Regulation No. 6-01

Name:Regulation No. 6-01
Description:Direction Indicator Lamps.
Official Title:Uniform Provisions Concerning the Approval of: Direction Indicators for Power-driven Vehicles and their Trailers.
Country:ECE - United Nations
Date of Issue:1967-05-22
Amendment Level:01 Series, Supplement 26
Number of Pages:40
Vehicle Types:Agricultural Tractor, Bus, Car, Component, Heavy Truck, Light Truck, Motorcycle, Trailer
Subject Categories:Lighting and Light Signalling Equipment
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Keywords:

regulation, approval, amendments, series, direction, light, lamp, supplement, lamps, force, indicator, date, entry, intensity, source, approved, type, category, luminous, case, requirements, device, paragraph, indicators, accordance, annex, control, variable, mark, number, vehicle, granted, marking, part, contracting, applying, reference, categories, conformity, interdependent, time, minimum, manufacturer, photometric, incorporated, reciprocally, parties, voltage, sources, rear

Text Extract:

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E/ECE/324
) Add.5/Rev.6/Amend.1
E/ECE/TRANS/505 )
June 22, 2015
STATUS OF UNITED NATIONS REGULATION
ECE 6-01
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
DIRECTION INDICATORS FOR POWER-DRIVEN VEHICLES AND THEIR TRAILERS
Incorporating:
Supplement 4 to the 01 series of amendments
Date of Entry into Force: 02.12.92
Supplement 5 to the 01 series of amendments
Date of Entry into Force: 13.01.93
Corr. 2 to the 01 series of amendments
Dated: 01.07.92
Supplement 6 to the 01 series of amendments
Date of Entry into Force: 11.02.96
Supplement 7 to the 01 series of amendments
Date of Entry into Force: 03.09.97
Supplement 8 to the 01 series of amendments
Date of Entry into Force: 24.07.00
Supplement 9 to the 01 series of amendments
Date of Entry into Force: 26.12.00
Supplement 10 to the 01 series of amendments
Date of Entry into Force: 26.08.02
Corr. 1 to Supplement 10 to the 01 series of amendments
Dated: 12.11.03
Supplement 11 to the 01 series of amendments
Date of Entry into Force: 26.02.04
Corr. 1 to Supplement 11 to the 01 series of amendments
Dated: 26.02.04
Supplement 12 to the 01 series of amendments
Date of Entry into Force: 09.11.05
Supplement 13 to the 01 series of amendments
Date of Entry into Force: 04.07.06
Supplement 14 to the 01 series of amendments
Date of Entry into Force: 02.02.07
Supplement 15 to the 01 series of amendments
Date of Entry into Force: 11.06.07
Supplement 16 to the 01 series of amendments (including Erratum)
Date of Entry into Force: 11.07.08
Corr. 1 to Supplement 16 to the 01 series of amendments
Dated: 30.04.09
Corr. 2 to Supplement 16 to the 01 series of amendments
Dated: 28.04.11
Supplement 17 to the 01 series of amendments
Date of Entry into Force: 15.10.08
Supplement 18 to the 01 series of amendments
Date of Entry into Force: 24.10.09
Corr. 1 to Supplement 18 to the 01 series of amendments
Dated: 03.03.10
Corr. 2 to Supplement 18 to the 01 series of amendments
Dated: 16.06.10
Corr. 3 to Supplement 18 to the 01 series of amendments
Dated: 28.04.11
Supplement 19 to the 01 series of amendments
Date of Entry into Force: 19.08.10
Supplement 20 to the 01 series of amendments
Date of Entry into Force: 09.12.10
Supplement 21 to the 01 series of amendments
Date of Entry into Force: 23.06.11
Corr. 1 to Revision 5 of the Regulation
Dated: 14.11.12
Supplement 22 to the 01 series of amendments
Date of Entry into Force: 26.07.12
Supplement 23 to the 01 series of amendments
Date of Entry into Force: 15.07.13
Supplement 24 to the 01 series of amendments
Date of Entry into Force: 03.11.13
Supplement 25 to the 01 series of amendments
Date of Entry into Force: 09.10.14
Supplement 26 to the 01 series of amendments
Date of Entry into Force: 15.06.15

