SOUTH AFRICAN NATIONAL STANDARD

Transcription

1 ISBN SOUTH AFRICAN NATIONAL STANDARD Traffic lights WARNING This document references other documents normatively. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: Fax: SABS

2 Table of changes Change No. Date Scope Foreword This South African standard was approved by National Committee SABS/TC 064, Lighting and optics, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This document was approved for publication in February This document supersedes SANS 1459:2004 (edition 1.4). This document is referenced in the Regulations of the National Road Traffic Act, 1996 (Act No. 93 of 1996). Annex A forms an integral part of this document. Annex B is for information only.

3 Contents Page Foreword 1 Scope Normative references Definitions and abbreviations Requirements Inspection and methods of test Inspection Colour test Luminous intensity test Luminance test Sun-phantom test Endurance test Dielectric strength test Measurement of insulation resistance Test for resistance in the earthing circuit Rain test Dust test Cross-cut test Artificial weathering test Marking Figures Annex A (normative) Notes to purchasers Annex B (informative) Quality evaluation of traffic lights Bibliography

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5 Traffic lights 1 Scope 1.1 This standard gives requirements for electrically operated signal lights for the warning and regulation of vehicular road traffic and pedestrian traffic. Two classes of vehicular traffic lights, depending on their photometric performance, i.e. normal intensity and high intensity, are covered. 1.2 This standard does not cover a) the arrangement of the aspects constituting a traffic light, b) the equipment for the electrical control of a traffic light, c) the cycle times or sequence of operation, d) the installation and positioning of traffic lights, and e) the supports for traffic lights. 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. Information on currently valid national and international standards can be obtained from the SABS Standards Division. IEC :1969, Lamp caps and holders together with gauges for the control of interchangeability and safety Part 1: Lamp caps. ISO , Paints and varnishes Methods of exposure to laboratory light sources Part 1: General guidance. ISO , Paints and varnishes Methods of exposure to laboratory light sources Part 2: Xenon-arc lamps. SANS 2409/ISO 2409, Paints and varnishes Cross-cut test. 3