Regulation 5 of the Economic Commission for Europe of the United Nations (UN/ECE): Uniform provisions for the approval of motor vehicle "sealed beam" headlamps (SB) emitting a European asymmetrical passing beam or a driving beam or both
Date: 2001-05-14
Institutions: United Nations Economic Commission for Europe
Subjects: European standard, approval, motor car, signalling device, technical regulations, vehicle parts

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Regulation 5 of the Economic Commission for Europe of the United Nations (UN/ECE): Uniform
provisions for the approval of motor vehicle ‘sealed beam’ headlamps (SB) emitting a European
asymmetrical passing beam or a driving beam or both

1.

SCOPE (1)

This Regulation applies to motor vehicle headlamps which may incorporate lenses of glass
or plastic material.

2.

DEFINITIONS

For the purpose of this Regulation,

2.1.

2.2.

2.3.

2.4.

‘Sealed beam’ headlamp unit (hereinafter termed ‘SB unit’), means a headlamp unit whose
components, comprising a reflector system, a lens system and one or more electrical light
sources are all parts of an integral whole which has been sealed in the course of manufacture
and which cannot be dismantled without rendering the unit completely unusable;

‘Lens’ means the outermost component of the headlamp (unit) which transmits light through
the illuminating surface;

‘Coating’ means any product or products applied in one or more layers to the outer face of a
lens;

SB units are considered to be of different types if they differ in one or more of the following
essentials of form or characteristics:

2.4.1.

Trade name or mark;

2.4.2.

Characteristics of the optical system;

2.4.3.

2.4.4.

Inclusion of additional components capable of altering the optical effects by reflection,
refraction, absorption and/or deformation during operation;

The rated voltage (the same approval number may be granted if the only change is of rated
voltage);

2.4.5.

The rated wattage;

2.4.6.

The shape of the filament(s);

2.4.7.

The kind the beam produced (passing beam, driving beam of both);

2.4.8.

Suitability for right-hand or left-hand traffic or for both traffic systems;

2.4.9.

The colour of the light emitted;

2.4.10.

The materials constituting the lens and coating, if any.

(1) Nothing in this regulation shall prevent a Party to the Agreement applying this Regulation from prohibiting the
combination of a headlamp incorporating a lens of plastic material approved under this Regulation with a
mechanical headlamp-cleaning device (with wipers).

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3.

3.1.

3.1.1.

3.1.2.

3.1.3.

APPLICATION FOR APPROVAL

The application for approval shall be submitted by the owner of the trade name or mark or
by his duly accredited representative. It shall specify:

Whether the SB unit is intended to provide both a passing beam and a driving beam, or only
one of these beams;

Whether, if the headlamp is intended to provide a passing beam, it is designed for both left-
hand and right-hand traffic or for either left-hand or right-hand traffic only;

Where applicable, that it is designed for agricultural or forest tractors and other slow-moving
vehicles (see annex 1).

3.2.

Every application for approval shall be accompanied by:

3.2.1.

Drawings in triplicate, sufficiently detailed to permit identification of the type and giving a
front view of the unit (with, if applicable, details of the lens moulding) and a cross-section;
also the filament(s) and shield(s) shall be shown on the drawings at a scale of 2 : 1 both in
front view and in side view; the drawing must show the position intended for the approval
number and the additional symbols in relation to the circle of the approval mark;

3.2.2.

Brief technical description;

3.2.3.

Samples as follows:

3.2.3.1.

For approval of an SB unit to emit white light: five samples;

3.2.3.2.

For approval of a unit to emit coloured light: one coloured-light sample, and five white-light
samples differing from the type submitted only in that the lens or filter is not coloured.

3.2.3.3.

In the case of SB units differing only in that they are designed to emit coloured light from a
type designed to emit white light and which has previously satisfied the tests in paragraphs 6,
7 and 8 below, it will be sufficient to submit one sample of the coloured-light type to
undergo only the tests given in paragraph 9.

3.2.4.

For the test of plastic material of which the lenses are made:

3.2.4.1.

thirteen lenses;

3.2.4.1.1.

six of these lenses may be replaced by six samples of material at least 60 × 80 mm in size,
having a flat or convex outer surface and a substantially flat area (radius of curvature not less
than 300 mm) in the middle measuring at least 15 × 15 mm;

3.2.4.1.2.

every such lens or sample of material shall be produced by the method to be used in mass
production;

3.2.4.2.

a reflector to which the lenses can be fitted in accordance with the manufacturer’s instructions.

3.3.

The materials making up the lenses and coatings, if any, shall be accompanied by the test
report of the characteristics of these materials and coatings if they have already been tested.

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3.4.

4.

4.1.

4.2.

4.3.

4.4.

4.5.

The competent authority shall verify the existence of satisfactory arrangements for ensuring
effective control of the conformity of production before type approval is granted.

MARKINGS (1)

SB units submitted for approval shall bear the trade name or mark of the applicant.

They shall comprise on the front lens, a space of sufficient size for the approval mark and
the additional symbols provided for in paragraph 5 below; the space must be shown on the
drawings referred to in paragraph 3.2.1 above.

They shall carry, either on the front lens or on the body, the values of the rated voltage and
of the rated wattage of the driving beam filament, followed by that of the rated wattage of
the passing beam filament, as applicable.

In the case of SB units designed to meet the requirements both of countries where the traffic
keeps to the right and of those where the traffic keeps to the left, the two settings of the unit
on the vehicle shall be marked by the letters ‘R/D’ for the position for right-hand traffic and
the letters ‘L/G’ for the position for left-hand traffic.

The trade names or marks and markings provided for under this paragraph 4 shall be clearly
legible and indelible.

5.

APPROVAL

5.1.

General

5.1.1.

5.1.2.

5.1.3.

5.1.4.

5.1.5

If all the headlamp type samples submitted in accordance with paragraph 3 above satisfy the
provisions of this Regulation, approval shall be granted.

Where grouped, combined or reciprocally incorporated lamps satisfy the requirements of
more than one Regulation, a single international approval mark may be affixed provided that
each of the grouped, combined or reciprocally incorporated lamps satisfies the provisions
applicable to it.

An approval number shall be assigned to each type approved. The same Contracting Party
may not assign the same number to another type of headlamp covered by this Regulation
except in the case of an extension of the approval to a device differing only in the colour of
the light emitted.

Notice of approval or of extension or refusal or withdrawal of approval or production
definitely discontinued, of a type of headlamp pursuant
to this regulation shall be
communicated to the Parties to the 1958 Agreement applying this Regulation, by means of
a form conforming to the model in annex 2 to this Regulation.

In addition to the mark prescribed in paragraph 4.1, an approval mark as described in
paragraphs 5.2 and 5.3 below shall be affixed in the spaces referred to in paragraph 4.2
above to every headlamp conforming to a type approved under this Regulation.

(1) In the case of SB units designed to meet the requirements of traffic moving on one side of the road only (either
right or left), it is further recommended that the area which can be occulted to prevent discomfort to users in a
country where traffic moves on the side of the road opposite to that of the country for which the SB unit was
designed should be outlined indelibly on the front lens. This marking is not necessary, however, where the area is
clearly apparent from the design.

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5.2.

Composition of the approval mark

The approval mark shall consist of:

5.2.1.

An international approval mark, comprising:

5.2.1.1.

A circle surrounding the letter ‘E’ followed by the distinguishing number of the country
which has granted approval (1);

5.2.1.2.

The approval number prescribed in paragraph 5.1.3 above.

5.2.2.

5.2.2.1.

5.2.2.2.

The following additional symbol (or symbols):

On SB headlamps meeting left-hand traffic requirements only, a horizontal arrow pointing
to the right of an observer facing the SB headlamp, i.e. to the side of the road on which the
traffic moves;

On SB headlamps designed to meet the requirements of both traffic systems by means of an
appropriate adjustment of the setting of the headlamp, a horizontal arrow with a head on
each end, the heads pointing respectively to the left and to the right;

5.2.2.3.

On headlamps meeting the requirements of this Regulation in respect of the passing beam
only, the letters ‘SC’;

5.2.2.4.

On headlamps meeting the requirements of this Regulation in respect of the driving beam
only, the letters ‘SR’;

5.2.2.5.

On headlamps meeting the requirements of this Regulation in respect of both the passing
beam and the driving beam, the letters ‘SCR’;

5.2.2.6.

On headlamps incorporating a lens of plastic material, the group of letters ‘PL’ shall be affixed
near the symbols prescribed in paragraphs 5.2.2.3 to 5.2.2.5 above;

5.2.2.7.

In every case the relevant operating mode during the next procedure according to
paragraph 1.1.1.1 of annex 5 and the allowed voltage(s) according to paragraph 1.1.1.2 of
annex 5 shall be stipulated on the approval certificates and on the communication form
transmitted to the countries which are Contracting Parties to the Agreement and which apply
this Regulation.

