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ISO 16508:1999

Road traffic lights — Photometric properties of 200 mm roundel signals

Dec 16, 1999

General information

90.20     Apr 15, 2026

ISO

CIE

International Standard

93.080.30  

English   French  

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Scope

The visibility of a road traffic signal depends on many factors, the most important of which are
the colour, luminous intensity and luminous intensity distribution of the light.
This Standard deals with the colour, luminous intensity and luminous intensity distribution for
200 mm road traffic signals. The serious problem of sun phantom, which can affect the correct
recognition of the light, is included in the Standard.
Reference documents relating to the colour of road traffic signals are detailed.

Life cycle

NOW

PUBLISHED
ISO 16508:1999
90.20 Standard under periodical review
Apr 15, 2026

REVISED BY

ABANDON
ISO/CIE WD 16508

Related project

Adopted from CIE S 006.1/E:1998

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