CEN/TR 14380:2024
(Main)Lighting applications - Tunnel lighting
Lighting applications - Tunnel lighting
This document describes the current practice in the design of the lighting of road tunnels and underpasses for motorized and mixed traffic. This concerns arrangements, levels and other parameters including daylight, which are related only to traffic safety. Aspects concerning visual comfort are generally chosen in agreement with national rules. The information in this report concerns any tunnel or underpass where the decision to provide lighting has been taken by any authority working within national legislation or other constraints. The design is based on photometric considerations, and all values of luminance or illuminance are maintained values.
The main body of the report covers the common aspects of Tunnel Lighting, and the various methods currently used in Europe are detailed in the annexes. No single method is recommended.
Angewandte Lichttechnik - Tunnelbeleuchtung
Eclairagisme - Eclairage des tunnels
Le présent document décrit les pratiques courantes quant à la conception de l’éclairage des tunnels routiers et des passages inférieurs pour le trafic automobile et le trafic mixte. Celles-ci concernent les dispositions, niveaux et autres paramètres, y compris la lumière naturelle, uniquement liés à la sécurité de la circulation automobile. Les considérations liées au confort visuel sont généralement établies en accord avec les réglementations nationales. Les informations du présent rapport s’appliquent à tous les tunnels ou passages inférieurs pour lesquels une autorité travaillant dans le cadre de la législation nationale ou d’autres contraintes a décidé d’installer un système d’éclairage. La conception repose sur des considérations photométriques. Toutes les valeurs de luminance ou d’éclairement sont des valeurs à maintenir.
Le corps principal du présent Rapport technique traite des aspects communs de l’éclairage des tunnels ; les diverses méthodes actuellement utilisées en Europe sont décrites en détail dans les annexes. Aucune méthode particulière n’est recommandée.
Uporaba razsvetljave - Razsvetljava v predorih
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2025
Nadomešča:
SIST-TP CR 14380:2004
Uporaba razsvetljave - Razsvetljava v predorih
Lighting applications - Tunnel lighting
Angewandte Lichttechnik - Tunnelbeleuchtung
Eclairagisme - Eclairage des tunnels
Ta slovenski standard je istoveten z: CEN/TR 14380:2024
ICS:
93.060 Gradnja predorov Tunnel construction
93.080.40 Cestna razsvetljava in Street lighting and related
pripadajoča oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
CEN/TR 14380
TECHNICAL REPORT
RAPPORT TECHNIQUE
October 2024
TECHNISCHER REPORT
ICS 93.080.40 Supersedes CR 14380:2003
English Version
Lighting applications - Tunnel lighting
Eclairagisme - Eclairage des tunnels Angewandte Lichttechnik - Tunnelbeleuchtung
This Technical Report was approved by CEN on 6 October 2024. It has been drawn up by the Technical Committee CEN/TC 169.
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. CEN/TR 14380:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 General aspects of tunnel lighting . 18
5 Dimensioning rules for the lighting of road tunnels . 24
6 Lighting in emergency conditions . 26
7 Measurement of tunnel lighting installations . 26
Annex A (informative) L20 Methodology . 31
A.1 General. 31
A.2 Luminance level in the threshold zone . 31
A.3 Length of the threshold zone . 32
A.4 Lighting requirements for the transition zone . 32
A.5 Daytime lighting of the interior zone . 34
A.6 Lighting of the walls . 35
A.7 Uniformity of the road surface luminance . 35
A.8 Lighting of the exit zone . 35
A.9 Night-time lighting . 35
A.10 Glare and flicker . 35
A.11 Determination of the threshold luminance L . 36
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Annex B (informative) Traffic weighted L20 methodology . 41
B.1 General. 41
B.2 The determination of the tunnel class . 41
B.3 The lighting of the threshold zone of long tunnels . 42
B.4 The length of the threshold and transition zone . 42
B.5 The daytime road surface luminance of the interior zone . 43
B.6 The exit zone . 43
B.7 Uniformity of the road luminance . 43
B.8 The lighting of the tunnel walls . 44
B.9 Glare restriction . 44
B.10 Restriction of the flicker effect. 44
B.11 Night-time lighting . 44
Annex C (informative) The CIE perceived contrast methodology . 45
C.1 Definition of contrast . 45
C.2 Methodology bases . 46
C.3 The vision model for the veiling luminance. 47
C.4 Determination of the equivalent veiling luminance . 49
C.5 Calculation of threshold luminance . 52
C.6 Luminance level in the threshold zone . 53
C.7 Length of the threshold zone . 53
C.8 Lighting of the transition zone . 53
C.9 Daytime lighting of the interior zone . 53
C.10 Lighting of the walls . 53
C.11 Uniformity of the road surface luminance . 53
C.12 Lighting of the exit zone . 53
C.13 Night-time lighting . 53
C.14 Glare and flicker . 53
Annex D (informative) The space and time adaptation method as used in France . 54
D.1 The principle of the method . 54
D.2 The adaptation luminance . 54
D.3 The space adaptation . 55
D.4 The time adaptation . 55
D.5 Characterizing the lighting installation . 56
D.6 Calculating road luminance . 57
D.7 Algorithm of L calculations . 57
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D.8 Calculation details for one 10 m step for a rather simple case . 59
D.9 Calculating illuminance levels . 61
D.10 The results. 61
D.11 Road surface luminance of the interior zone at daytime . 67
D.12 Night-time lighting . 67
D.13 Lighting of the walls of the interior zone . 67
D.14 Uniformity of the road surface luminance . 68
Annex E (informative) An energy saving approach: practice from Italy . 69
E.1 Preamble . 69
E.2 Specific terms and conventional values . 70
E.3 Tunnel classification . 71
E.4 Lighting conditions for traffic safety . 72
E.5 Interior zone and night-time conditions . 73
E.6 Glare due to lighting installation. 73
E.7 Supplementary strategies to increase energy saving . 73
E.8 Calculations . 74
Annex F (informative) Determination of the need for daytime lighting of short tunnels . 75
F.1 Determination of the Look Through Percentage . 75
F.2 Using the Look Through Percentage . 77
F.3 Influencing the Look Through Percentage . 78
F.4 Daytime lighting of short tunnels . 78
F.5 A table method for determining the need of daytime electric lighting . 78
Annex G (informative) Calculation of the stopping distance . 81
Bibliography . 84
European foreword
This document (CEN/TR 14380:2024) has been prepared by Technical Committee CEN/TC 169 “Light
and Lighting”, the secretariat of which is held by DIN.
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 CR 14380:2003.
In comparison with the previous edition, the following modifications have been made:
— The whole content has been rewritten to comply with the CEN/CENELEC Internal Regulations part
3 rules applying to Technical Reports (informative document);
— The definitions have been updated following EN 12665:2024, as closely as possible;
— A new Clause 5 (“Dimensioning rules for the lighting of road tunnels”) replaces the previous
subclause 4.2 (“Distinction between long and short tunnels”), Clause 5 (“Lighting of long tunnels”)
and Clause 6 (“Artificial lighting of short tunnels and underpasses”);
— The clause “Emergency lighting” has been renamed “Lighting in emergency conditions”;
— The term “Standby lighting” has been replaced by “Safety lighting”;
— In Clause 6 “Lighting in emergency conditions”, a Note has been added on the requirement of safety
lighting in tunnels concerned by the European Directive 2004/54/EC 12/2022;
— The previous Clause “Traffic signals” has been removed;
— In Annex A and Annex B, t
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