In the corresponding cases the device shall be marked as follows: On units meeting the
requirements of this Regulation which are so designed that the filament of the passing beam
shall not be lit simultaneously with that of any other lighting function with which it may be
reciprocally incorporated: An oblique stroke (/) shall be placed behind the passing lamp
symbol in the approval mark.

5.2.2.8.

The two digits of the approval number (at present 02) which indicate the series of
amendments incorporating the most recent major technical amendments made to the
Regulation and at the time of issue of the approval and, if necessary, the required arrow may
be marked close to the above additional symbols;

(1) 1 for Germany, 8 for the Czech and Slovak Federal Republic, 9 for Spain, 10 for Yugoslavia, 11 for the United
Kingdom, 12 for Austria, 13 for Luxembourg, 14 for Switzerland, 15 (vacant), 16 for Norway, 17 for Finland,
18 for Denmark, 19 for Romania, 20 for Poland, 21 for Portugal and 22 for the Russian Federation, 23 for
Greece, 24 (vacant), 25 for Croatia, 26 for Slovenia, 27 for Slovakia, 28 for Belarus, 29 for Estonia, 30 (vacant),
31 for Bosnia and Herzegovina, 32-36 (vacant), 37 for Turkey, 38-39 (vacant), and 40 for the former Yugoslav
Republic of Macedonia. Subsequent numbers will be assigned to other countries in the chronological order in
which they ratify or accede to the Agreement concerning the Adoption of Uniform Technical Conditions for
Wheeled, Equipments and parts which can be fitted and/ or be used on wheeled vehicle and the conditions for
Reciprocal Recognition of Approvals Granted on the basis of these prescriptions, and the numbers thus assigned
shall be communicated to the Contracting Parties to the Agreement by the Secretary-General of the United
Nations.

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5.2.2.9.

The marks and symbols referred to in paragraphs 5.2.1 and 5.2.2 above shall be clearly
legible and indelible even when the headlamp is fitted in the vehicle.

5.3.

Arrangement of the approval mark

5.3.1.

I n d e p e n d e n t l a m p s

Annex 4, figures 1 to 9, to this Regulation gives examples of arrangements of the approval
mark with the above-mentioned additional symbols.

5.3.2.

G r o u p e d , c o m b i n e d o r r e c i p r o c a l l y i n c o r p o r a t e d l a m p s

5.3.2.1. 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
affixed, 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:

5.3.2.1.1.

It is visible after their installation.

5.3.2.1.2. 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.

5.3.2.2.

The identification symbol for each lamp appropriate to each Regulation under which
together with the corresponding series of amendments
approval has been granted,
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:

5.3.2.2.1.

Either on the appropriate light-emitting surface,

5.3.2.2.2. Or in a group, in such a way that each of the grouped, combined or reciprocally incorporated

lamps may be clearly identified (see four possible examples in annex 4).

5.3.2.3.

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.

5.3.2.4.

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.

5.3.2.5.

Annex 4, figure 10, to this Regulation gives examples of arrangements of approval marks for
the above-mentioned
grouped, combined or reciprocally incorporated lamps with all
additional symbols.

5.3.3.

Lamps, the lens of which is used for different types of headlamps and which may be
reciprocally incorporated or grouped with other lamps. The provisions laid down in
paragraph 5.3.2 above are applicable.

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5.3.3.1.

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 4.2 above and bears the approval mark of the actual functions. If
different types of headlamps comprise the same main body, the latter may bear the different
approval marks.

5.3.3.2.

Annex 4, figure 11, to this Regulation gives examples of arrangements of approval marks
relating to the above case.

6.

6.1.

6.2.

6.2.1.

GENERAL SPECIFICATIONS

Each sample shall conform to the specifications set forth in this paragraph 6 and in
paragraphs 7 and 8 below, and, if necessary, paragraph 9.

SB units shall be so made as to retain their prescribed photometric characteristics and to
remain in good working order when in normal use, despite the vibrations to which they may
be subjected.

Headlamps shall be fitted with a device enabling them to be so adjusted on the vehicle as to
comply with the rules applicable to them. Such a device need not be fitted on the SB
headlamp inserts if the use of such inserts is confined to vehicles on which the headlamp
setting can be adjusted by other means. Where an SB headlamp providing a driving beam
and an SB headlamp providing a passing beam are assembled as exchangeable subunits to
form a composite unit the adjusting device shall enable each SB unit individually to be duly
adjusted.

6.2.2.

However, this will not apply to headlamp assemblies whose reflectors are indivisible. For this
type of assembly the requirements of paragraph 8 of this Regulation shall apply. In the case
where more than one light source is used to provide the main beam the combined main-
beam functions will be used to determine the maximum value of the illumination (Emax).

6.3.

6.4.

6.5.

6.6.

6.7.

The terminals shall only be in electrical connection with the appropriate filament or filaments
and shall be robust and firmly fixed to the unit.

If the units are circular they shall provide all the physical features and electrical connections
shown in one of the plates SB2-SB7 in annex 4 and shall be made to the dimensions in that
plate.

SB units designed to meet the requirements both of countries where the traffic keeps to the
right and of those where the traffic keeps to the left, may be adapted for traffic on a given
side of the road either by an appropriate initial setting when fitted on the vehicle, or by
selective setting by the user.

Such initial or selective setting may consist, for example, of fixing the angular setting of the
unit on the vehicle. In all cases, only two precise setting positions, one for right-hand and
one for left-hand traffic, shall be possible, and the design shall preclude inadvertent shifting
of the unit from the one position to the other or its setting in an intermediate position.
Conformity with the requirements of this paragraph shall be verified visually and, where
necessary, by a test fitting.

Complementary tests shall be done according to the requirements of annex 5 to ensure that
in use there is no excessive change in photo metric performance.

If the lens of the headlamp is of plastic material, tests shall be done according to the
requirements of annex 6.

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7.

7.1.

7.2.

RATED VALUES

The values of rated voltage are: 6, 12 and 24 volts (1).

The power consumed at the test voltage by any submitted SB unit shall not exceed the rated
wattage marked on the unit, by more than the percentage specified in table 1. No lower limit
is specified for the tolerance on wattage but the minimum illumination values specified in
table 2 of paragraph 8.8 must be obtained.

Table 1

Circular units
of 180 mm diameter

Circular units
of 145 mm diameter

Rated voltage

Test voltage

Double filaments

Driving beam

Passing beam

Driving beam filament only

Passing beam filament only

6

6

12

12

6

6

12

12

Rated wattage and permitted tolerance

60 + 0 %

50 + 0 %

75 + 0 %

50 + 0 %

37,5 + 0 %

50 + 0 %

50 + 0 %

50 + 0 %

8.

8.1.

8.2.

8.3.

ILLUMINATION (2)

SB units shall be so made as to give adequate illumination without dazzle for the passing
beam, and good illumination for the driving beam.

The illumination produced by the unit shall be checked on a vertical screen set at a distance
of 25 m in front of the unit and at right angles to its axis (see annex 4, plates SB8a, and
SB8b).

The passing beam must produce a sufficiently sharp ‘cut-off’ to permit satisfactory alignment
with its aid. The ‘cut-off’ must be a horizontal line on the side opposite to the direction of the
traffic for which the unit is intended; on the other side it should be horizontal or within an
angle of 15° above the horizontal.

8.4.

The SB unit shall be aimed so that on passing beam:

8.4.1.

In the case of units designed to meet the requirements of right-hand traffic, the ‘cut-off’ on
the left half of the screen (3) is horizontal and, in the case of units designed to meet the
requirements of left-hand traffic, the ‘cut-off’ on the right half of the screen is horizontal;

8.4.2.

This horizontal part of the ‘cut-off’ is situated, on the screen, 25 cm below the level of the
horizontal plane passing through the focus of the unit (see annex 4, plates SB8a and SB8b);

(1) 24-volts units are under consideration.
(2) All the photometric measurements shall be carried out at the test voltage given in paragraph 7.
(3) The test screen must be sufficiently wide to allow examination of the ‘ cut-off’ over a range of at least 5° from the

line vv.

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8.4.3.

The screen is in the position indicated in annex 4, plates SB8a and SB8b (1).

8.5.

8.6.

8.7.

8.8.

When so aimed, the unit need, if its approval is sought solely for a passing beam (2) meet
only the requirements referred to in paragraph 8.8 below; if it is intended to provide both a
passing beam and a driving beam it shall meet the requirements referred to in paragraphs 8.8
and 8.9.

Where an SB unit so aimed does not meet the requirements referred to in paragraphs 8.8 and
8.9 below, its alignment may be changed, provided that the axis of the beam is not laterally
displaced by more than 1° (= 44 cm) to the right or left (3). To facilitate alignment by means
of the ‘cut-off’, the unit may be partially occulted in order to sharpen the ‘cut-off’.

