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7.1.2012 Official
Journal
of
the
European
Union L
4/27
Only the original UN/ECE texts have legal effect under international public law. The status and date of entry into force of this Regulation
should be checked in the latest version of the UN/ECE status document TRANS/WP.29/343, available at:
http://www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29fdocstts.html
2010 amendments to Regulation No 91 of the Economic Commission for Europe of the United
Nations (UN/ECE) — Uniform provisions concerning the approval of side-marker lamps for motor
vehicles and their trailers
Amendments to Regulation 91 published in OJ L 164, 30.6.2010, p. 69.
Incorporating:
Supplement 12 to the original version of the Regulation — Date of entry into force: 9 December 2010
Supplement 13 to the original version of the Regulation — Date of entry into force: 23 June 2011
Amendments to the Table of Contents
Table of Contents, amend to read:
‘…
ANNEXES
Annex 1 — Minimum angles required for light distribution in space
Annex 2 — Communication concerning the approval or refusal or extension or withdrawal of
approval or production definitely discontinued of a type of side-marker lamp marked
SM1/SM2
Annex 3 — Examples of arrangements of approval marks
Annex 4 — Photometric measurements
Annex 5 — Minimum requirements for conformity of production control procedures
Annex 6 — Minimum requirements for sampling by an inspector’
Amendments to the main text of the Regulation
Insert a new paragraph 6.3.3 to read:
‘6.3.3. A light source module shall be so designed that regardless of the use of tool(s), it shall not be
mechanically interchangeable with any replaceable approved light source.’
Paragraph 8, amend to read:
‘8. COLOUR
OF
LIGHT
EMITTED
The colour of the light emitted inside the field of the light distribution grid defined at
paragraph 2 of Annex 4 shall be amber. However it can be red, if the rearmost side-marker
lamp is grouped or combined or reciprocally incorporated with the rear position lamp, the rear
end-outline marker lamp, the rear fog lamp, the stop lamp, or is grouped with or has part of
the light emitting surface in common with the rear retro-reflector. To check these colorimetric
characteristics, the test procedure described in paragraph 9 of this Regulation shall be applied.
Outside this field no sharp variation of colour shall be observed.
However, for lamps equipped with non-replaceable light sources (filament lamps and other), the
colorimetric characteristics should be verified with the light sources present in the lamp, in
accordance with relevant subparagraphs of paragraph 9.1 of this Regulation.’
Paragraphs 8.1 and 8.2 shall be deleted.

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L 4/28
EN
Official Journal of the European Union
7.1.2012
Paragraphs 9 to 9.3, amend to read:
‘9. TEST
PROCEDURE
9.1. All
measurements,
photometric
and
colorimetric,
shall
be
made:
9.1.1. In case of a lamp with replaceable light source, if not supplied by an electronic light source
control gear with an uncoloured or coloured standard filament lamp of the category prescribed
for the device, at the voltage necessary to produce the reference luminous flux required for that
category of filament lamp.
9.1.2. In the case of a lamp equipped with non-replaceable light sources (filament lamps and other),
at 6,75 V, 13,5 V or 28,0 V, respectively.
9.1.3. In the case of a system that uses an electronic light source control gear being part of the
lamp (*) applying at the input terminals of the lamp the voltage declared by the manufacturer
or, if not indicated, 6,75 V, 13,5 V or 28,0 V, respectively.
9.1.4. In the case of a system that uses an electronic light source control gear not being part of the
lamp the voltage declared by the manufacturer shall be applied to the input terminals of the
lamp.
9.2.
The test laboratory shall require from the manufacturer the light source control gear needed to
supply the light source and the applicable functions.
9.3. The
voltage
to
be
applied
to
the
lamp
shall
be
noted
in
the
communication
form
in
Annex
2
of
this Regulation.
___________
(*) For the purpose of this Regulation "being part of the lamp" means to be physically included in the
lamp body or to be external, separated or not, but supplied by the lamp manufacturer as part of
the lamp system. The functioning and installation conditions of these additional systems will be
defined by special provisions.’
Insert new paragraph 9.4 to read:
‘9.4. The limits of the apparent surface in the direction of the reference axis of a light-signalling
device shall be determined.’
Paragraph 11.2, amend to read:
‘11.2. The minimum requirements for conformity of production control procedures set forth in
Annex 5 to this Regulation shall be complied with.’
Paragraph 11.3, amend to read:
‘11.3. The minimum requirements for sampling by an inspector set forth in Annex 6 to this Regu
lation shall be complied with.’
Amendments to Annexes
Annex 2, item 9, amend to read:
‘9. Concise
description
( 3 ):
[…]
Geometrical conditions of installation and relating variations, if any
Application of an electronic light source control gear/variable intensity control:
(a) being part of the lamp: yes/no/not applicable ( 2 );

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EN
7.1.2012 Official
Journal
of
the
European
Union L
4/29
(b) being not part of the lamp: yes/no/not applicable ( 2 ).
Input voltage(s) supplied by an electronic light source control gear/variable intensity control:
Electronic light source control gear/variable intensity control manufacturer and identification
number (when the light source control gear is part of the lamp but is not included into the
lamp body):’
Annex 3, the title, amend to read:
‘EXAMPLES OF ARRANGEMENTS OF APPROVAL MARKS’
Annex 4, paragraph 3.1, amend to read:
‘3.1. For
non-replaceable
light
sources
(filament
lamps
and
other):
with the light sources present in the lamp, in accordance with the relevant subparagraph of
paragraph 9.1 of this Regulation.’
Annex 5 shall be deleted.
Annex 6 (former), renumber as Annex 5.
Annex 5 (new), paragraph 2.5, amend to read:
‘2.5. Criteria
governing
acceptability
The manufacturer is responsible for..[…]
The criteria governing the acceptability shall be such that, with a confidence level of 95 per
cent, the minimum probability of passing a spot check in accordance with Annex 6 (first
sampling) would be 0,95.’
Annex 7 (former), renumber as Annex 6.

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