Regulation No. 31-02

Name:Regulation No. 31-02
Description:Headlamps - Halogen Sealed Beam - Asymmetrical Passing/Driving Beam.
Official Title:Uniform Provisions Concerning the Approval of: Power-driven Vehicle's Sealed Beam Headlamps (SB) Emitting a European Asymmetrical Passing Beam or a Driving Beam or Both.
Country:ECE - United Nations
Date of Issue:1975-06-02
Amendment Level:02 Series, Supplement 8
Number of Pages:55
Vehicle Types:Agricultural Tractor, Bus, Car, Component, Heavy Truck, Light Truck
Subject Categories:Prior Versions
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Keywords:

approval, regulation, beam, hsb, test, paragraph, unit, headlamp, passing, annex, requirements, driving, samples, tests, type, lens, units, amendments, series, lamp, headlamps, mark, traffic, sample, values, production, material, conformity, photometric, force, figure, lamps, line, optical, measured, accordance, designed, case, prescribed, light, approved, maximum, procedure, incorporated, reciprocally, results, number, date, cut-off, mrad

Text Extract:

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E/ECE/324
) Rev.1/Add.30/Rev.2/Amend.1
E/ECE/TRANS/505 )
August 6, 2013
STATUS OF UNITED NATIONS REGULATION
ECE 31-02
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
POWER-DRIVEN VEHICLE'S SEALED-BEAM HEADLAMPS (SB)
EMITTING AN EUROPEAN ASYMMETRICAL PASSING BEAM
OR A DRIVING BEAM OR BOTH
Incorporating:
Supplement 2 to the 02 series of amendments
Date of Entry into Force: 27.10.92
Corr. 1 of 27.07.95 to Revision 1 to the 02 series of amendments
Date of Entry into Force: 10.03.95
Supplement 3 to the 02 series of amendments
Date of Entry into Force: 23.01.97
Supplement 4 to the 02 series of amendments
Date of Entry into Force: 27.04.98
Supplement 5 to the 02 series of amendments
Date of Entry into Force: 04.07.06
Supplement 6 to the 02 series of amendments
Date of Entry into Force: 02.02.07
Supplement 7 to the 02 series of amendments including erratum
Date of Entry into Force: 15.10.08
Supplement 8 to the 02 series of amendments
Date of Entry into Force: 15.07.13

REGULATION
REGULATION NO. 31
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF POWER-DRIVEN
VEHICLE'S SEALED-BEAM HEADLAMPS (SB) EMITTING AN EUROPEAN
ASYMMETRICAL PASSING BEAM OR A DRIVING BEAM OR BOTH
CONTENTS
1.
Scope
2.
Definitions
3.
Application for approval
4.
Markings
5.
Approval
6.
General specifications
7.
Rated and test values
8.
Illumination
9.
Colour
10.
Gauging of discomfort
11.
Conformity of production
12.
Penalties for non-conformity of production
13.
Modification and extension of approval of a type of halogen sealed-beam headlamp unit (HSB unit)
14.
Production definitely discontinued
15.
Transitional provisions
16.
Names and addresses of Technical Services responsible for conducting approval tests and of
Administrative Departments
ANNEXES
Annex 1 – Communication concerning the approval or extension or refusal or withdrawal of approval or
production definitely discontinued of a type of halogen sealed-beam headlamp unit
(HSB unit) pursuant to Regulation No. 31
Annex 2 – Examples of arrangements of approval marks
Annex 3 – Electrical connections of HSB units
Annex 4 – Measuring screen
Annex 5 – Minimum requirements for conformity of production control procedures
Annex 6 – Tests for stability of photometric performance of headlamps in operation
Annex 7 – Requirements for lamps incorporating lenses of plastic material - testing of lens or material
samples and of complete lamps
Annex 8 – Minimum requirements for sampling by an inspector