In the case of an SB unit providing a driving beam only, it shall be so aimed that the area of
maximum illumination is centred on the point of intersection HV of the lines hh and vv; such
a unit need meet only the requirements referred to in paragraph 8.9.

The illumination produced on the screen by the passing beam shall meet the following
requirements:

Table 2

Point on measuring screen

Required illumination
in lux

SB units
for right-band traffic

SB units
for left-band traffic

Minimum Maximum

B 50 R

75 L

50 L

25 R

25 L

B 50 L

75 R

50 R

25 L

25 R

Every point in zone III

Every point in zone IV

Every point in zone I

—

6

6

1,5

1,5

—

2

—

0,3

—

—

—

—

0,7

—

20

8.8.1.

8.8.2.

8.9.

There shall be no lateral variations detrimental to good visibility in any of the zones I, II, III
and IV;

SB units designed to meet the requirements of both right-hand and left-hand traffic must, in
each of the two setting positions, meet the requirements set forth above for the corresponding
direction of traffic.

In the case of an SB unit designed to provide a driving beam and a passing beam,
measurements of the illumination produced on the screen by the driving beam shall be taken
with the same unit alignment and voltage as for measurements under paragraph 8.8 above.

(1) If, in the case of a unit designed to meet the requirements of this Regulation with respect to the passing beam
only, the focal axis diverges appreciably in from the general direction of the beam, lateral adjustment shall be
effected in the manner which best satisfies the requirements for illumination at point 75 R and 50 R for right-
hand traffic and at points 75 L and 50 L for left-hand traffic.

(2) A unit designed to emit a passing beam may incorporate a driving beam not complying with the specification
(3) The limit of realignment of 1° towards the right or left is not incompatible with vertical realignment, which is

only limited by the conditions laid down in paragraph 8.9.

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8.10.

The illumination produced on the screen by the driving beam shall meet the following
requirements:

8.10.1.

The point of intersection HV of the line hh and vv shall be situated within the isolux 90 % of
maximum illumination. The maximum value shall not be less than 32 lux;

8.10.2.

8.11.

Starting from point HV, horizontally to the right and left, illumination shall be not less than
16 lux up to a distance of 1,125 metres, and not less than 4 lux up to a distance of
2,25 metres.

The screen illumination values mentioned in paragraphs 8.8 and 8.9 above shall be measured
by means of a photoelectric cell, the effective area of which shall be contained within a square
of 65 mm side.

9.

COLOUR

The light emitted shall be white or selective yellow. In the latter case the dominant wavelength
must be between 5 750 and 5 850 Angstrom units, the purity factor shall be between 0,90
and 0,98 and the illumination produced on the screen by the passing beam must meet the
requirements of Table 2 with all the figures multiplied by a factor of 0,84 (1).

10.

REMARK CONCERNING COLOUR

Any approval under this Regulation which is granted by virtue of paragraph 9 above for a
type of SB unit emitting white light or selective yellow light, does not prevent the Contracting
Parties from prohibiting, on the vehicles which they register, SB units emitting either white
or selective yellow light, according to article 3 of the Agreement to which this Regulation is
attached.

11.

GAUGING OF DISCOMFORT

The discomfort caused by the passing beam of SB units shall be gauged (2).

12.

12.1.

12.2.

CONFORMITY OF PRODUCTION

Headlamps approved under this Regulation shall be so manufactured as to conform to the
type approved by meeting the requirements set forth in paragraphs 8 and 9.

In order to verify that the requirements of paragraph 12.1 are met, suitable controls of the
production shall be carried out.

12.3.

The holder of the approval shall in particular:

12.3.1.

ensure the existence of procedures for the effective control of the quality of products;

12.3.2.

have access to the control equipment necessary for checking the conformity to each approved
type;

(1) These specifications correspond to the following trichomatic coordinates: selective yellow (yellow within the
meaning of annex 5, appendix, of the 1968 Convention on Road Traffic). Limit towards red y ¯ 0,138 + 0,580x.
Limit towards green y ˜1,29x - 0,100. Limit towards white y ¯-x + 0,966Limit towards spectrum edge y ˜ -x +
0,992.

(2) This requirement will be the subject of a recommendation for the benefit of administrations.

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12.3.3.

ensure that data of test results are recorded and that related documents shall remain available
for a period to be determined in accordance with the administrative service;

12.3.4.

analyse the results of each type of test in order to verify and ensure the stability of the
product characteristics, making allowance for variation of an industrial production;

12.3.5.

ensure that for each type of product at least the tests prescribed in annex 3 to this Regulation
are carried out;

12.3.6.

ensure that any collecting of samples giving evidence of non-conformity with the type of test
considered shall give rise to another sampling and another test. All the necessary steps shall
be taken to re-establish the conformity of the corresponding production.

12.4.

The competent authority which has granted type approval may at any time verify the
conformity control methods applicable to each production unit.

12.4.1.

In every inspection, the test books and production survey records shall be presented to the
visiting inspector.

12.4.2.

12.4.3.

12.4.4.

12.4.5.

The inspector may take samples at random to be tested in the manufacturer’s laboratory. The
minimum number of samples may be determined in the light of the results of the
manufacturer’s own checks.

When the quality level appears unsatisfactory or when it seems necessary to verify the validity
of the tests carried out in the application of paragraph 12.4.2 above, the inspector shall select
samples, to be sent to the technical service which has conducted the type approval tests,
using the criteria of annex 7.

The competent authority may carry out any test prescribed in this Regulation. These tests
will be on samples selected at random without causing distortion of the manufacturer’s
delivery commitments and in accordance with the criteria of annex 7.

The competent authority shall strive to obtain a frequency of inspection of once every two
years, However, this is at the discretion of the competent authority and their confidence in
the arrangements for ensuring effective control of the conformity of production. In the case
where negative results are recorded, the competent authority shall ensure that all necessary
steps are taken to re-establish the conformity of production as rapidly as possible.

12.5.

Headlamps with apparent defects are disregarded.

12.6.

The reference mark is disregarded.

13.

13.1.

13.2.

PENALTIES FOR NON-CONFORMITY OF PRODUCTION

The approval granted in respect of an SB unit pursuant to this Regulation may be withdrawn
if the requirements set forth above are not met, or if a unit bearing the approval mark does
not conform to the type approved.

If a Contracting Party to the Agreement applying this Regulation withdraws an approval it
has previously granted, it shall forthwith so notify the other Contracting Parties applying this
Regulation, by means of a communication form conforming to the model in annex 2 to this
Regulation.

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14.

14.1.

MODIFICATIONS OF THE TYPE OF SEALED BEAM HEADLAMP UNIT (SB UNIT) AND EXTENSION
OF APPROVAL

Every modification of the type of sealed beam headlamp unit (SB unit) shall be notified to the
administrative department which approved the type of sealed beam headlamp unit (SB unit).
The department may then either:

14.1.1.

Consider that the modifications made are unlikely to have an appreciable adverse effect and
that in any case the sealed beam headlamp unit (SB unit) still complies with the requirements;
or

14.1.2.

Require a further test report from the technical service responsible for conducting the tests.

14.2.

14.3.

Confirmation or refusal of approval, specifying the alterations, shall be communicated by the
procedure specified in paragraph 5.1.4 above to the Parties to the Agreement applying this
Regulation.

The competent authority issuing the extension of approval shall assign a series number to
each communication form drawn up for such an extension and 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.

15.

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 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.

16.

TRANSITIONAL PROVISIONS

16.1.

16.2.

16.3.

As from the date of entry into force of the 02 series of amendments to this Regulation no
Contracting Party applying it shall refuse to grant approvals under this Regulation as
amended by the 02 series of amendments.

As from 24 months after the date of entry into force mentioned in paragraph 16.1 above,
Contracting Parties applying this Regulation shall grant approvals only if the type of
headlamp corresponds to the requirements of this Regulation as amended by the 02 series of
amendments.

Existing approvals granted under this Regulation before the date mentioned in paragraph 16.2
above shall remain valid. However, Contracting Parties applying this Regulation may prohibit
the fitting of devices which do not meet the requirements of this Regulation as amended by
the 02 series of amendments:

16.3.1.

On vehicles for which type approval or individual approval is granted more than 24 months
after the date of entry into force mentioned in paragraph 16.1 above;

16.3.2.

On vehicles first registered more than five years after the date of entry into force mentioned
in paragraph 16.1 above.

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17.

NAMES AND ADDRESSED OF TECHNICAL SERVICES RESPONSIBLE FOR CONDUCTING APPROVAL
TESTS AND OF ADMINISTRATIVE DEPARTMENTS

The Parties to the 1958 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 administrative departments which grant approval and
to which forms certifying approval or refusal or, extension or withdrawal of approval, or
production definitely discontinued, issued in other countries, are to be sent.

