Regulation No. 91-00

Name:Regulation No. 91-00
Description:Side Marker Lamps.
Official Title:Uniform Provisions Concerning the Approval of: Side-marker Lamps for Motor Vehicles and their Trailers.
Country:ECE - United Nations
Date of Issue:1993-07-15
Amendment Level:00 Series, Supplement 17
Number of Pages:29
Vehicle Types:Agricultural Tractor, Bus, Car, Component, Heavy Truck, Light Truck, Trailer
Subject Categories:Lighting and Light Signalling Equipment
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Keywords:

regulation, approval, lamp, light, lamps, side-marker, source, type, supplement, force, date, entry, amendments, series, original, requirements, annex, case, version, approved, filament, paragraph, intensity, conformity, minimum, applying, production, mark, manufacturer, non-replaceable, module, granted, accordance, form, equipped, contracting, number, sources, parties, marking, device, tests, luminous, reference, photometric, side, vehicle, control, test, marker

Text Extract:

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E/ECE/324
) Rev.1/Add.90/Rev.3/Amend.2
E/ECE/TRANS/505 )
April 26, 2018
STATUS OF UNITED NATIONS REGULATION
ECE 91-00
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
SIDE-MARKER LAMPS FOR MOTOR VEHICLES AND THEIR TRAILERS
Incorporating:
00 series of amendments
Date of Entry into Force: 15.10.93
Supplement 1 to the 00 series of amendments
Date of Entry into Force: 15.02.96
Supplement 2 to the 00 series of amendments
Date of Entry into Force: 21.09.97
Supplement 3 to the 00 series of amendments
Date of Entry into Force: 29.12.00
Supplement 4 to the 00 series of amendments
Date of Entry into Force: 12.08.02
Corr. 1 to Supplement 4 to the 00 series of amendments
Dated: 12.11.03
Supplement 5 to the 00 series of amendments
Date of Entry into Force: 16.07.03
Supplement 6 to the 00 series of amendments
Date of Entry into Force: 27.02.04
Corr. 1 to Supplement 6 to the 00 series of amendments
Dated: 27.02.04
Supplement 7 to the 00 series of amendments
Date of Entry into Force: 23.06.05
Supplement 8 to the 00 series of amendments
Date of Entry into Force: 04.07.06
Supplement 9 to the 00 series of amendments
Date of Entry into Force: 02.02.07
Supplement 10 to the 00 series of amendments
Date of Entry into Force: 11.07.08
Supplement 11 to the 00 series of amendments
Date of Entry into Force: 15.10.08
Supplement 12 to the 00 series of amendments
Date of Entry into Force: 09.12.10
Supplement 13 to the 00 series of amendments
Date of Entry into Force: 23.06.11
Supplement 14 to the 00 series of amendments
Date of Entry into Force: 15.07.13
Supplement 15 to the 00 series of amendments (Revision 3)
Date of Entry into Force: 03.11.13
Corr. 1 to Revision 3 of the Regulation
Dated: 13.03.15
Supplement 16 to the 00 series of amendments
Date of Entry into Force: 10.10.17
Supplement 17 to the 00 series of amendments
Date of Entry into Force: 10.02.18

REGULATION
REGULATION NO. 91
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF
SIDE-MARKER LAMPS FOR MOTOR VEHICLES AND THEIR TRAILERS
CONTENTS
1.
Scope
2.
Definitions
3.
Application for approval
4.
Markings
5.
Approval
6.
General specifications
7.
Intensity of light emitted
8.
Colour of light emitted
9.
Test procedure
10.
Modification of a side-marker lamp type and extension of approval
11.
Conformity of production
12.
Penalties for non-conformity of production
13.
Production definitively discontinued
14.
Names and addresses of Technical Services responsible for conducting approval tests, and of
Type Approval Authorities
15.
Transitional provisions
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
Annex 4
Annex 5
Annex 6
– Examples of arrangements of the approval marks
– Photometric measurements
– Minimum requirements for conformity of production control procedures
– Minimum requirements for sampling by an inspector