REGULATION
REGULATION No. 6-01
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF DIRECTION
INDICATORS FOR POWER-DRIVEN VEHICLES AND THEIR TRAILERS
CONTENTS
0.
Scope
1.
Definitions
2.
Application for approval
3.
Markings
4.
Approval
5.
General specifications
6.
Intensity of light emitted
7.
Test procedure
8.
Colour of light emitted
9.
Modifications of a type of direction indicator for motor vehicles and their trailers and extension of
approval
10.
Conformity of production
11.
Penalties for non-conformity of production
12.
Production definitely discontinued
13.
Names and addresses of Technical Services responsible for conducting approval tests, and of
Type Approval Authorities
14.
Transitional provisions
ANNEXES
Annex 1 – Categories of direction indicators: Minimum angles required for light distribution in space
of these categories of direction indicators
Annex 2
Annex 3
Annex 4
Annex 5
Annex 6
– Communication
– Examples of arrangements of the approval marks
– Photometric measurements
– Minimum requirements for conformity of production control procedures
– Minimum requirements for sampling by an inspector

2. APPLICATION FOR APPROVAL
2.1. The application for approval of a type of direction indicator shall be submitted by the holder
of the trade name or mark or by his duly accredited representative. It shall specify to which
category or to which of the Categories 1, 1a, 1b, 2a, 2b, 5 or 6 according to Annex 1, the
direction indicator belongs and, if it belongs to Category 2, whether it has steady luminous
intensity (Category 2a) or whether it has variable luminous intensity (Category 2b) and if the
direction indicator may also be used in an assembly of two lamps of the same category. At
the choice of the applicant, it will also 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.
2.2. For each type of direction indicator the application shall be accompanied by the following:
2.2.1. Drawings, in triplicate, sufficiently detailed to permit identification of the type and category
and showing geometrically the following:
(a)
(b)
(c)
(d)
In what position(s) the direction indicator 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°); and the point to be taken as the centre of reference in the said
tests.
The geometrical conditions of installation of the device(s) that meet(s) the
requirements of Paragraph 6. below.
In the case of an interdependent lamp system, the interdependent lamp or the
combination of interdependent lamps that fulfil the requirements of Paragraph 5.7,
Paragraph 6.1. below and of Annex 4 to this Regulation.
The drawings shall show the position intended for the approval number and the
additional symbols in relation to the circle of the approval mark.
2.2.2. 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.
2.2.3. For a direction indicator of Category 2b, a concise description of the variable intensity
control, an arrangement diagram and a specification of the characteristics of the system
ensuring the two levels of intensity;
2.2.4. For a direction indicator lamp of Categories 1, 1a, 1b, 2a and 2b, information regarding
activation of the signal according to Paragraphs 5.6. and 6.2.2. below.

4. APPROVAL
4.1. General
4.1.1. If the two devices submitted for approval in pursuance of Paragraph 2.2.4. above, meet the
requirements of this Regulation, approval shall be granted. All the devices of an
interdependent lamp system shall be submitted for type approval by the same applicant.
4.1.2. Where grouped, combined or reciprocally incorporated lamps have been found to comply
with the requirements of several Regulations annexed to the 1958 Agreement, 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 these
Regulations.
4.1.3. An approval number shall be assigned to each type approved. Its first two digits (at
present 01, corresponding to the 01 series of amendments which entered into force on
June 27, 1987) shall indicate the series of amendments incorporating the most recent major
technical amendments made to the Regulation at the time of issue of the approval. The
same Contracting Party shall not assign the same number to another type of device covered
by this Regulation. Direction indicators of different categories may be marked with a single
approval number when they form one assembly.
4.1.4. Notice of approval or of extension or refusal or withdrawal of approval or production
definitely discontinued of a type of device pursuant to this Regulation shall be
communicated to the Parties to the 1958 Agreement which apply this Regulation, by means
of a form conforming to the model in Annex 2 to this Regulation.
4.1.5. Every device conforming to a type approved under this Regulation shall bear in the space
referred to in Paragraph 3.3. above, and in addition to the markings prescribed in
Paragraphs 3.1. and 3.2. or 3.4. above respectively, an approval mark as described in
Paragraphs 4.2. and 4.3. below.
4.2. Composition of the Approval Mark
The approval mark shall consist of:
4.2.1. An international approval marking, comprising
4.2.1.1. A circle surrounding the Letter "E" followed by the distinguishing number of the country
which has granted approval;
4.2.1.2. The approval number prescribed in Paragraph 4.1.3. above.
4.2.2. The following additional symbol (or symbols):
4.2.2.1. One or more of the Numbers: 1, 1a, 1b, 2a, 2b, 5 or 6, according to whether the device
belongs to one or more Categories 1, 1a, 1b, 2a, 2b, 5 or 6 for which approval is sought in
accordance with Paragraph 2.1. above;