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ANNEX 1

SB units for agricultural or forest tractors and other slow-moving vehicles

1.

1.1.

The provisions of this Regulation shall also apply to the approval of special SB units for agricultural or
forest tractors and other slow-moving vehicles, such units being intended to provide both a driving
beam and a passing beam and having a diameter (1) of less than 160 mm with the following
modifications:

The minimum requirements for illumination laid down in paragraph 8.8 of this Regulation shall be
reduced in the ratio

(D – 45)2/(160 – 45)2

subject to the following absolute lower limits:

— 3 lux at either point 75R or point 75L;

— 5 lux at either point 50R or point 50L;

— 1,5 lux in zone IV;

1.2.

Instead of the symbols provided for in paragraph 5.2.2 of this Regulation, the unit shall be marked
with the letters ‘SM’ in an inverted triangle.

(1) If the projected area of the reflector is not circular, the diameter shall be that of a circle having the same area as the projected

area of the apparent useful surface of the reflector

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ANNEX 2

Communication concerning the approval or extension or communication

[maximum format: A4 (210 × 297 mm)]

(1)

issued by: Name of administration:

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

concerning (2): APPROVAL GRANTED

APPROVAL EXTENDED

APPROVAL REFUSED

APPROVAL WITHDRAWN

PRODUCTION DEFINITELY DISCONTINUED

of a type of sealed beam headlamp unit (SB unit) pursuant to Regulation No. 5

Approval No . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Extension No . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.

SB unit submitted for approval as type (3)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Colour of light emitted: white/selective yellow (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rated voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rated wattage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The passing lamp filament may/may not (2) be lit simultaneously with the driving lamp filament and/or
another reciprocally incorporated lamp

Trade name or mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Manufacturer’s name and address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

If applicable, name and address of manufacturer’s representative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Submitted for approval on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.

3.

4.

5.

6.

(1) Distinguishing number of the country which has granted/extended/refused/withdrawn approval (see approval provisions in the

Regulation).

(2) Strike out what does not apply.
(3) Indicate the appropriate marking selected from the list below:

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7.

8.

9.

10.

11.

12.

13.

Technical service responsible for conducting approval tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Date of report issued by that service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Number of report issued by that service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Approval granted/refused/extended/withdrawn (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reason(s) of extension (if applicable) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maximum intensity (in lux) of the driving beam at 25 m from the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Extension of approval to headlamps emitting white/selective-yellow light (1)

13.1.

Test laboratory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13.2.

Date and number of laboratory report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13.3.

Date of extension of the approval

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14.

15.

16.

17.

Place . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Signature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The attached drawing, No ..., shows the unit in front view (with, if applicable, details of the lens
moulding) and a cross-section.

(1) Strike out what does not apply.

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ANNEX 3

Minimum requirements for conformity of production control procedures

1.

1.1.

1.2.

1.2.1.

GENERAL

The conformity requirements shall be considered satisfied from a mechanical and geometric standpoint,
if the differences do not exceed inevitable manufacturing deviations within the requirements of this
Regulation.

With respect to photometric performances, the conformity of mass produced headlamps shall not be
contested if, when testing photometric performances of any headlamp chosen at random:

no measured value deviates unfavourably by more than 20 per cent from the values prescribed in this
Regulation. For values B 50 L (or R) and zone III, the maximum unfavourable deviation may be
respectively:

B 50 L (or R) 0,2 lx equivalent 20 per cent

0,3 lx equivalent 30 per cent

Zone III: 0,3 lx equivalent 20 per cent

0,45 lx equivalent 30 per cent

1.2.2.

or if

1.2.2.1.

1.2.2.2.

1.2.3.

for the passing beam, the values prescribed in this Regulation are met at HV (with a tolerance of
± 0,2 lx) and related to that aiming at least one point of each area delimited on the measuring screen
(at 25 m) by a circle 15 cm in radius around points B 50 L (or R) (1) (with a tolerance of ± 0.1 lx), 75 R
(or L), 25 R, 25 L, and in the entire area of zone IV which is not more than 22,5 cm above line 25 R
and 25 L;

and if, for the driving beam, HV being situated within the isolux 0,75 Emax, a tolerance of +20 per
cent for maximum values and -20 per cent for minimum values is observed for the photometric values
at any measuring point specified in paragraph 8.10 of this Regulation.

If the results of the tests described above do not meet the requirements, the alignment of the headlamp
may be changed, provided that the axis of the beam is not displaced laterally by more than 1° to the
right or left (2).

1.3.

With respect to the verification of the change in vertical position of the cut-off line under the influence
of heat, the following procedure shall be applied:

One of the sampled headlamps shall be tested according to the procedure described in paragraph 2.1
of annex 5 after being subjected three consecutive times to the cycle described in paragraph 2.2.2 of
annex 5.

The headlamp shall be considered as acceptable if Dr does not exceed 1,5 mrad.

If this value exceeds 1,5 mrad but is not more than 2,0 mrad, a second headlamp shall be subjected to
the test after which the mean of the absolute values recorded on both samples shall not exceed
1,5 mrad.

(1) Letters in brackets refer to headlamps intended for left-hand traffic.
(2) See the corresponding footnote in the text of the Regulation.

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1.4.

The chromaticity coordinates shall be complied with.

The photometric performance of a headlamp emitting selective yellow light shall be the values
contained in this Regulation multiplied by 0,84.

2.

MINIMUM REQUIREMENTS FOR VERIFICATION OF CONFORMITY BY THE MANUFACTURER

For each type of headlamp the holder of the approval mark shall carry out at least the following tests,
at appropriate intervals. The tests shall be carried out in accordance with the provisions of this
Regulation.

If any sampling shows non-conformity with regard to the type of test concerned, further samples shall
be taken and tested. The manufacturer shall take steps to ensure the conformity of the production
concerned.

2.1.

Nature of tests

Tests of conformity in this Regulation shall cover the photometric characteristics and the verification
of the change in vertical position of the cut-off line under the influence of heat.

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.

2.2.3.

2.2.4.

In any test of conformity carried out by the manufacturer, equivalent methods may be used with the
consent of the competent authority responsible for approval tests. The manufacturer is responsible for
proving that the applied methods are equivalent to those laid down in this Regulation.

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 competence authority.

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 headlamps shall be selected at random from the production of a uniform batch. A uniform
batch means a set of headlamps of the same type, defined according to the production methods of the
manufacturer.

The assessment shall
factories. However, a
in general cover series production from individual
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 headlamp shall be subjected to photometric measurements at the points provided for in
the Regulation, the reading being limited to points Emax, HV(1), HL, HR (2) in the case of the driving
beam, and to points B 50 L (or R), HV, 75 R (or L) and 25 L (or R) in the case of the passing beam (see
figure in annex 4).

(1) Letters in brackets refer to headlamps intended for left-hand traffic.
(2) See the corresponding footnote in the text of the Regulation.

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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 competent authority, criteria governing the acceptability of his products in order
to meet the specifications laid down for verification of conformity of products in paragraph 12.1 of
this Regulation.

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 7 (first sampling) would be
0,95.

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ANNEX 4

Examples of arrangements of approval marks

Figure 1

The SB headlamp bearing the approval marking shown above is a headlamp approved in the Netherlands (E4),
meeting the requirements of this Regulation as amended by the 02 series of amendments in respect of both the
driving beam and the passing beam (SCR), and which is designed for right-hand traffic only.

Note: The approval number and the additional symbol(s) shall be placed close to the circle and either above or below
the letter ‘E’, or to the right or left of that letter. The digits of the approval number shall be on the same side of
the letter ‘E’ and face the same direction. The additional symbol(s) must be diametrically opposed to the
approval number. The use of Roman numerals as approval numbers should be avoided so as to prevent any
confusion with other symbols.

Figure 2 — Figure 3a

Figure 3b

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The SB headlamp bearing the approval marking shown above is a headlamp meeting the requirements of this
Regulation with respect to both the passing beam and the driving beam and designed:

For left-hand traffic only.

For both traffic systems, by means of an adjustment as desired of the headlamp.

Figure 4 — Figure 5

The SB headlamp bearing the approval mark shown above is a headlamp incorporating the lens of plastic material
meeting the requirements of this Regulation with respect to the passing beam only, and designed: For both traffic
systems.

For right-hand traffic only.

Figure 6 — Figure 7

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The SB headlamp bearing the approval mark shown above is a headlamp incorporating the lens of plastic material
meeting the requirements of this Regulation:

With respect to the passing beam only, and designed for left-hand traffic only.

With respect to the driving beam only.

Figure 8 — Figure 9

Identification of a headlamp meeting the requirements of Regulation No 5 with respect to both the passing beam
and the driving beam and designed for right-hand traffic only. with respect to the passing beam only and designed
for the right-hand traffic only.