3. APPLICATION FOR APPROVAL
3.1. The applicant for approval shall be submitted by the holder of the trade name or mark or by
his duly accredited representative.
At the choice of the applicant, it will specify that the device may be installed on the vehicle
with different inclinations of the reference axis in respect to the vehicle reference planes and
to the ground or rotate around its reference axis; these different conditions of installation
shall be indicated in the communication form. It shall specify:
3.1.1. whether the side-marker lamp is intended to emit amber or red light.
3.2. For each type of side-marker lamp the application shall be accompanied by:
3.2.1. Drawings in triplicate, sufficiently detailed to permit identification of the type of lamp and
showing geometrically in what position(s) it may be mounted on the vehicle; the axis of
observation to be taken as the axis of reference in the tests (horizontal angle H = 0°, vertical
angle V = 0°) the point to be taken as the centre of reference in the said tests; the vertical
and horizontal tangents to the illuminating surface and their distances from the centre of
reference of the lamp. The drawings shall show the position intended for the approval
number and the additional symbols in relation to the circle of the approval mark.
3.2.2. A brief technical description stating, in particular, with the exception of lamps with
non-replaceable light sources:
(a)
(b)
(c)
The category or categories of filament lamp(s) prescribed; this filament lamp category
shall be one of those contained in Regulation No. 37 and its series of amendments in
force at the time of application for type approval; and/or
The category or categories of LED light source(s) prescribed; this LED light source
category shall be one of those contained in Regulation No. 128 and its series of
amendments in force at the time of application for type approval; and/or
The light source module specific identification code.
3.2.3. Two samples; if the application is made for side-marker lamps which are not identical but
are symmetrical and suitable for mounting one on the left and one on the right side of the
vehicle and/or, alternatively, one towards the front and one towards the rear, the two
samples submitted may be identical and be suitable for mounting only on the right or only on
the left side of the vehicle and/or, alternatively, only towards the front or only towards the
rear.
3.2.4. In the case of a type of lamp differing only by the trade name or mark from a type that has
already been approved it shall be sufficient to submit:
3.2.4.1. A declaration by the lamp manufacturer that the type submitted is identical (except in the
trade name or mark) with and has been produced by the same manufacturer as, the type
already approved, the latter being identified by its approval code;
3.2.4.2. Two samples bearing the new trade name or mark or equivalent documentation.
3.2.5. In the case of a non-replaceable filament lamp(s) or light source module(s) equipped with
non-replaceable filament lamp(s), the documents according to Paragraph 6.5. of this
Regulation.

5.4. Every side-marker lamp conforming to a type approved under this Regulation shall bear, in
the space referred to in Paragraph 4.4. above, and in addition to the markings prescribed in
Paragraphs 4.2. and 4.3. or 4.4. respectively:
5.4.1. An international approval mark consisting of:
5.4.1.1. A circle surrounding the Letter "E" followed by the distinguishing number of the Country
which has granted the approval, and
5.4.1.2. The approval number prescribed in Paragraph 5.2. above.
5.4.2. The additional Symbol "SM1" or "SM2."
5.4.3. The two digits of the approval number which indicate the series of amendments in force on
the date of issue of the approval may be marked close to the above additional symbol.
5.4.4. On devices with reduced light distribution in conformity to Paragraph 2.5. in Annex 4 to this
Regulation a vertical arrow starting from a horizontal segment and directed downwards.
5.5. The marks and symbols mentioned in Paragraphs 5.4.1. to 5.4.3. above shall be indelible
and clearly legible even when the device is mounted on the vehicle.
5.6. Where grouped, combined or reciprocally incorporated lamps have been found to comply
with the requirements of several Regulations, a single international approval mark may be
applied provided that such lamps are not grouped, combined or reciprocally incorporated
with a lamp or lamps not satisfying any one of those Regulations.
5.6.1. The approval mark shall consist of a circle surrounding the Letter "E" followed by the
distinguishing number of the country which has granted the approval; an approval mark may
be located anywhere on the grouped, combined or reciprocally incorporated lamps provided
that:
5.6.1.1. It is visible after their installation;
5.6.1.2. No part of the grouped, combined or reciprocally incorporated lamps that transmits light can
be removed without at the same time removing the approval mark.
5.7. The identification symbol for each lamp appropriate to each Regulation under which
approval has been granted, together with the corresponding series of amendments
incorporating the most recent major technical amendments to the Regulation at the time of
issue of approval shall be marked;
5.7.1. Either on the appropriate light-emitting surface, or
5.7.2. In a group, in such a way that each lamp may be clearly identified (see three possible
models in Example 2 shown in Annex 3).
5.8. The size of the components of a single approval mark shall not be less than the minimum
size required for the smallest of the individual marks under which the approval was granted.