4.3.1.5. Figure 4 in Annex 3 to this Regulation gives examples of an approval mark with the
above-mentioned additional symbols.
4.3.2. Grouped, Combined or Reciprocally Incorporated Lamps
4.3.2.1. 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 consisting of a circle surrounding the Letter "E" followed by the distinguishing
number of the country which has granted the approval, and an approval number. This
approval mark may be located anywhere on the grouped, combined or reciprocally
incorporated lamps, provided that:
4.3.2.1.1. It is visible after the installation of the lamps;
4.3.2.1.2. 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.
4.3.2.2. An 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 the
approval and, if necessary, the required arrow shall be marked:
4.3.2.2.1. Either on the appropriate light-emitting surface;
4.3.2.2.2. Or in a group, in such a way that each lamp of the grouped, combined or reciprocally
incorporated lamps may be clearly identified.
4.3.2.3. 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 by the Regulation under which
approval has been granted.
4.3.2.4. An approval number shall be assigned to each type approved. The same Contracting Party
may not assign the same number to another type of grouped, combined or reciprocally
incorporated lamps covered by this Regulation.
4.3.2.5. Annex 3, Figure 2, to this Regulation gives examples of the arrangement of the approval
marks for grouped, combined or reciprocally incorporated lamps with all the
above-mentioned additional symbols.
4.3.3. Lamps Reciprocally Incorporated with Other Lamps of Which the Lens May Also be Used
for Other Types of Headlamps
The provisions laid down in Paragraph 4.3.2. above are applicable.
4.3.3.1. In addition, where the same lens is used, the latter may bear the different approval marks
relating to the different types of headlamps or units of lamps, provided that the main body of
the headlamp, even if it cannot be separated from the lens, also comprises the space
described in Paragraph 3.3. above and bears the approval marks of the actual functions.
If different types of headlamps comprise the same main body, the latter may bear the
different approval marks.
4.3.3.2. Annex 3, Figure 3, to this Regulation gives examples of approval marks for lamps
reciprocally incorporated with a headlamp.

5.6. For direction indicator lamps of categories 1, 1a, 1b, 2a or 2b the flash may be produced by
sequential activation of their light sources if the following conditions are met:
(a)
(b)
(c)
(d)
(e)
Each light source, after its activation, shall remain lit until the end of the ON cycle;
The sequence of activation of the light sources shall proceed in a uniform progressive
manner from inboard towards the outboard edge of the apparent surface;
It shall be one continuous line with no repeating alternation in the vertical direction
(e.g. no waves).
The variation shall finish no more than 200ms after the beginning of the ON cycle;
For the orthogonal projection in the direction of the axis of reference of a rectangle,
circumscribing the apparent surface of the direction indicator shall have its longer
sides parallel to the H-plane, the ratio of the horizontal to the vertical sides shall not
be less than 1.7.
Compliance to the conditions mentioned above shall be verified in flashing mode.
5.7. An interdependent lamp system shall meet the requirements when all its interdependent
lamps are operated together.
However, if the interdependent lamp system providing the rear direction indicator function is
partly mounted on the fixed component and partly mounted on a movable component, the
interdependent lamp(s) specified by the Applicant shall meet the geometric visibility,
colorimetric and photometric requirement, at all fixed positions of the movable
component(s). This does not apply to interdependent direction indicator lamp(s) intended for
fitting on vehicle(s) where, to fulfil or complete the geometric visibility angle, additional
lamps are activated when the movable component is in any fixed open position, provided
that these additional lamps satisfy all the position, photometric and colorimetric
requirements applicable to the direction indicator lamps installed on the movable
component.