The passing lamp filament shall not be lit simultaneously with the driving lamp filament and/or another reciprocally
incorporated lamp.Examples of simplified markings for grouped, combined or reciprocally incorporated lamps

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Figure 10

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(The vertical and horizontal lines schematise the shape of the light-signalling device. They are not part of the approval
mark)

Note:

The four examples shown above correspond to a lighting device bearing an approval mark relating to:

A front position lamp approved in accordance with the 01 series of amendments to Regulation No 7;

A headlamp meeting the requirements of this Regulation with respect to the passing beam and to the driving beam,
and designed for both traffic systems and incorporating a lens of plastic material;

A front fog lamp approved in accordance with the 02 series of amendments to Regulation No 19 and incorporating
a lens of plastic material;

A front direction indicator lamp of category 1 a approved in accordance with the 02 series of amendments to
Regulation No 6.

Figure 11

Lamp reciprocally incorporated with a headlamp

Example 1

The above example corresponds to the marking of a lens of plastic material intended to be used in different types of
headlamps, namely:

either: 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 5 as amended by the 02 series of amendments,
which is reciprocally incorporated with a front position lamp approved in accordance with the 01 series of
amendments to Regulation No 7;

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 101 250 candelas, approved in Germany (E1) in accordance with the
requirements of Regulation No 31 as amended by the 02 series of amendments which is reciprocally incorporated
with the same front position lamp as above;

or even: either of the above-mentioned headlamps approved as a single lamp. The main body of the headlamp shall
bear the only valid approval number, for instance:

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Figure 11

Example 2

The above example corresponds to the marking of a lens used in an assembly of two headlamps approved in
Germany (E1), consisting of a headlamp emitting a passing beam designed for both traffic systems and of a driving
beam meeting the requirements of Regulation No 1, and of a headlamp emitting a driving beam meeting the
requirements of Regulation No 5.

Plate SB2 — Sealed Beam Headlump Unit, 180 mm (7in) DIA, type 2 double Beam (Passing & Driving)

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Plate SB3 — Sealed Beam Headlump Unit, 180 mm (7in) DIA, type 1 single Beam (Driving only)

Plate SB4 — Sealed Beam Headlump Unit, 180 mm (7in) DIA, type 2 single Beam (Passing only)

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Plate SB5 — Sealed Beam Headlump Unit, 145 mm (5,75in) DIA, type 1 single Beam (Driving only)

Plate SB7 — Sealed Beam Headlump Unit, 145 mm (5,75in) DIA, type 1 single Beam (Passing only)

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ANNEX 5

Tests for stability of photometric performance of headlamps in operation

TESTS ON COMPLETE HEADLAMPS

Once the photometric values have been measured according to the prescriptions of this Regulation, in points for
Emax for driving beam and HV, 50 R, B 50 L for passing beam (or HV, 50 L, B 50 R for headlamps designed for left-
hand traffic) a complete headlamp sample shall be tested for stability of photometric performance in operation.
‘Complete headlamps’ shall be understood to mean the complete lamp itself including those surrounding body parts
and lamps which could influence its thermal dissipation.

1.

TEST OF STABILITY OF PHOTOMETRIC PERFORMANCE

The tests shall be carried out in a dry and still atmosphere at an ambient temperature of 23 °C ± 5 °C,
the complete headlamp being mounted on a base representing the correct installation on the vehicle.

1.1.

Clean headlamp

The headlamp shall be operated for 12 hours as described in subparagraph 1.1.1 and checked as
prescribed in subparagraph 1.1.2.

1.1.1.

T e s t P r o c e d u r e

The headlamp shall be operated for a period according to the specified time, so that:

1.1.1.1.

(a) in the case where only one lighting function (driving or passing beam) is to be approved, the

corresponding filament is lit for the prescribed time (1),

(b) in the case of a reciprocally incorporated passing lamp and driving lamp (dual filament SB

headlamp):

— If the applicant declares that the headlamp is to be used with a single filament lit (2) at a time,
the test shall be carried out in accordance with this condition, activating (1) each specified
function successively for half the time specified in paragraph 1.1;

— In all other cases (1) (2), the headlamp, shall be subjected to the following cycle until the time

specified is reached:

15 minutes, passing-beam filament lit

5 minutes, all filaments lit.

(c)

in the case of grouped lighting functions all the individual functions shall be lit simultaneously for the time
specified for individual lighting functions (a) also taking into account the use of reciprocally incorporated
lighting functions (b), according to the manufacturer’s specifications.

1.1.1.2.

Test voltage

The voltage shall be adjusted so as to supply a wattage 15 % (26 % for 24 V types) higher than the
rated wattage specified in this Regulation for the type(s) of SB headlamp(s) concerned is (are) obtained.

(1) When the tested headlamp is grouped and/or reciprocally incorporated with signalling lamps, the latter shall be lit for the
duration of the test. In the case of a direction indicator lamp, it shall be lit in flashing operation mode with an on/ off time ratio
of approximately one to one.

(2) Should two filaments be simultaneously lit when headlamp flashing is used, this shall not be considered as being normal use of

both filaments simultaneously.

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1.1.2.

T e s t r e s u l t s

1.1.2.1.

Visual inspection

Once the headlamp has been stabilised to the ambient temperature, the headlamp lens and the external
lens, if any, shall be cleaned with a clean, damp cotton cloth. It shall then be inspected visually; no
distortion, deformation, cracking or change in colour of either the headlamp lens or the external lens,
if any, shall be noticeable.

1.1.2.2.

Photometric test

To comply with the requirements of this Regulation, the photometric values shall be verified in the
following points:

Passing beam:

50 R — B 50 L — HV for headlamps designed for right-hand traffic

50 L — B 50 R — HV for headlamps designed for left-hand traffic

Driving beam:

Point of Emax

Another aiming may be carried out to allow for any deformation of the headlamp base due to heat (the
change of the position of the cut-off line is covered in paragraph 2 of this annex);a 10 % discrepancy
between the photometric characteristics and the values measured prior to the test is permissible
including the tolerances of the photometric procedure.

1.2.

Dirty headlamp

After being tested as specified in subparagraph 1.1 above, the headlamp shall be operated for one hour
as described in subparagraph 1.1.1, after being prepared as prescribed in subparagraph 1.2.1, and
checked as prescribed in subparagraph 1.1.2.

1.2.1.

P r e p a r a t i o n o f t h e h e a d l a m p

1.2.1.1.

Test mixture

1.2.1.1.1.

For headlamp with the outside lens in glass:

The mixture of water and a polluting agent to be applied to the headlamp shall be composed of:

9 parts by weight of silica sand with a particle size of 0-100 (cid:236)m,

1 part by weight of vegetal carbon dust (beechwood) with a particle size of 0-100 (cid:236)m,

0,2 part by weight of NaCMC (1), and

an appropriate quantity of distilled water, with a conductivity of ˜ 1 mS/m.

The mixture must not be more than 14 days old.

1.2.1.1.2.

For headlamp with outside lens in plastic material:

The mixture of water and polluting agent to be applied to the headlamp shall be composed of:

9 parts by weight of silica sand with a particle size of 0-100 (cid:236)m,

(1) NaCMC represents the sodium salt of carboxymethylcellulose, customarily referred to as CMC. The NaCMC used in the dirt

mixture shall have a degree of substitution (DS) of 0,6-0,7 and a viscosity of 200-300 cP for a 2 % solution at 20 °C.

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1 part by weight of vegetal carbon dust (beechwood) with a particle size of 0-100 (cid:236)m,

0,2 part by weight of NaCMC (1),

13 parts by weight of distilled water with a conductivity of ˜ 1 mS/m, and

2 ± 1 parts by weight of surface-actant (2).

The mixture must not be more than 14 days old

1.2.1.2.

Application of the test mixture to the headlamp

The test mixture shall be uniformly applied to the entire light emitting surface of the headlamp and
then left to dry. This procedure shall be repeated until the illumination value has dropped to 15-20 %
of the values measured for each following point under the conditions described in paragraph 1 above:

Point of Emax
in driving beam, photometric distribution for a driving/passing lamp,

Point of Emax
in driving beam, photometric distribution for a driving lamp only,

50 R and 50 V (3) for a passing lamp only, designed for right-hand traffic,

50 L and 50 V (3) for a passing lamp only, designed for left-hand traffic.

1.2.1.3.

Measuring equipment

The measuring equipment shall be equivalent to that used during headlamp approval tests.

2.

TEST FOR CHANGE IN VERTICAL POSITION OF THE CUT-OFF LINE UNDER THE INFLUENCE OF
HEAT

This test consists of verifying that the vertical drift of the cut-off line under the influence of heat does
not exceed a specified value for an operating passing lamp. The headlamp tested in accordance with
paragraph 1.1, shall be subjected to the test described in 2.1, without being removed from or readjusted
in relation to its test fixture.