2.4.5. the shape of the filament or filaments;
2.4.6. the kind of beam produced (passing beam, driving beam or both);
2.4.7. the materials constituting the lens and coating, if any.
2.5. "Colour of the light emitted from the device". The definitions of the colour of the light
emitted given in Regulation No. 48 and its series of amendments in force at the time of
application for type approval shall apply to this Regulation.
3. APPLICATION FOR APPROVAL
3.1. 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:
3.1.1. whether the HSB unit is intended to provide both a passing beam and a driving beam or
only one of these beams;
3.1.2. where the HSB unit is intended to provide a passing beam, whether it is designed for both
right-hand and left-hand traffic or for right-hand or left-hand traffic only.
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 HSB 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. a brief technical description;
3.2.3. samples as follows:
3.2.3.1. for approval of an HSB unit emitting uncoloured light: five samples,
3.2.3.2. for approval of an HSB unit emitting coloured light: two coloured-light samples and five
uncoloured-light samples of the same type, differing from the type submitted, only in that the
lens or filter is not coloured,
3.2.3.3. in the case of HSB units which emit coloured light, which differ from uncoloured-light units
only in the colour of light emitted and which have already satisfied the requirements of
Paragraphs 6., 7. and 8. below, it will be sufficient to submit only one sample of a
coloured-light unit to undergo the tests described in Paragraph 9. below.
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,

5.2. Composition of the Approval Mark
The approval mark shall consist of:
5.2.1. an international approval marking, comprising
5.2.1.1. a circle surrounding the Letter "E" followed by the distinguishing number of the country
which has granted approval;
5.2.1.2. the approval number prescribed in Paragraph 5.1.3. above;
5.2.2. the following additional symbol (or symbols):
5.2.2.1. on HSB optical units meeting left-hand traffic requirements only, a horizontal arrow, pointing
to the right of an observer, facing the HSB optical unit, i.e., to the side of the road on which
the traffic moves;
5.2.2.2. on HSB optical units meeting the requirements of this Regulation in respect of the passing
beam only, the Letters "HSC";
5.2.2.3. on HSB optical units meeting the requirements of this Regulation in respect of the driving
beam only, the Letters "HSR";
5.2.2.4. on HSB optical units meeting the requirements of this Regulation in respect of both the
passing beam and the driving beam, the Letters "HSCR";
5.2.2.5. on HSB optical units meeting the requirements of this Regulation in respect of the driving
beam, an indication of the maximum luminous intensity expressed by a reference mark, as
defined in Paragraph 8.3.2.1.2. below, placed near the circle surrounding the Letter "E";
5.2.2.6. on HSB units incorporating a lens of plastic material, the group of Letters "PL" near the
symbols prescribed in Paragraphs 5.2.2.3. to 5.2.2.5.above;
5.2.2.7. 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 at the time of issue of the approval and, if necessary, the required arrow may be
marked close to the additional symbols.

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 2, Figure 8, to this Regulation gives examples of arrangements of approval marks for
grouped, combined or reciprocally incorporated lamps with all the above-mentioned
additional symbols.
5.3.3. Lamps, the lens of which is used for different types of lamps and which may be reciprocally
incorporated or grouped with other lamps
The provisions laid down in Paragraph 5.3.2. above are applicable.
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 HSB unit, 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 HSB units comprise the same main body, the latter may bear the
different approval marks.
5.3.3.2. Annex 2, Figure 9, to this Regulation gives examples of arrangements of approval marks
relating to the above case.
6. GENERAL SPECIFICATIONS
6.1. Every sample shall conform to the specifications set forth in this Paragraph and in
Paragraphs 7. and 8. below and, if necessary, to those set forth in Paragraph 9.
6.2. HSB units shall be so designed and made that in normal use, despite the vibrations to which
they may then be subjected, their satisfactory operation continues to be ensured and they
retain the characteristics prescribed by this Regulation.
6.2.1. HSB optical units 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 HSB
optical unit insert if the use of such inserts is confined to vehicles on which the headlamp
setting can be adjusted by other means.
Where an HSB optical unit providing a driving beam and an HSB optical unit providing a
passing beam are assembled as exchangeable sub-units to form a composite unit, the
adjusting device shall enable each HSB 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 8.3. 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 (E ).
6.3. The terminals shall be in electrical contact with the appropriate filament or filaments only
and shall be robust and firmly fixed to the HSB unit.
6.4. HSB units shall comprise electrical connections in conformity with those shown in one of the
patterns reproduced in Annex 3 to this Regulation and shall be of the dimensions specified
in that Annex.