6.3.2. The light source module(s) shall be tamperproof.
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.
6.4. In the case of replaceable light source(s):
6.4.1. The side-marker lamp shall only be equipped with light source(s) approved according to
UN Regulation No. 37 and/or UN Regulation No. 128, provided that no restriction on the use
is made in UN Regulation No. 37 and its series of amendments in force at the time of
application for type approval or in UN Regulation No. 128 and its series of amendments in
force at the time of application for type approval.
6.4.2. The design of the device shall be such that the light source can be fixed in no other position
but the correct one.
6.4.3. The light source holder shall conform to the characteristics given in IEC Publication 60061.
The holder data sheet relevant to the category of light source used, applies.
6.5. In the case of non-replaceable filament lamp(s) or light source module(s) equipped with
non-replaceable filament lamp(s), the applicant shall annex to the type approval
documentation a report (by the light source manufacturer indicated in the type approval
documentation), acceptable to the Type Approval Authority, that demonstrates compliance
of these non-replaceable filament lamp(s) with the requirements as specified in
Paragraph 4.11. of IEC 60809, Edition 3.
7. INTENSITY OF LIGHT EMITTED
7.1. The intensity of the light emitted by each of the two samples submitted shall be:
Side-marker lamp category SM1 SM2
7.1.1. Minimum intensity In the axis of reference 4.0cd 0.6cd
Within the specified angular field, other than above 0.6cd 0.6cd
7.1.2. Maximum intensity Within the specified angular field 25.0cd 25.0cd
7.1.3. Angular field Horizontal ±45° ±30°
Vertical ±10° ±10°
7.1.4. In the Case of a Lamp Containing more than One Light Source.
7.1.5. Failure of a Single Lamp Containing more than One Light Source:
7.1.5.1. In a single lamp containing more than one light source, a group of light sources, wired so
that the failure of any one of them causes all of them to stop emitting light, shall be
considered to be one light source.

9. TEST PROCEDURE
9.1. All measurements, photometric and colorimetric shall be carried out with an uncoloured or
coloured standard light source of the category prescribed for the device, supplied with the
voltage:
(a)
(b)
In the case of filament lamps, that is necessary to produce the reference luminous
flux required for that category of filament lamp;
In the case of LED light sources of 6.75V or 13.5V; the luminous flux value produced
shall be corrected. The correction factor is the ratio between the objective luminous
flux and the mean value of the luminous flux found at the voltage applied;
(c) In the case of lamps with non-replaceable light sources: 6.75V and 13.5V
respectively;
(d)
(e)
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, 6.75V, 13.5V or 28.0V, respectively;
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.
9.4. The limits of the apparent surface in the direction of the reference axis of a light-signalling
device shall be determined.
10. MODIFICATION OF SIDE-MARKER LAMP TYPE AND EXTENSION OF APPROVAL
10.1. Any modification of a side-marker lamp type shall be notified to the administrative authority
which approved the lamp. The authority may then either:
10.1.1. Consider that the modifications are unlikely to have an appreciable adverse effect and that,
in any case, the side-marker lamp still meets the requirements; or
10.1.2. Require a further test report from the Technical Service responsible for conducting the tests.
10.2. Confirmation or refusal of approval, specifying the alterations, shall be communicated by the
procedure specified in Paragraph 5.3. above to the Parties to the Agreement which apply
this Regulation.