2.1.

Test

The test shall be carried out in a dry and still atmosphere at an ambient temperature of 23 °C ± 5 °C.
Using a mass production SB headlamp which has been aged for at least one hour the headlamp shall
be operated on passing beam without being dismounted from or readjusted in relation to its test fixture.
(For the purpose of this test, the voltage shall be adjusted as specified in paragraph 1.1.1.2). The
position of the cut-off line in its horizontal part (between vv and the vertical line passing through point
B 50 L for right-hand traffic or B 50 R for left-hand traffic) shall be verified 3 minutes (r3) and
60 minutes (r60) respectively after operation. The measurement of the variation in the cut-off line
position as described above shall be carried out by any method giving acceptable accuracy and
reproducible results.

2.2.

Test results

2.2.1.

The result expressed in milliradians (mrad) shall be considered as acceptable when the absolute value

˜rI = | r3-r60 |

recorded on the headlamp is not more than 1,0 mrad (˜rI ˜ 1,0 mrad)

(1) NaCMC represents the sodium salt of carboxymethylcellulose, customarily referred to as CMC. The NaCMC used in the dirt

mixture shall have a degree of substitution (DS) of 0,6-0,7 and a viscosity of 200-300 cP for a 2 % solution at 20 °C.
(2) The tolerance on quantity is due to the necessity of obtaining a dirt that correctly spreads out on all the plastic lens.
(3) 50 V is situated 375 mm below HV on the vertical line v-v on the screen at 25 m distance.

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2.2.2.

However, if this value is more than 1,0 mrad but not more than 1,5 mrad (1,0 mrad ˜ ˜rI ˜ 1,5 mrad)
a second headlamp shall be tested as described in 2.1 after being subjected three consecutive times to
the cycle as described below, in order to stabilise the position of mechanical parts of the headlamp on
a base representative of the correct installation on the vehicle: Operation of the passing lamp for one
hour, (the voltage shall be adjusted as specified in paragraph 1.1.1.2),

Period of rest for one hour.

The headlamp type shall be considered as acceptable if the mean value of the absolute values ˜rI
measured on the first sample and ˜rII measured on the second sample is not more than 1,0 mrad
(˜rI + ˜rII) / 2 ˜ 1,0 mrad)

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ANNEX 6

Requirements for lamps incorporating lenses of plastic material — testing of lens or material samples and
of complete lamps

1.

GENERAL SPECIFICATIONS

1.1.

1.2.

1.3.

1.4.

The samples supplied pursuant to paragraph 3.2.4 of this Regulation shall satisfy the specifications
indicated in paragraphs 2.1 to 2.5 below.

Two out of the five samples of complete lamps supplied pursuant to paragraph 3.2.3 of this Regulation
and incorporating lenses of plastic material shall, with regard to the lens material, satisfy the
specifications indicated in paragraph 2.6 below.

The samples of lenses of plastic material or samples of material shall be subjected, with the reflector to
which they are intended to be fitted (where applicable), to approval tests in the chronological order
indicated in table A reproduced in appendix 1 to this annex.

However, if the lamp manufacturer can prove that the product has already passed the tests prescribed
in paragraphs 2.1-2.5 below, or the equivalent tests pursuant to another Regulation, those tests need
not be repeated; only the tests prescribed in appendix 1, table B, shall be mandatory.

2.

TESTS

2.1.

Resistance to temperature changes

2.1.1.

T e s t s

Three new samples (lenses) shall be subjected to five cycles of temperature and humidity (RH = relative
humidity) change in accordance with the following programme:

— 3 hours at 40 °C ± 2 °C and 85-95 % RH;

— 1 hour at 23 °C ± 5 °C and 60-75 % RH;

— 15 hours at -30 °C ± 2 °C;

— 1 hour at 23 °C ± 5 °C and 60-75 % RH;

— 3 hours at 80 °C± 2 °C;

— 1 hour at 23 °C ± 5 °C and 60-75 % RH;

Before this test, the samples shall be kept at 23 °C ± 5 °C and 60-75 % RH for at least four hours.

Note: The periods of one hour at 23 °C ± 5 °C shall include the periods of transition from one

temperature to another which are needed in order to avoid thermal shock effects.

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2.1.2.

P h o t o m e t r i c m e a s u r e m e n t s

2.1.2.1.

Method

Photometric measurements shall be carried out on the samples before and after the test. These
measurements shall be made using a standard lamp, at the following points:

— B 50 L and 50 R for the passing beam of a passing lamp or a passing/driving lamp (B 50 R and

50 L in the case of headlamps intended for left-hand traffic);

— Emax route for the driving beam of a driving lamp or a passing/driving lamp;

2.1.2.2.

Results

The variation between the photometric values measured on each sample before and after the test shall
not exceed 10 % including the tolerances of the photometric procedure.

2.2.

Resistance to atmospheric and chemical agents

2.2.1.

R e s i s t a n c e t o a t m o s p h e r i c a g e n t s

Three new samples (lenses or samples of material) shall be exposed to radiation from a source having a
spectral energy distribution similar to that of a black body at a temperature between 5 500 K and
6 000 K. Appropriate filters shall be placed between the source and the samples so as to reduce as far
as possible radiations with wave lengths smaller than 295 nm and greater than 2 500 nm. The samples
shall be exposed to an energetic illumination of 1 200 W/m2 ± 200 W/m2 for a period such that the
luminous energy that they receive is equal to 4 500 MJ/m2 ± 200 MJ/m2. Within the enclosure, the
temperature measured on the black panel placed on a level with the samples shall be 50 °C ± 5 °C. In
order to ensure a regular exposure, the samples shall revolve around the source of radiation at a speed
between 1 and 5 l/min. The samples shall be sprayed with distilled water of conductivity lower than
1 mS/m at a temperature of 23 °C ± 50 °C, in accordance with the following cycle:

— spraying: 5 minutes;

— drying: 25 minutes.

2.2.2.

R e s i s t a n c e t o c h e m i c a l a g e n t s

After the test described in paragraph 2.2.1 above and the measurement described in paragraph 2.2.3.1
below have been carried out, the outer face of the said three samples shall be treated as described in
paragraph 2.2.2.2 with the mixture defined in paragraph 2.2.2.1 below.

2.2.2.1.

Test mixture

The test mixture shall be composed of 61,5 % n-heptane, 12,5 % toluene, 7,5 % ethyl tetrachloride,
12,5 % trichloroethylene and 6 % xylene (volume per cent).

2.2.2.2.

Application of the test mixture

Soak a piece of cotton cloth (as per ISO 105) until saturation with the mixture defined in
paragraph 2.2.2.1 above and, within 10 seconds, apply it for 10 minutes to the outer face of the sample
at a pressure of 50 N/cm2, corresponding to an effort of 100 N applied on a test surface of 14 ×
14 mm. During this 10-minute period, the cloth pad shall be soaked again with the mixture so that the
composition of the liquid applied is continuously identical with that of the test mixture prescribed.
During the period of application, it is permissible to compensate the pressure applied to the sample in
order to prevent it from causing cracks.

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2.2.2.3.

Cleaning

At the end of the application of the test mixture, the samples shall be dried in the open air and then
washed with the solution described in paragraph 2.3 (Resistance to detergents) 23 °C ± 5 °C. Afterwards
the samples shall be carefully rinsed with distilled water containing not more than 0,2 % impurities at
23 °C ± 5 °C and then wiped off with a soft cloth.

2.2.3.

R e s u l t s

2.2.3.1.

2.2.3.2.

After the test of resistance to atmospheric agents, the outer face of the samples shall be free from
cracks, scratches, chipping and deformation, and the mean variation in transmission ˜t = (T2 – T3) /
T2, measured on the three samples according to the procedure described in appendix 2 to this annex
shall not exceed 0,020 (˜tm ˜ 0,020).

After the test of resistance to chemical agents, the samples shall not bear any traces of chemical staining
likely to cause a variation of flux diffusion, whose mean variation ˜d = (T5 – T4) / T2, measured on the
three samples according to the procedure described in appendix 2 to this annex shall not exceed 0,020
(˜dm ˜ 0,020).

2.3.

Resistance to detergents and hydrocarbons

2.3.1.

R e s i s t a n c e t o d e t e r g e n t s

The outer face of three samples (lenses or samples of material) shall be heated to 50 °C ± 5 °C and then
immersed for five minutes in a mixture maintained at 23 °C ± 5 °C and composed of 99 parts distilled
water containing not more than 0,02 % impurities and one part alkylaryl sulphonate. At the end of the
test, the samples shall be dried at 50 °C ± 5 °C. The surface of the samples shall be cleaned with a moist
cloth.