8.2.2.2. this horizontal part of the "cut-off" is situated on the screen 25 cm below the level hh
(see Annex 4 to this Regulation);
8.2.2.3. The "elbow" of the "cut-off" is on line vv.
8.2.3. When so adjusted, the HSB unit need meet only the requirements laid down in
Paragraphs 8.2.5. and 8.2.6. below if approval thereof is sought solely for provision of a
passing beam; if it is intended to provide both a passing beam and a driving beam it shall
meet the requirements laid down in Paragraphs 8.2.5., 8.2.6. and 8.3.
8.2.4. Where an HSB unit so adjusted does not meet the requirements laid down in
Paragraphs 8.2.5., 8.2.6. and 8.3., its alignment may be changed provided that the axis of
the beam is not displaced laterally by more than 1° (= 44 cm) to the right or left. To
facilitate alignment by means of the "cut-off", the unit may be partially occulted in order to
sharpen the "cut-off".
8.2.5. The illumination produced on the screen by the passing beam shall meet the following
requirements:
POINT ON MEASURING SCREEN
HSB UNITS FOR
RIGHT-HAND
TRAFFIC
HSB UNITS FOR
LEFT-HAND
TRAFFIC
REQUIRED ILLUMINATION
IN LUX
B 50 L
75 L
75 L
50 L
50 R
50 V
25 L
25 R
Any point in zone III
Any point in zone IV
Any point in zone I
B 50 L
75 L
75 R
50 R
50 L
20 V
25 R
25 L
≤ 0.4
≥ 12
≤ 12
≥ 12
≤ 15
≥ 6
≥ 2
≥ 2
≤ 0.7
≥ 3
≤ 2 x (E or *
E )
* E and E are the illuminations actually measured.
8.2.6. There shall be no lateral variations detrimental to good visibility in any of the Zones I, II, III
and IV.

11.3. The holder of the approval shall in particular:
11.3.1. Ensure the existence of procedures for the effective control of the quality of products;
11.3.2. Have access to the control equipment necessary for checking the conformity to each
approved type;
11.3.3. 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;
11.3.4. 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;
11.3.5. Ensure that for each type of product at least the tests prescribed in Annex 5 to this
Regulation are carried out;
11.3.6. 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.
11.4. The Competent Authority which has granted type approval may at any time verify the
conformity control methods applicable to each production unit.
11.4.1. In every inspection, the test books and production survey records shall be presented to the
visiting inspector.
11.4.2. 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.
11.4.3. 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 11.4.2. 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 8.
11.4.4. 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 8.
11.4.5. 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.
11.5. Headlamps with apparent defects are disregarded.
11.6. The reference mark is disregarded.

15. TRANSITIONAL PROVISIONS
15.1. 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.
15.2. As from 24 months after the date of entry into force mentioned in Paragraph 15.1. above,
Contracting Parties applying this Regulation shall grant approvals only if the type of
HSB unit corresponds to the requirements of this Regulation as amended by the 02 series
of amendments.
15.3. Existing approvals granted under this Regulation before the date mentioned in
Paragraph 15.2. above shall remain valid. However, Contracting Parties applying this
Regulation may prohibit the fitting of HSB units which do not meet the requirements of this
Regulation as amended by the 02 series of amendments:
15.3.1. 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 15.1. above,
15.3.2. on vehicles first registered more than five years after the date of entry into force mentioned
in Paragraph 15.1. above.
16. NAMES AND ADDRESSES 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 extension or refusal or withdrawal of approval, or
production definitely discontinued, issued in other countries, are to be sent.

8. Date of report issued by that service .........................................................................................
9. Number of report issued by that service ....................................................................................
10. Approval granted/extended/refused/withdrawn ......................................................................
11. Reason(s) of extension (if applicable) ........................................................................................
12. Maximum illumination (in lux) of the driving beam at 25 m from the HSB unit ..........................
(average for 5 units)
13. Place ..........................................................................................................................................
14. Date ............................................................................................................................................
15. Signature ....................................................................................................................................
16. The attached drawing No. .................................................................................. shows the unit.

