Publishing and copyright information

The BSI copyright notice displayed in this document indicates when the document was last issued.

The following BSI references relate to the work on this document:

Committee reference EL/1/3

Draft for comment 15/30296173 DC

Publication history

First published September 1974
Second edition March 1987
Third edition August 1992
Fourth edition December 2003
Fifth (present) edition April 2016

Foreword

Publishing information

This part of BS 5489 is published by BSI Standards Limited, under licence from The British Standards Institution, and came into effect on 30 April 2016. It was prepared by Subcommittee EL/1/3,Tunnel lighting, under the authority of Technical Committee EL/1, Light and lighting. A list of organizations represented on these committees can be obtained on request to their secretary.

Supersession

This part of BS 5489 supersedes BS 5489‑2:2003+A1:2008, which is withdrawn.

Relationship with other publications

BS 5489 consists of two parts:

Part 1: Lighting of roads and public amenity areas;
Part 2: Lighting of tunnels.

Information about this document

This is a full revision of the standard to align the standard with current best practice.

The aim of this standard is to promote wider understanding of the lighting of tunnels for motorized and mixed traffic and to give guidance on the design decisions that need to be made. It contains recommendations that are essential to the design process and that will enable production of designs that are appropriate and justifiable.

Use of this document

As a code of practice, this part of BS 5489 takes the form of guidance and recommendations. It should not be quoted as if it were a specification and particular care should be taken to ensure that claims of compliance are not misleading.

Any user claiming compliance with this part of BS 5489 is expected to be able to justify any course of action that deviates from its recommendations.

It has been assumed in the preparation of this part of BS 5489 that the execution of its provisions will be entrusted to appropriately qualified and experienced people, for whose use it has been produced.

The design of lighting for tunnels is a complex process with many different aspects and therefore it is important that this standard is read thoroughly to ensure that all relevant issues are taken into account.

Presentational conventions

The provisions of this standard are presented in roman (i.e. upright) type. Its recommendations are expressed in sentences in which the principal auxiliary verb is “should”.

Commentary, explanation and general informative material is presented in smaller italic type, and does not constitute a normative element.

The word “should” is used to express recommendations of this standard. The word “may” is used in the text to express permissibility, e.g. as an alternative to the primary recommendation of the clause. The word “can” is used to express possibility, e.g. a consequence of an action or an event.

Notes and commentaries are provided throughout the text of this standard. Notes give references and additional information that are important but do not form part of the recommendations. Commentaries give background information.

Contractual and legal considerations

This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.

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

1 Scope

This part of BS 5489 gives recommendations for the design of the lighting of tunnels for motorized and mixed traffic. It is applicable to all types of road, including motorways.

This standard is applicable to those aspects of lighting that are concerned with traffic safety, such as arrangements, levels and other parameters including daylight.

This standard is not applicable to aspects of lighting that concern aesthetics. This part of BS 5489 is not applicable to the lighting of underpasses or subways reserved for pedestrians or cyclists, which is covered in BS 5489‑1.

NOTE 1 This part of BS 5489 is based on photometric considerations, and all values of luminance and illuminance are maintained levels.

NOTE 2 In this standard “lamp” and “lamps” also include LED light sources.

2 Normative references

3 Terms, definitions and symbols

4 Tunnel conditions

4.1 General

4.2 Daytime conditions

4.3 Night-time conditions

4.4 Daytime lighting of short tunnels

5 Tunnel lighting design

5.1 Determination of stopping sight distance

5.2 Tunnel lighting classification

5.3 Determination of access zone luminance

5.4 Determination of tunnel zone daytime lighting levels

5.5 Luminance and uniformity values

5.6 Tunnel walls

5.7 Determination of night-time lighting levels

5.8 Flicker

5.9 Glare

5.10 Lighting controls

5.11 Mains failure lighting

6 Calculation and measurement

6.1 Calculation

6.2 Measurement

Bibliography

BS 5489-2:2016

Code of practice for the design of road lighting - Lighting of tunnels

Current, Under Review

Published:

30 Apr 2016