2.3.2.

R e s i s t a n c e t o h y d r o c a r b o n s

The outer face of these three samples shall then be lightly rubbed for one minute with a cotton cloth
soaked in a mixture composed of 70 % n-heptane and 30 % toluene (volume per cent), and shall then
be dried in the open air.

2.3.3.

R e s u l t s

After the above two tests have been performed successively, the mean value of the variation in
transmission ˜t = (T2 – T3) / T2, measured on the three samples according to the procedure described
in appendix 2 to this annex shall not exceed 0,010 (˜tm ˜ 0,010).

2.4.

Resistance to mechanical deterioration

2.4.1.

M e c h a n i c a l d e t e r i o r a t i o n m e t h o d

The outer face of the three new samples (lenses) shall be subjected to the uniform mechanical
deterioration test by the method described in appendix 3 to this annex.

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2.4.2.

R e s u l t s

After this test, the variations:

in transmission: ˜t = (T2 – T3) / T2,

and in diffusion: ˜d = (T5 – T4) / T2,

shall be measured according to the procedure described in appendix 2 in the area specified in
paragraph 2.2.4 above. The mean value of the three samples shall be such that:

˜tm ˜ 0,100

˜dm ˜ 0,050.

2.5.

Test of adherence of coatings, if any

2.5.1.

P r e p a r a t i o n o f t h e s a m p l e

A surface of 20 mm × 20 mm in area of the coating of a lens shall be cut with a razor blade or a needle
into a grid of squares approximately 2 mm × 2 mm. The pressure on the blade or needle shall be
sufficient to cut at least the coating.

2.5.2.

D e s c r i p t i o n o f t h e t e s t

Use an adhesive tape with a force adhesion of 2 N/(cm of width) ± 20 % measured under the
standardised conditions specified in appendix 4 to this annex. This adhesive tape, which shall be at
least 25 mm wide, shall be pressed for at least five minutes to the surface prepared as prescribed in
paragraph 2.5.1. Then the end of the adhesive tape shall be loaded in such a way that the force of
adhesion to the surface considered is balanced by a force perpendicular to that surface. At this stage,
the tape shall be torn off at a constant speed of 1,5 m/s ± 0,2 m/s.

2.5.3.

R e s u l t s

There shall be no appreciable impairment of the gridded area. Impairments at the intersections between
squares or at the edges of the cuts shall be permitted, provided that the impaired area does not exceed
15 per cent of the gridded surface.

2.6.

Tests of the complete lamp incorporating a lens of plastic material

2.6.1.

R e s i s t a n c e t o m e c h a n i c a l d e t e r i o r a t i o n o f t h e l e n s s u r f a c e

2.6.1.1.

Tests

The lens of lamp sample No. I shall be subjected to the test described in paragraph 2.4.1. above.

2.6.1.2.

Results

After the test, the results of photometric measurements carried out on the lamp in accordance with this
Regulation shall not exceed by more than 30 % the maximum values prescribed at points B 50 L and
HV and not be more than 10 % below the minimum values prescribed at point 75 R (in the case of
headlamps intended for left-hand traffic, the points to be considered are B 50 R, HV and 75 L),

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2.6.2.

T e s t o f a d h e r e n c e o f c o a t i n g s , i f a n y

The lens of lamp sample No. 2 shall be subjected to the test described in paragraph 2.5 above.

3.

3.1.

3.1.1.

3.1.2.

3.2.

VERIFICATION OF THE CONFORMITY OF PRODUCTION

With regard to the materials used for the manufacture of lenses, the lamps of a series shall be recognised
as complying with this Regulation if:

After the test for resistance to chemical agents and the test for resistance to detergents and hydrocarbons,
the outer face of the samples exhibits no cracks, chipping or deformation visible to the naked eye (see
paragraphs 2.2.2, 2.3.1 and 2.3.2);

After the test described in paragraph 2.6.1.1, the photometric values at the points of measurement
considered in paragraph 2.6.1.2 are within the limits prescribed for conformity of production by this
Regulation.

If the test results fail to satisfy the requirements, the tests shall be repeated on another sample of
headlamps selected at random.

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Appendix 1

CHRONOLOGICAL ORDER OF APPROVAL TESTS

A.

Tests on plastic materials (lenses or samples of material supplied pursuant to paragraph 3.2.4 of this
Regulation)

Samples

Lenses or samples of material

Lenses

Tests

1 2 3 4 5 6 7 8 9 10 11 12 13

1.1.

1.1.1.

1.1.2.

1.2.1.

1.2.2.

1.3.

1.3.1.

1.4.

1.4.1.

1.5.

1.6.

1.6.1.

1.7.

1.7.1.

1.7.2.

1.8.

Limited photometry (paragraph 2.1.2)

Temperature change (paragraph 2.1.1)

Limited photometrey (paragraph 2.3.2)

X X X

X X X

X X X

Transmission measurement

X X X X X X X X X

Diffusion measurement

Atmopheric agents (paragraph 2.2.1)

Transmission measurement

Chemicals agents (paragraph 2.2.2)

Diffusion measurement

Detergents (paragraph 2.3.1)

Hydrocarbons (paragraph 2.3.2)

Transmission measurement

Deterioration (paragraph 2.4.1)

Transmission measurement

Diffusion measurement

Adherence (paragraph 2.5)

X X X

X X X

X X X

X X X

X X X

X X X

X X X

X X X

X X X

X X X

X X X

X X X

X

B.

Tests on complete lamps (supplied pursuant to paragraph 3.2.3 of this Regulation)

Tests

2.1.

2.2.

2.3.

Deterioration (paragraph 2.6.1.1)

Photometry (paragraph 2.6.1.2)

Adherence (paragraph 2.6.2)

Complete lamp

Sample No. 1

Sample No. 2

X

X

X

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Appendix 2

METHOD OF MEASUREMENT OF THE DIFFUSION AND TRANSMISSION OF LIGHT

1.

EQUIPMENT (see figure)

The beam of a collimator K with a half divergence (cid:226)/2 = 17,4 × 10-4 rd is limited by a diaphragm DT with an
opening of 6 mm against which the sample stand is placed.

A convergent achromatic lens L2, corrected for spherical aberrations, links the diaphragm DT with the receiver
R; the diameter of the lens L2 shall be such that it does not diaphragm the light diffused by the sample in a
cone with a half top angle of (cid:226)/2 = 14°.

An annular diaphragm DD with angles Æ a/2 = 1° and Æ max/2 = 12° is placed in an image focal plane of the
lens L2.

The non-transparent central part of the diaphragm is necessary in order to eliminate the light arriving directly
from the light source. It shall be possible to remove the central part of the diaphragm from the light beam in
such a manner that it returns exactly to its original position.

The distance L2 DT and the focal length F2 (1) of the lens L2 shall be so chosen that the image of DT completely
covers the receiver R.

When the initial incident flux is referred to 1 000 units, the absolute precision of each reading shall be better
than 1 unit.

2. MEASUREMENTS

The following readings shall be taken:

Reading

With sample

With central par of DD

Quantity represented

T1

T2

no

yes (before test)

T3

yes (latter test)

T4

T5

yes (before test)

yes (latter test)

no

no

no

yes

yes

Incident flux in initial reading

Flux transmitted by the new material in a field of
24 °C

Flux transmitted by the tested material in a field of
24 °C

Flux diffused by the new material

Flux diffused by the tested material

(1) For L 2 it is recommended to use a focal distance of about 80 mm.

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Appendix 3

SPRAY TESTING METHOD

1.

TEST EQUIPMENT

1.1.

Spray gun

The spray gun used shall be equipped with a nozzle 1,3 mm in diameter allowing a liquid flow rate of
0,24 ± 0,02 1/minute at an operating pressure of 6.0 bars + 0,5 bar. Under these operation conditions
the fan pattern obtained shall be 170 mm ± 50 mm in diameter on the surface exposed to deterioration,
at a distance of 380 mm ± 10 mm from the nozzle.

1.2.

Test mixture

The test mixture shall be composed of:

— Silica sand of hardness 7 on the Mohr scale, with a grain size between 0 and 0,2 mm and an

almost normal distribution, with an angular factor of 1,8 to 2;

— Water of hardness not exceeding 205 g/m3 for a mixture comprising 25 g of sand per litre of

water.

2.

TEST

The outer surface of the lamp lenses shall be subjected once or more than once to the action of the
sand jet produced as described above. The jet shall be sprayed almost perpendicular to the surface to be
tested.

The deterioration shall be checked by means of one or more samples of glass placed as a reference near
the lenses to be tested. The mixture shall be sprayed until the variation in the diffusion of light on the
sample or samples measured by the method described in appendix 2, is such that:

˜d = (T5 – T4)/T2 = 0,0250 ± 0,0025

Several reference samples may be used to check that the whole surface to be tested has deteriorated
homogeneously.