6.2.2. A signal for activation of the tell-tale prescribed in Paragraph 6.5.8. of Regulation No. 48
shall be produced if:
(a)
(b)
(c)
any one light source has failed, or
in the case of a lamp designed for only two light sources, the intensity in the axis of
reference is less than 50% of the minimum intensity, or
as a consequence of a failure of one or more light sources, the intensity in one of the
following directions as indicated in Annex 4 to this Regulation is less than the
minimum intensity required:
(i)
(ii)
(iii)
H=0°, V=0°
H=20° to the outside of the vehicle, V=+5°
H=10° to the inside of the vehicle, V=0°.
6.3. Outside the reference axis, within the angular fields specified in the arrangement diagrams
in Annex 1 to this Regulation, the intensity of the light emitted by each of the two devices
supplied shall:
6.3.1. In each direction corresponding to the points in the relevant table of luminous-intensity
distribution reproduced in Annex 4 to this Regulation, be not less than the minimum
specified in Paragraph 6.1. above multiplied by the percentage specified in the said table for
the direction in question;
6.3.1.1. In divergence from Paragraphs 6.3. and 6.3.1. above, for categories 5 direction indicators,
to the rear, a minimum value of 0.6 cd is required throughout the fields specified in Annex 1;
6.3.2. In no direction within the area from which the indicator lamp is visible, exceed the maximum
specified in Paragraph 6.1. above;
6.3.3. Moreover,
6.3.3.1. Throughout the fields defined in the diagrams in Annex 1, the intensity of the light emitted
shall be not less than 0.7cd for devices of Category 1b, not less than 0.3cd for devices of
Categories 1, 1a, 2a, and for those of Category 2b by day; it shall not be less than 0.07cd
for devices of Category 2b by night;
6.3.3.2. The provisions of Paragraph 2.2. of Annex 4 to this Regulation on local variations of
intensity shall be observed.

7. TEST PROCEDURE
7.1. All measurements, photometric and colorimetric, shall be made:
7.1.1. In the case of a lamp with replaceable light source, if not supplied by an electronic light
source control gear or a variable intensity control, 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 lamp(s), it is necessary to produce the reference luminous flux
required for that category of filament lamp;
In the case of LED light source(s) of 6.75V, 13.5V or 28.0V; 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.
7.1.2. In the case of a lamp equipped with non-replaceable light sources (filament lamps and
other), at 6.75V, 13.5V or 28.0V respectively.
7.1.3. In the case of a system that uses an electronic light source control gear or a variable
intensity control, 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.
7.1.4. In the case of a system that uses an electronic light source control gear or a variable
intensity control, not being part of the lamp with the voltage declared by the manufacturer
applied to the input terminals of the lamp.
7.2. However, in the case of a direction indicator of Category 2b operated by a variable intensity
control to obtain variable luminous intensity, photometric measurements shall be performed
according to the applicant's description.
7.3. The test laboratory shall require from the manufacturer the light source control gear or a
variable intensity control needed to supply the light source and the applicable functions.
7.4. The voltage to be applied to the lamp shall be noted in the communication form in Annex 2
of this Regulation.
7.5. The limits of the apparent surface in the direction of the reference axis of a direction
indicator shall be determined. However, in the case of Category 5 and 6 direction indicators,
the limits of the light emitting surface shall be determined.
8. COLOUR OF LIGHT EMITTED
The colour of the light emitted inside the field of the light distribution grid defined in
Paragraph 2 of Annex 4 shall be amber. Outside this field, no sharp variation of colour shall
be observed. To check these colorimetric characteristics, the test procedure described in
Paragraph 7 of this Regulation shall be applied. These requirements shall also apply within
the range of variable luminous intensity produced by direction indicators of Category 2b.
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 7.1 of this Regulation.