Figure 2
a = 12 mm min
The above approval mark affixed to an HSB optical unit indicates that the unit concerned meets the
requirements of this Regulation as amended by the 02 series of amendments, with respect to both the
passing beam and the driving beam and that it is designed for left-hand traffic only.
Figure 3a
The above approval mark affixed to an HSB optical unit indicates that the unit concerned meets the
requirements of this Regulation as amended by the 02 series of amendments, in respect of the passing
beam only, and that it is designed for right-hand traffic only.

Figure 6 Figure 7
Identification of an HSB unit meeting the requirements of Regulation No. 31
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 right-hand traffic only.
The passing lamp filament shall not be lit simultaneously with the
driving lamp filament and/or another reciprocally incorporated lamp.

Model D
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;
An HSB optical unit 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 (as indicated by the
Number 30), approved in accordance with the 02 series of amendments to Regulation No. 31 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 1a, approved in accordance with the 02 series of
amendments to Regulation No. 6.

Example 2
The above example corresponds to the marking of a lens used in an assembly of two HSB optical units
approved in the Netherlands (E4), 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. 31.

Category 21
(Passing only)
Figure 2
(Dimensions in mm)

ANNEX 4
MEASURING SCREEN
A. HSB Unit for Right-hand Traffic
STANDARD EUROPEAN BEAM
(Dimensions in mm)

ANNEX 5
MINIMUM REQUIREMENTS FOR CONFORMITY OF
PRODUCTION CONTROL PROCEDURES
1. GENERAL
1.1. 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.
1.2. 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:
1.2.1. No measured value deviates unfavourably by more than 20% from the values prescribed in
this Regulation. For values B 50 L (or R) and Zone III, the maximum unfavourable deviation
may be respectively:
1.2.2. Or if
B 50 L (or R): 0.2 lx equivalent 20%
0.3 lx equivalent 30%
Zone III:
0.3 lx
equivalent 20%
0.45 lx
equivalent 30%
1.2.2.1. 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)
(with a tolerance of + 0.1 lx), 75 R (or L), 50 V, 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;
1.2.2.2. And if, for the driving beam, HV being situated within the isolux 0.75 E , a tolerance of
+20% for maximum values and -20% for minimum values is observed for the photometric
values at any measuring point specified in Paragraph 8.3. of this Regulation.
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.

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 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 headlamp shall be subjected to photometric measurements at the points
provided for in the Regulation, the reading being limited to Points E , HV , HL, HR in
the case of the driving beam, and to Points B 50 L (or R), HV, 50 V, 75 R (or L) and 25 L
(or R) in the case of the passing beam (see Figure in Annex 4).
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 11.1. of this Regulation.
The criteria governing the acceptability shall be such that, with a confidence level of 95%,
the minimum probability of passing a spot check in accordance with Annex 8 (first sampling)
would be 0.95.

(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 90% of the maximum wattage specified in this
Regulation for the type(s) of HSB headlamp(s) concerned is (are) obtained.
1.1.2. Test Results
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 E
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 sub-paragraph 1.1. above, the headlamp shall be operated
for one hour as described in sub-paragraph 1.1.1., after being prepared as prescribed in
sub-paragraph 1.2.1., and checked as prescribed in sub-paragraph 1.1.2.

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 E in driving beam, photometric distribution for a driving/passing lamp,
Point of E in driving beam, photometric distribution for a driving lamp only,
50 R and 50 V for a passing lamp only, designed for right-hand traffic,
50 L and 50 V 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
2.1. Test
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.
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 HSB 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 (r ) and 60 minutes (r ) 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 Δ r = ( r - r ) recorded on the headlamp is not more than
1.0 mrad (Δ r ≤ 1.0 mrad).

ANNEX 7
REQUIREMENTS FOR LAMPS INCORPORATING LENSES OF PLASTIC MATERIAL -
TESTING OF LENS OR MATERIAL SAMPLES AND OF COMPLETE LAMPS
1. GENERAL SPECIFICATIONS
1.1. 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.
1.2. 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.
1.3. 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.
1.4. 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. Tests
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.

