National foreword

This British Standard is the UK implementation of EN 12464‑2:2024. It supersedes BS EN 12464‑2:2014, which is withdrawn.

The UK participation in its preparation was entrusted to Technical Committee EL/1, Light and lighting applications.

A list of organizations represented on this committee can be obtained on request to its committee manager.

Contractual and legal considerations

This publication has been prepared in good faith, however no representation, warranty, assurance or undertaking (express or implied) is or will be made, and no responsibility or liability is or will be accepted by BSI in relation to the adequacy, accuracy, completeness or reasonableness of this publication. All and any such responsibility and liability is expressly disclaimed to the full extent permitted by the law.

This publication is provided as is, and is to be used at the recipient’s own risk.

The recipient is advised to consider seeking professional guidance with respect to its use of this publication.

This publication is not intended to constitute a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2024.

This European Standard was approved by CEN on 13 October 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, Czechia, 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 foreword

This document (EN 12464‑2:2024) has been prepared by Technical Committee CEN/TC 169 “Light and lighting”, the secretariat of which is held by DIN.

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 May 2025, and conflicting national standards shall be withdrawn at the latest by May 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 12464‑2:2014.

EN 12464‑2:2024 includes the following significant technical changes with respect to EN 12464‑2:2014:

A new Clause 4 is introduced to summarize “Symbols and abbreviations”.
The recommendations given in the tables in Clause 6 are slightly revised, new applications are added where appropriate and take user needs more into account than in the past. Thus, the requirements for necessary illuminance according to Clause 6 are more differentiated including the relevance of context modifiers.
Variability of light is given more accordance (5.1).
A maximum for cell grid size is given (5.3.5).
The graphical representation of the grid cell size as a function of calculation area dimension in Figure 1 (5.3.5) has been extended.
The environmental zone E0 is introduced (5.5).
Flicker and stroboscopic effect is updated (5.8).
Sustainability is updated (5.10).
A new informative Annex A is introduced to provide “Reflectances of some outdoor materials”.
A new informative Annex B is introduced to provide additional information on the specific requirements for railway installations that are given in Table 22.

EN 12464, Light and lighting — Lighting of work places consists of the following parts:

Part 1: Indoor work places
Part 2: Outdoor work places

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

To enable people to perform outdoor visual tasks efficiently and accurately, especially during the night, adequate and appropriate lighting should be provided.

The degree of visibility and comfort required in a wide range of outdoor work places is governed by the type and duration of activity.

This document specifies requirements for lighting of tasks in most outdoor work places and their associated areas in terms of quantity and quality of illumination. In addition, recommendations are given for good lighting practice.

It is important that all clauses of the document are followed although the specific requirements are tabulated in the schedule of lighting requirements (see Clause 6).

All photometric quantities are based on photopic photometry.

The original standard EN 12464‑2:2007 was already further developed in its first revision EN 12464‑2:2014. It specifies the requirements for good lighting solutions rather than giving design guidelines. With the experience of applying the standard, next steps are taken in the development of this new edition and human and user needs are given broader acknowledgement. Technologically LED has taken over as the main light source from previous technologies. The revision of the standard is aligned to the parallel standard for indoor workplaces EN 12464‑1:2021.

1 Scope

This document specifies lighting requirements for humans in outdoor work places, which meet the needs for visual comfort and performance of people having normal, or corrected to normal ophthalmic (visual) capacity. Usual visual tasks and the avoidance of obtrusive light are considered.

This document specifies requirements for lighting solutions for most outdoor work places and their associated areas in terms of quantity and quality of illumination. In addition, recommendations are given for good lighting practice. This document does not specify lighting requirements with respect to the safety and health of people at work and has not been prepared in the field of application of Article 153 of Treaty on the Functioning of the European Union although the lighting requirements, as specified in this document, usually fulfil safety needs.

NOTE Lighting requirements with respect to the safety and health of workers at work can be contained in Directives based on Article 153 of Treaty on the Functioning of the European Union, in national legislation of member states implementing these directives or in other national legislation of member states.

This document neither provides specific solutions, nor restricts the designers' freedom from exploring new techniques nor restricts the use of innovative equipment. The illumination can be provided by daylight, electric lighting or a combination of both.

This document is not applicable for the lighting of indoor work places and underground mining or emergency lighting. For indoor work places, see EN 12464‑1 and for emergency lighting, see EN 1838 and EN 13032‑3.

2 Normative references

3 Terms and definitions

4 Symbols and abbreviations

5 Lighting design criteria

5.1 Luminous environment

5.2 Luminance distribution

5.3 Illuminance

5.4 Glare

5.5 Obtrusive light

5.6 Lighting the exterior space

5.7 Colour aspects

5.8 Flicker and stroboscopic effects

5.9 Maintenance factor

5.10 Sustainability

5.11 Adaptive lighting

6 Schedule of lighting requirements

6.1 General

6.2 Composition of the Tables 7 to 25 below

6.3 The schedule of areas, tasks and activities

6.4 Lighting requirements for areas, tasks and activities

7 Verification procedures

7.1 General

7.2 Illuminance

7.3 Glare Rating

7.4 Colour Rendering Index and colour appearance

7.5 Obtrusive light

7.6 Maintenance schedule

Bibliography

BS EN 12464-2:2024

Light and lighting. Lighting of work places - Outdoor work places

Current

Published:

30 Nov 2024