12. PRODUCTION DEFINITELY DISCONTINUED
If the holder of the approval completely ceases to manufacture a device approved in
accordance with this Regulation, he shall so inform the Type Approval Authority which
granted the approval. Upon receiving the relevant communication, that Authority shall inform
thereof the other Parties to the 1958 Agreement applying this Regulation by means of a
communication form conforming to the model in Annex 2 to this Regulation.
13. NAMES AND ADDRESSES OF TECHNICAL SERVICES RESPONSIBLE FOR
CONDUCTING APPROVAL TESTS, AND OF TYPE APPROVAL AUTHORITIES
The Contracting Parties to the 1958 Agreement which apply 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 forms certifying approval or extension or refusal or
withdrawal of approval, issued in other countries, are to be sent.
14. TRANSITIONAL PROVISIONS
14.1. As from the official date of entry into force of Supplement 8 to the 01 series of amendments,
no Contracting Party applying this Regulation shall refuse to grant approval under this
Regulation as amended by Supplement 8 to the 01 series of amendments.
14.2. As from 24 months after the date of entry into force, Contracting Parties applying this
Regulation shall grant approvals only if the type of direction indicator to be approved meets
the requirements of this Regulation as amended by Supplement 8 to the 01 series of
amendments.
14.3. Contracting Parties applying this Regulation shall not refuse to grant extensions of approval
to the preceding series of amendments to this Regulation.
14.4. Contracting Parties applying this Regulation shall continue to grant approvals to those types
of direction indicators which comply with the requirements of this Regulation as amended by
the preceding series of amendments during the 12 months period which follows the date of
entry into force of Supplement 8 to the 01 series of amendments.
14.5. Approvals granted under this Regulation earlier than 12 months after the date of entry into
force and all extensions of approvals, including those to a preceding series of amendments
to this Regulation granted subsequently, shall remain valid indefinitely. When the type of
direction indicator approved to the preceding series of amendments meets the requirements
of this Regulation as amended by Supplement 8 to the 01 series of amendments, the
Contracting Party which granted the approval shall notify the other Contracting Parties
applying this Regulation thereof.
14.6. No Contracting Party applying this Regulation shall refuse a type of direction indicator
approved to Supplement 8 to the 01 series of amendments to this Regulation.
14.7. Until 36 months after the date of entry into force of Supplement 8 to the 01 series of
amendments to this Regulation, no Contracting Party applying this Regulation shall refuse a
type of direction indicator approved to the preceding series of amendments to this
Regulation.

ANNEX 1
CATEGORIES OF DIRECTION INDICATORS:
MINIMUM ANGLES REQUIRED FOR LIGHT DISTRIBUTION IN SPACE OF
THESE CATEGORIES OF DIRECTION INDICATORS
In all cases, the minimum vertical angles of light distribution in space of direction indicator lamps are 15°
above and 15° below the horizontal except:
(a)
(b)
(c)
Direction indicator lamps intended to be installed with the H plane of the lamp at a mounting
height of less than 750mm above the ground, for which they are 15° above and 5° below the
horizontal;
Optional direction indicator lamps intended to be installed with the H plane of the lamp at a
mounting height of more than 2,100mm above the ground, for which they are 5° above and 15°
below the horizontal;
Direction indicator lamps of Category 6, for which they are 30° above and 5° below the
horizontal.
Minimum horizontal visibility angles
Direction indicators for the front of the vehicle
Category 1:
Category 1a:
Category 1b:
for use at a distance not less than 40mm from the dipped-beam headlamp and/or the
front fog lamp;
for use at a distance greater than 20mm but less than 40mm from the dipped-beam
headlamp and/or the front fog lamp;
for use at a distance less than or equal to 20mm from the dipped-beam headlamp
and/or the front fog lamp.
On and above the H plane for
all lamps.
Under the H plane for lamps
intended for M , M , N or
N Category of vehicles

Categories 5 and 6:
Supplementary side direction indicators for use on a vehicle also equipped with
Categories 1, 1a or 1b and 2a or 2b direction indicators.

9. Concise description:
Category: 1, 1a, 1b, 2a, 2b, 3, 4, 5, 6
Number, category: ..........................................................................................................................
Function(s) produced by an interdependent lamp forming part of an interdependent lamps
system: ............................................................................................................................................
Voltage and wattage: .....................................................................................................................
Light source module specific identification code: ...........................................................................
Only for limited mounting height of equal to or less than 750mm above the ground ....... yes/no
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
(b) Being not part of the lamp: yes/no
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): .............................................................................................................................................
Variable luminous intensity: yes/no
Sequential activation of light sources
(see Paragraph 5.6. of this Regulation): yes/no
10. Position of the approval mark: ...............................................................................................................
11. Reason(s) for extension (if applicable): ................................................................................................
12. Approval granted/extended/refused/withdrawn: ................................................................................
13. Place: .....................................................................................................................................................
14. Date: .......................................................................................................................................................
15. Signature: ...............................................................................................................................................
16. The list of documents deposited with the Type Approval Authority which has granted approval is
annexed to this communication and may be obtained on request. .....................................................

Simplified marking of grouped, combined or reciprocally incorporated
lamps when two or more lamps are part of the same assembly
Model A
Model B
Model C
Figure 2
The Vertical and Horizontal Lines Schematise the Shape of the Light-signalling Device.
These are not part of the approval mark.

