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CIE S 027/E:2024

Photometry of road illumination devices, light-signalling devices and retroreflective devices for road vehicles
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CIE S 027/E:2024

Photometry of road illumination devices, light-signalling devices and retroreflective devices for road vehicles

PUBLISH DATE 2024
PAGES 86
CIE S 027/E:2024
This standard provides requirements to perform reproducible photometric and colorimetric measurements on road illumination devices, light-signalling devices and retroreflective devices to be used in road vehicles. It also provides advice for reporting the data and lists major equipment, instrumentation and procedures to record properties of approved lighting devices according to requirements specified in corresponding UN regulations. The availability of reliable and accurate photometric data for type approval1 of road illumination devices, light-signalling devices and retroreflective devices is a basic requirement for the comparability between industry and test facilities as well as between technical services and approval authorities. By obtaining these data through measurements in specific normalized measuring conditions, the consistency of the data should be ensured between different laboratories within the limits of the declared measurement uncertainty. This standard aims in particular to cover measurement methods for testing the compliance of approved road illumination devices, light-signalling devices and retroreflective devices with the photometric and colorimetric requirements as stated within different UN regulations for a variety of lighting applications in road vehicles. For each photometric and colorimetric property, the possible data acquisition process(es) with their uncertainties are considered individually. This CIE International Standard has been prepared by Technical Committee 2-67 "Photometry of Lighting and Light-signalling Devices for Road Vehicles" of Division 2 "Physical measurement of light and radiation" of the Commission Internationale de l’Eclairage. The work has been performed in close contact with GTB (Groupe de Travaille Bruxelles 1952) Working Group Photometry, of which most of its members are representatives of technical services accredited for approval testing of light and light signalling devices. This document has been created for laboratories having the need to perform accurate and reproducible photometric and colorimetric tests required for approval testing according to automotive lighting regulations. It has been developed based on CIE S 025:2015 and partially incorporates the former Photometry Laboratory Accuracy Guidelines, Edition 3, 2005, as stated in GTB document CE-3874.
SDO CIE: International Commission on Illumination
Document Number S 027/E
Publication Date Jan. 1, 2024
Language en - English
Page Count 88
Revision Level
Supercedes
Committee
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