14. NAMES AND ADDRESSES OF TECHNICAL SERVICES RESPONSIBLE FOR
CONDUCTING APPROVAL TESTS, AND OF TYPE APPROVAL AUTHORITIES
The Parties to the Agreement applying this Regulation shall communicate to the United
Nations secretariat the names and addresses of the Technical Services responsible for
conducting approval tests and of the Type Approval Authorities which grant approval and to
which communication forms certifying approval or extension or refusal or withdrawal of
approval, issued in other countries, are to be sent.
15. TRANSITIONAL PROVISIONS
15.1. As from the official date of entry into force of Supplement 3 to the Regulation, no
Contracting Party applying this Regulation shall refuse to grant type approval under this
Regulation as amended by Supplement 3 of the original version of the Regulation.
15.2. As from 24 months after the date of entry into force of Supplement 3 to the Regulation,
Contracting Parties applying this Regulation shall grant type approvals only if the type of
side marker lamp to be approved meets the requirements of this Regulation as amended by
Supplement 3 of the original version of the Regulation.
15.3. Contracting Parties applying this Regulation shall not refuse to grant extensions of approval
to this Regulation in its original form and the subsequent supplements.
15.4. Contracting Parties applying this Regulation shall continue to grant approvals to those types
of side marker lamps which comply with the requirements of this Regulation in its original
form and the subsequent supplements during the 12 months period which follows the date
of entry into force of Supplement 3 of the original version of this Regulation.
15.5. Type approvals granted under this Regulation earlier than 12 months after the date of entry
into force and all extensions of approvals, including those to this Regulation in its original
form and the subsequent supplements granted subsequently, shall remain valid indefinitely.
When the type of side marker lamp approved to this Regulation in its original form and the
subsequent supplements meets the requirements of this Regulation as amended by
Supplement 3 of the original version of the Regulation, the Contracting Party which granted
the approval shall notify the other Contracting Parties applying this Regulation thereof.
15.6. No Contracting Party applying this Regulation shall refuse a type of side-marker lamp
approved to Supplement 3 of the original version of the Regulation.
15.7. Until 36 months after the date of entry into force of Supplement 3 of the original version of
the Regulation, no Contracting Party applying this Regulation shall refuse a type of side
marker lamp approved to this Regulation in its original form and the subsequent
supplements.
15.8. Starting 36 months after the date of entry into force of Supplement 3 of the original version
of the Regulation, Contracting Parties applying this Regulation may refuse the sale of a type
of side marker lamp which does not meet the requirements of Supplement 3 of the original
version of the Regulation unless the side marker lamp is intended as a replacement for
fitting on vehicles in use.
15.9. Contracting Parties applying this Regulation shall continue to issue approvals for side
marker lamps on the basis of any previous supplement to the Regulation, provided that
these side marker lamps are intended as replacements for fitting to vehicles in use.

ANNEX 1
MINIMUM ANGLES REQUIRED FOR LIGHT DISTRIBUTION IN SPACE
Minimum vertical angles, SM1 and SM2:
The angle of 10° below the horizontal may be reduced to 5° in case of lamps intended to be installed
their H plane at a mounting height of less than 750mm above the ground.
Minimum horizontal angles, SM1:

ANNEX 2
COMMUNICATION CONCERNING THE APPROVAL OR REFUSAL OR EXTENSION
OR WITHDRAWAL OF APPROVAL OR PRODUCTION DEFINITIVELY
DISCONTINUED OF A TYPE OF SIDE-MARKER LAMP MARKED SM1/SM2
Maximum format: A4 (210 × 297mm))
issued by: Name of administration
.......................................................
.......................................................
.......................................................
concerning:
APPROVAL GRANTED
APPROVAL EXTENDED
APPROVAL REFUSED
APPROVAL WITHDRAWN
PRODUCTION DEFINITIVELY DISCONTINUED
of a type of side-marker lamp marked SM1/SM2 pursuant to Regulation No. 91
Approval No ......................................... Extension No .......................
1. Trade name or mark of the side-marker lamp: ....................................................................................
2. Manufacturer's name for the type of side-marker lamp: ......................................................................
..............................................................................................................................................................
3. Manufacturer's name and address: .....................................................................................................
..............................................................................................................................................................
4. If applicable, name and address of the manufacturer's representative: .............................................
..............................................................................................................................................................
5. Submitted for approval on: ..................................................................................................................
6. Technical service responsible for conducting approval tests: .............................................................
7. Date of test report: ...............................................................................................................................
8. Number of test report: .........................................................................................................................