Figure 2 Continued

The main body of the headlamp shall bear the only valid approval number, for instance:
Figure 3
Lamp Reciprocally Incorporated with a Headlamp
The above example corresponds to the marking of a lens intended to be used in different types of lamps.
The approval marks indicate that the device was approved in Spain (E9) under approval number 1432
and comprises:
A rear fog lamp (F) approved in accordance with Regulation No. 38 in its original version,
A rear direction indicator lamp of Category 2a approved in accordance with the 01 series of
amendments to Regulation No. 6,
A reversing lamp (AR) approved in accordance with Regulation No. 23 in its original version,
A red rear position (side) lamp (R) approved in accordance with the 02 series of amendments to
Regulation No. 7,
A stop-lamp with one level of illumination (S1) approved in accordance with the 02 series of
amendments to Regulation No. 7.
MD E3 17325
Light Source Modules
The light source module bearing the identification code shown above has been approved together with a
lamp approved in Italy (E3) under approval number 17325.

ANNEX 4
PHOTOMETRIC MEASUREMENTS
1. MEASUREMENT METHODS
1.1. During photometric measurements, stray reflections shall be avoided by appropriate masking.
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 light is comprised between 10' 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.
2. TABLE OF STANDARD LIGHT DISTRIBUTION IN SPACE FOR DIRECTION INDICATOR
LAMPS OF CATEGORIES 1, 1a, 1b, 2a, 2b

3. PHOTOMETRIC MEASUREMENT OF LAMPS
The photometric performance shall be checked:
3.1. For Non-replaceable Light Sources (Filament Lamps and Other);
with the light sources present in the lamp, in accordance with the relevant sub-paragraph of
Paragraph 7.1. of this Regulation.
3.2. For Replaceable Light Source(s):
when equipped with light source(s) 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 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 direction indicator lamp except those equipped with filament lamp(s), the luminous
intensities measured after one minute and after 30min of operation in flashing mode (f = 1.5Hz,
duty factor 50%), shall comply with the minimum and maximum requirements. The luminous
intensity distribution after one minute of operation can be calculated by applying at each test
point the ratio of luminous intensity measured in HV after 1min and after 30min of operation as
above described.

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. above 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 direction indicators shall be selected at random from the production of a uniform
batch. A uniform batch means a set of direction indicators 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 10.1. 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.

2.1.1.2. Sample B
B1: both direction indicators 0%
2.1.2. or if the conditions of Paragraph 1.2.2.above for Sample A are fulfilled.
2.2. The Conformity is Contested
2.2.1. Following the sampling procedure shown in Figure 1 of this Annex the conformity of
mass-produced direction indicators shall be contested and the manufacturer requested to make
his production meet the requirements (alignment) if the deviations of the measured values of
the direction indicators are:
2.2.1.1. Sample A
A3:
one direction indicator not more than
20%
one direction indicator more than
20%
but not more than
30%
2.2.1.2. Sample B
B2:
in the case of A2
one direction indicator more than
0%
but not more than
20%
one direction indicator not more than
20%
B3:
in the case of A2
one direction indicator
0%
one direction indicator more than
20%
but not more than
30%
2.2.2. or if the conditions of Paragraph 1.2.2. above for Sample A are not fulfilled.
2.3. Approval Withdrawn
Conformity shall be contested and Paragraph 11 applied if, following the sampling procedure in
Figure 1 of this Annex, the deviations of the measured values of the direction indicators are:
2.3.1. Sample A
A4:
one direction indicator not more than
20%
one direction indicator more than
30%
A5: both direction indicators more than 20%
2.3.2. Sample B
B4:
in the case of A2
one direction indicator more than
0%
but not more than
20%
one direction indicator more than
20%

3.3. Approval Withdrawn
Conformity shall be contested and Paragraph 11. of this Regulation applied if, following the
sampling procedure in Figure 1 of this Annex, the deviations of the measured values of the
direction indicators are:
3.3.1. Sample C
C3:
one direction indicator not more than
20%
one direction indicator more than
20%
C4: both direction indicators more than 20%
3.3.2. Sample D
D3:
in the case of C2
one direction indicator 0 or more than
0%
one direction indicator more than
20%
3.3.3. or if the conditions of Paragraph 1.2.2. above for Samples C and D are not fulfilled.

Direction Indicator Lamps.