the results of tests and/or calculations of the characteristics, in accordance
with the appropriate supporting standard listed in Table 2.

The performance shall not be less than the performance stated in material specific European Standards
where they exist.
NOTE   Although some are already complete, European Standards are under preparation for materials affecting the
performance of road traffic noise reducing devices.

Table 2- Test methods
Characteristic Test method
a c
Sound absorption DLα EN 1793-1

Sound insulation
b c
EN 1793-2
DL in reverberant fields
R
b c
EN 1793-6
DL in non-reverberant fields
SI
Resistance to loads
EN 1794-1:2003, Annex B
Self weight of an acoustic element: wet, reduced wet or dry as defined in B.2
c
of EN 1794-1:2003 . (calculated or tested)

EN 1794-1:2003, Annex B
Maximum vertical load an element can withstand in order to fulfil B.3.2 of EN
e
1794-1:2003 (load from upper elements) (calculated or tested)

EN 1794-1:2003, Annex A
Maximum normal (90°) load an acoustic element can withstand in order to
c
fulfil A.3.3 of EN 1794-1:2003 (wind and static load) . (calculated or tested)

EN 1794-1:2003, Annex A and B
Maximum normal (90°) load a structural element can withstand in order to
d
fulfil A.3.2 and B.3.3 of EN 1794-1:2003 (wind, static load and self weight) . (calculated or tested)

Maximum bending moment a structural element can withstand in order to EN 1794-1:2003, Annex E
d
(calculated or tested)
fulfil E.2 of EN 1794-1:2003 (dynamic load from snow clearance) .

EN 1794-1:2003, Annex E
Maximum normal (90°) load an acoustic element can withstand in order to
c
. (calculated or tested)
fulfil E.2 of EN 1794-1:2003 (dynamic load from snow clearance)

c
Resistance to brush fire EN 1794-2:2003, Annex A

c
EN 1794-2:2003, Annex B
Risk of falling debris
Light Reflectivity: The value of reflectivity measured in accordance with E.3 EN 1794-2:2003, Annex E
c
of EN 1794-2:2003
Release of dangerous substances EN 1794-2:2003, Annex C

Durability
EN 14389-1:2007
Acoustic parameters
EN 14389-2:2004
Non acoustic parameters
Impact of stones: damages caused by controlled impacts EN 1794-1:2003, Annex C
(tested)
Safety in collision: behaviour under impacts specified in EN 1371-2
EN 1794-1:2003, Annex D
Environmental protection: identification of constituent materials and
breakdown products EN 1794-2:2003, Annex C

EN 1794-2:2003, Annex D
Means of escape: Asses
...