ANNEX 3
EXAMPLES OF ARRANGEMENTS OF THE APPROVAL MARKS
Example 1(a)
The device bearing the approval mark shown above is a side-marker lamp, approved in the United
Kingdom (E11) pursuant to Regulation No. 91 under the number 216. The vertical arrow starting from a
horizontal segment and directed downwards indicates a permissible mounting height of equal to or less
than 750mm from the ground for this device.
Note: The number mentioned close to the Symbol "SM1" indicates that the approval was granted in
accordance with the requirements of this Regulation in its original form.
Example 1 (b)

A rear direction indicator lamp of Category 2a approved in accordance with
Regulation No. 6, 01 series of amendments;
A rear position lamp (R) approved in accordance with Regulation No. 7, 01 series of
amendments;
A rear fog lamp (F) approved in accordance with Regulation No. 38, 01 series of
amendments;
A reversing lamp (AR) approved in accordance with Regulation No. 23, 01 series of
amendments;
A stop lamp (S1) approved in accordance with Regulation No. 7, 01 series of amendments;
A side-marker lamp (SM1) approved in conformity with the present Regulation in its original
form.
Example 3
Lamp Reciprocally Incorporated as Grouped with a Headlamp
The above example corresponds to the marking of a lens intended to be used in different types of
headlamps, namely:
Either:
or:
a headlamp with a passing beam designed for right-hand and left-hand traffic and a driving
beam with a maximum intensity comprised between 86,250 and 101,250cd, approved in
Germany (E1) in accordance with the requirements of Regulation No. 8 as amended by the
02 series of amendments; which is reciprocally incorporated with a front direction indicator
approved in accordance with the 01 series of amendments to Regulation No. 6 and grouped
with a side-marker lamp in accordance with this Regulation in the original form.
a headlamp with a passing beam designed for right-hand and left-hand traffic and a driving
beam approved in Germany (E1) in accordance with the requirements of Regulation No. 1 as
amended by the 01 series of amendments, which is reciprocally incorporated with the same
front direction indicator and the same side-marker lamp as above.
or even: either of the above-mentioned headlamps approved as a single lamp.

ANNEX 4
PHOTOMETRIC MEASUREMENTS
1. MEASUREMENT METHODS
1.1 During photometric measurement stray reflections shall be avoided by appropriate marking.
1.2 In case the results of measurements should be challenged, measurements shall be carried
out in such a way as to meet the following requirements:
1.2.1 The distance of measurement shall be such that the law of the inverse of the square of the
distance is applicable;
1.2.2 The measuring equipment shall be such that the angular aperture of the receiver viewed
from the reference centre of the lamp is comprised between 10min and 1%;
1.2.3 The intensity requirement for a particular direction of observation shall be deemed to be
satisfied if that requirement is met in a direction deviating by not more than one-quarter of a
degree from the direction of observation.
1.3. In the case where the device may be installed on the vehicle in more than one or in a field of
different positions the photometric measurements shall be repeated for each position or for
the extreme positions of the field of the reference axis specified by the manufacturer.
1.4 The direction H = 0° and V = 0° corresponds to the reference axis. (On the vehicle it is
horizontal, perpendicular to the median longitudinal plane of the vehicle and oriented in the
required direction of visibility). It passes through the centre of reference.
2. TABLES OF LIGHT DISTRIBUTION
2.1 SM1 category of side-marker lamps
2.1.1 Minimum values:
0.6cd at any point other than the reference axis, at which it shall be 4.0cd.
2.1.2 Maximum values:
25.0cd at any point

3.2 For replaceable light sources:
When equipped with light sources at 6.75V, 13.5V or 28.0V, the luminous intensity values
produced shall be corrected. For filament lamps the correction factor is the ratio between
the reference luminous flux and the mean value of the luminous flux found at the voltage
applied (6.75V, 13.5V or 28.0V).
For LED light sources the correction factor is the ratio between the objective luminous flux
and the mean value of the luminous flux found at the voltage applied (6.75V, 13.5V or
28.0V).
The actual luminous fluxes of each light source used shall not deviate more than ±5% from
the mean value. Alternatively and in case of filament lamps only, a standard filament lamp
may be used in turn, in each of the individual positions, operated at its reference flux, the
individual measurements in each position being added together.
3.3. For any signalling lamp except those equipped with filament lamp(s), the luminous
intensities, measured after one minute and after 30min of operation, shall comply with the
minimum and maximum requirements. The luminous intensity distribution after 1min of
operation can be calculated from the luminous intensity distribution after 30min of operation
by applying at each test point the ratio of luminous intensities measured at HV after 1min
and after 30min of operation.