2.2.2.2. Application of the Test Mixture
2.2.2.3. Cleaning
2.2.3. Results
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/cm , 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.
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.
2.2.3.1. 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
Δ t =
T
− T
T
,
measured on the three samples according to the procedure described in Appendix 2 to this
Annex shall not exceed 0.020
( Δ t ≤ 0.020)
2.2.3.2. 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
T − T
Δ d = ,
T
measured on the three samples according to the procedure described in Appendix 2 to this
Annex shall not exceed 0.020
( Δ d ≤ 0.020)

2.4.2. Results
After this test, the variations:
in transmission:
and in diffusion:
Δ t =
T
− T
T
,
Δ d =
T
− T
T
,
shall be measured according to the procedure described in Appendix 2 in the area specified
in Paragraph 3.2.4.1.1. of this Regulation. The mean value of the three samples shall be
such that:
( Δ t ≤ 0.100)
( Δ d ≤ 0.500)
2.5. Test of Adherence of Coatings, if any
2.5.1. Preparation of the Sample
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. Description of the Test
2.5.3. Results
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.
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% of the gridded surface.

ANNEX 7 - 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. Limited photometry
(Paragraph 2.1.2.)
1.1.1. Temperature change
(Paragraph 2.1.1.)
1.1.2. Limited photometry
(Paragraph 2.1.2.)
1.2.1. Transmission measurement x x x x x x x x x
1.2.2. Diffusion measurement x x x x x x
1.3. Atmospheric agents
(Paragraph 2.2.1.)
x x x
1.3.1. Transmission measurement x x x
1.4. Chemical agents (Paragraph 2.2.2.) x x x
1.4.1. Diffusion measurement x x x
1.5. Detergents (Paragraph 2.3.1.) x x x
1.6. Hydrocarbons (Paragraph 2.3.2.) x x x
1.6.1. Transmission measurement x x x
1.7. Deterioration (Paragraph 2.4.1.) x x x
1.7.1.Transmission measurement x x x
1.7.2. Diffusion measurement x x x
x x x
x x x
x x x
1.8. Adherence (Paragraph 2.5.) x
B. Tests on complete lamps (supplied pursuant to Paragraph 3.2.3 of this Regulation)
Complete headlamp
Tests
2.1.
Deterioration (Paragraph 2.6.1.1.)
2.2.
Photometry (Paragraph 2.6.1.2.)
2.3.
Adherence (Paragraph 2.6.2.)
Sample No.
1 2
x
x
x

2. MEASUREMENTS
The following readings shall be taken:
Reading With sample With central part of D Quantity represented
T no no Incident flux in initial reading
T
T
T
T
yes
(before test)
Yes
(after test)
yes
(before test)
yes
(after test)
no
no
yes
yes
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

ANNEX 7 - 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. PRINCIPLE
Measurement of the force necessary to unstick an adhesive tape from a glass plate at an
angle of 90°.
3. SPECIFIED ATMOSPHERIC CONDITIONS
The ambient conditions shall be at 23° C ± 5° C and 65 ± 15% relative humidity (RH).
4. 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
6. RESULTS
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.
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.

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
2.1.1.2. Sample B
A1:
one headlamp
0%
one headlamp not more than
20%
A2:
both headlamps more than
0%
but not more than
20%
go to Sample B
B1: both headlamps 0%
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
2.2.1.2. Sample B
A3:
one headlamp not more than
20%
one headlamp more than
20%
but not more than
30%
B2:
in the case of A2
one headlamp more than
0%
but not more than
20%
one headlamp not more than
20%
B3:
in the case of A2
one headlamp
0%
one headlamp more than
20%
but not more than
30%
2.2.2 or if the conditions of Paragraph 1.2.2 for Sample A are not fulfilled.

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%
but not more than
20%
one headlamp not more than
20%
3.2.1.2. or if the conditions of Paragraph 1.2.2 for Sample C are not fulfilled.
3.3. Approval Withdrawn
3.3.1. Sample C
3.3.2. Sample D
Conformity shall be contested and Paragraph 12 applied if, following the sampling procedure
in Figure 1 of this Annex, the deviations of the measured values of the headlamps are:
C3:
one headlamp not more than
20%
one headlamp more than
20%
C4: both headlamps more than 20%
D3:
in the case of C2
one headlamp 0 or more than
0%
one headlamp more than
20%
3.3.3. or if the conditions of Paragraph 1.2.2 for Samples C and D are not fulfilled.

Figure 1
Headlamps - Halogen Sealed Beam - Asymmetrical Passing/Driving Beam.