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Appendix 4

ADHESIVE TAPE ADHERENCE TEST

1.

PURPOSE

This method allows to determine under standard conditions the linear force of adhesion of an adhesive
tape to a glass plate.

2.

3.

4.

PRINCIPLE

Measurement of the force necessary to unstick an adhesive tape from a glass plate at an angle of 90°.

SPECIFIED ATMOSPHERIC CONDITIONS

The ambient conditions shall be at 23 °C ± 5 °C and 65 ± 15 per cent relative humidity (RH).

TEST PIECES

Before the test, the sample roll of adhesive tape shall be conditioned for 24 hours in the specified
atmosphere (see paragraph 3 above). Five test pieces each 400 mm long shall be tested from each roll.
These test pieces shall be taken from the roll after the first three turns were discarded.

5.

PROCEDURE

The test shall be under the ambient conditions specified in paragraph 3.

Take the five test pieces while unrolling the tape radially at a speed of approximately 300 mm/s, then
apply them within 15 seconds in the following manner:

— Apply the tape to the glass plate progressively with a slight lengthwise rubbing movement of the
finger, without excessive pressure, in such a manner as to leave no air bubble between the tape
and the glass plate.

— Leave the assembly in the specified atmospheric conditions for 10 minutes.

— Unstick about 25 mm of the test piece from the plate in a plane perpendicular to the axis of the

test piece.

— Fix the plate and fold back the free end of the tape at 90°. Apply force in such a manner that the
separation line between the tape and the plate is perpendicular to this force and perpendicular to
the plate.

— Pull to unstick at a speed of 300 mm/s ± 30 mm/s and record the force required.

6.

RESULTS

The five values obtained shall be arranged in order and the median value taken as the result of the
measurement. This value shall be expressed in Newtons per centimetre of width of the tape.

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ANNEX 7

Minimum requirements for sampling by an inspector

1.

GENERAL

1.1.

1.2.

The conformity requirements shall be considered satisfied from a mechanical and a geometric
standpoint, in accordance with the requirements of this Regulation, if any, if the differences do not
exceed inevitable manufacturing deviations.

With respect to photometric performance, the conformity of mass produced headlamps shall not be
contested if, when testing photometric performances of any headlamp chosen at random:

1.2.1.

no measured value deviates unfavourably by more than 20 per cent from the values prescribed in this
Regulation. For values B 50 L (or R) and Zone III the maximum deviation may be respectively:

B 50 L (or R): 0,2 lx equivalent 20 per cent

0,3 lx equivalent 30 per cent

Zone III: 0,3 lx equivalent 20 per cent

0,45 lx equivalent 30 per cent

1.2.2.

or if

1.2.2.1.

1.2.2.2.

or the passing beam, the values prescribed in this Regulation are met at 3 HV (with a tolerance of
0,2 1x) and related to that aiming at least one point of each area delimited on the measuring screen (at
25 m) by a circle 15 cm in radius around points B 50 L (or R) (with a tolerance of 0,1 lx), 75 R (or L),
25 R, 25 L, and in the entire area of zone IV which is not more than 22.5 cm above line 25 R and 25 L;

and if, for the driving beam, HV being situated within the isolux 0,75 Emax, a tolerance of +20 per
cent for maximum values and -20 per cent for minimum values is observed for the photometric values
at any measuring point specified in paragraph 8.10 of this Regulation. The reference mark is
disregarded.

1.2.3.

If the results of the tests described above do not meet the requirements, the alignment of the headlamp
may be changed, provided that the axis of the beam is not displaced laterally by more than 1° to the
right or left (1).

1.2.4.

Headlamps with apparent defects are disregarded.

1.2.5.

The reference mark is disregarded.

1.3.

The chromaticity co-ordinates shall be complied with.

The photometric performance of a headlamp emitting selective yellow light shall be the values
contained in this Regulation multiplied by 0,84.

(1) See the corresponding footnote in the text of the Regulation.

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2.

FIRST SAMPLING

In the first sampling four headlamps are selected at random. The first sample of two is marked A, the
second sample of two is marked B.

2.1.

The conformity is not contested.

2.1.1.

Following the sampling procedure shown in Figure 1 of this annex the conformity of mass-produced
headlamps shall not be contested if the deviation of the measured values of the headlamps in the
unfavourable directions are:

2.1.1.1.

sample A

A1 one headlamp 0 per cent

one headlamp not more than 20 per cent

A2 both headlamps 0 per cent

but not more than 20 per cent

go to sample B

2.1.1.2.

sample B

B1 both headlamps 0 per cent

2.1.2.

or if the conditions of paragraph 1.2.2 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
headlamps shall be contested and the manufacturer requested to make his production meet the
requirements (alignment) if the deviations of the measured values of the headlamps are:

2.2.1.1.

sample A

A3 one headlamp not more than 20 per cent

one headlamp more than 20 per cent

but not more than 30 per cent

2.2.1.2.

sample B

B2 in the case of A2

one headlamp more than 0 per cent

but not more than 20 per cent

one headlamp not more than 20 per cent

B3 in the case of A2

one headlamp 0 per cent

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one headlamp more than 20 per cent

but not more than 30 per cent

2.2.2.

or if the conditions of paragraph 1.2.2 for sample A are not fulfilled.

2.3.

Approval withdrawn

Conformity shall be contested and paragraph 10 applied if, following the sampling procedure in
Figure 1 of this annex, the deviations of the measured values of the headlamps are:

2.3.1.

sample A

A4 one headlamp not more than 20 per cent

one headlamp more than 30 per cent

A5 both headlamps more than 20 per cent

2.3.2.

sample B

B4 in the case of A2

one headlamp more than 0 per cent

but not more than 20 per cent

one headlamp more than 20 per cent

B5 in the case of A2

both headlamps more than 20 per cent

B6 in the case of A2

one headlamp 0 per cent

one headlamp more than 30 percent

2.3.3.

or if the conditions of paragraph 1.2.2 for samples A and B are not fulfilled.

3.

REPEATED SAMPLING

In the cases of A3, B2, B3 a repeated sampling, third sample C of two headlamps and fourth sample D
of two headlamps, selected from stock manufactured after alignment, is necessary within two months
time after the notification.

3.1.

The conformity is not contested.

3.1.1.

Following the sampling procedure shown in Figure 1 of this annex the conformity of mass-produced
headlamps shall not be contested if the deviations of the measured values of the headlamps are:

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3.1.1.1.

sample C

C1 one headlamp 0 per cent

one headlamp not more than 20 per cent

C2 both headlamps more than 0 per cent

But not more than 20 per cent

go to sample D

3.1.1.2.

sample D

D1 in the case of C2

both headlamps 0 per cent

3.1.2.

or if the conditions of paragraph 1.2.2 for sample C are fulfilled.

3.2.

The conformity is contested.

3.2.1.

Following the sampling procedure shown in Figure 1 of this annex the conformity of mass-produced
headlamps shall be contested and the manufacturer requested to make his production meet the
requirements (alignment) if the deviations of the measured values of the headlamps are:

3.2.1.1.

sample D

D2 in the case of C2

one headlamp more than 0 per cent

but not more than 20 per cent

one headlamp not more than 20 per cent

3.2.1.2.

or if the conditions of paragraph 1.2.2 for sample C are not fulfilled:

3.3.

Approval withdrawn

Conformity shall be contested and paragraph 13 applied if, following the sampling procedure in
Figure 1 of this annex, the deviations of the measured values of the headlamps are:

3.3.1.

sample C

C3 one headlamp not more than 20 per cent

one headlamp more than 20 per cent

C4 both headlamps more than 20 per cent

3.3.2.

sample D

D3 in the case of C2

one headlamp 0 or more than 0 per cent

one headlamp more than 20 per cent

3.3.3.

or if the conditions of paragraph 1.2.2 for samples C and D are not fulfilled.

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4.

CHANGE OF THE VERTICAL POSITION OF THE CUT-OFF LINE

With respect to the verification of the change in vertical positions of the cut-off line under the influence
of heat, the following procedure shall be applied:

One of the headlamps of sample A after sampling procedure in Figure l of this annex shall be tested
according to the procedure described in paragraph 2.1 of annex 5 after being subjected three
consecutive times to the cycle described in paragraph 2.2.2 of annex 5.

The headlamp shall be considered as acceptable if ˜ r does not exceed 1,5 mrad.

If this value exceeds 1,5 mrad but is not more than 2,0 mrad, the second headlamp of sample A shall
be subjected to the test after which the mean of the absolute values recorded in both samples shall not
exceed 1,5 mrad.

However, if this value of 1,5 mrad on sample A is not complied with, the two headlamps of sample B
shall be subjected to the same procedure and the value of ˜ r for each of them shall not exceed
1,5 mrad.