2.1. Nature of Tests
Tests of conformity in this Regulation shall cover the photometric and colorimetric
characteristics.
2.2. Methods Used in Tests
2.2.1. Tests shall generally be carried out in accordance with the methods set out in this
Regulation.
2.2.2. In any test of conformity carried out by the manufacturer, equivalent methods may be used
with the consent of the Type Approval Authority responsible for approval tests. The
manufacturer is responsible for proving that the applied methods are equivalent to those laid
down in this Regulation.
2.2.3. The application of Paragraphs 2.2.1. and 2.2.2. requires regular calibration of test apparatus
and its correlation with measurements made by a Type Approval Authority.
2.2.4. In all cases the reference methods shall be those of this Regulation, particularly for the
purpose of administrative verification and sampling.
2.3. Nature of Sampling
Samples of side-marker lamps shall be selected at random from the production of a uniform
batch. A uniform batch means a set of side-marker lamps of the same type, defined
according to the production methods of the manufacturer.
The assessment shall in general cover series production from individual factories. However,
a manufacturer may group together records concerning the same type from several
factories, provided these operate under the same quality system and quality management.
2.4. Measured and Recorded Photometric Characteristics
The sampled lamp shall be subjected to photometric measurements for the minimum values
at the points listed in Annex 4 and the required chromaticity coordinates.
2.5. Criteria Governing Acceptability
The manufacturer is responsible for carrying out a statistical study of the test results and for
defining, in agreement with the Type Approval Authority, criteria governing the acceptability
of his products in order to meet the specifications laid down for verification of conformity of
products in Paragraph 11.1. of this Regulation.
The criteria governing the acceptability shall be such that, with a confidence level of 95%,
the minimum probability of passing a spot check in accordance with Annex 6 (first sampling)
would be 0.95.

3. FIRST REPEATED SAMPLING
A sample of four lamps is selected at random from stock manufactured after alignment.
The first sample of two is marked C, the second sample of two is marked D.
3.1. The conformity of mass-produced lamps shall not be contested if the deviation of any
specimen of samples C and D (all four lamps) is not more than 20%.
In the case, that the deviation of both lamps of sample C is not more than 0% the
measurement can be closed.
3.2. The conformity of mass-produced lamps shall be contested if the deviation of at least:
3.2.1. One specimen of samples C or D is more than 20% but the deviation of all specimen of
these samples is not more than 30%.
The manufacturer shall be requested again to bring his production in line with the
requirements (alignment).
A second repeated sampling according to Paragraph 4. below shall be carried out within two
months' time after the notification. The samples C and D shall be retained by the Technical
Service until the entire Conformity of Production process is finished.
3.2.2. One specimen of samples C and D is more than 30%.
In this case the approval shall be withdrawn and Paragraph 5. below shall be applied.
4. SECOND REPEATED SAMPLING
A sample of four lamps is selected at random from stock manufactured after alignment.
The first sample of two is marked E, the second sample of two is marked F.
4.1. The conformity of mass-produced lamps shall not be contested if the deviation of any
specimen of samples E and F (all four lamps) is not more than 20%.
In the case, that the deviation of both lamps of sample E is not more than 0%, the
measurement can be closed.
4.2. The conformity of mass-produced lamps shall be contested if the deviation of at least one
specimen of samples E or F is more than 20%.
In this case the approval shall be withdrawn and Paragraph 5. below shall be applied.
5. APPROVAL WITHDRAWN
Approval shall be withdrawn according to Paragraph 12. of this Regulation.
Side Marker Lamps.