Regulation No. 72-01

Name:Regulation No. 72-01
Description:Headlamps - Asymmetrical Passing/Driving Beam Halogen Filament Lamps (HS1) - Motorcycles.
Official Title:Uniform Provisions Concerning the Approval of: Motor Cycle Headlamps Emitting an Asymmetrical Passing Beam and a Driving Beam and Equipped with Halogen Lamps (HS1 Lamps).
Country:ECE - United Nations
Date of Issue:1988-05-19
Amendment Level:01 Series
Number of Pages:39
Vehicle Types:Component, Motorcycle
Subject Categories:Lighting and Light Signalling Equipment
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Keywords:

headlamp, approval, regulation, test, paragraph, lamp, headlamps, beam, annex, samples, requirements, passing, traffic, tests, lens, driving, material, photometric, point, lenses, type, lamps, designed, filament, left-hand, prescribed, line, production, force, illumination, sample, mixture, mark, values, appendix, light, tape, cut-off, standard, right-hand, granted, measurement, resistance, measured, screen, means, series, provisions, position, parties

Text Extract:

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E/ECE/324 )
E/ECE/TRANS/505 ) Rev.1/Add.71/Amend.3
December 5, 2001
STATUS OF UNITED NATIONS REGULATION
ECE 72
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
MOTOR CYCLE HEADLAMPS EMITTING AN ASYMMETRICAL
PASSING BEAM AND A DRIVING BEAM AND EQUIPPED
WITH HALOGEN LAMPS (HS LAMPS)
Incorporating:
00 series of amendments
Date of Entry into Force: 15.02.88
Corr. 1 to the 00 series of amendments
Dated: 10.05.89
Supplement 1 to the 00 series of amendments
Date of Entry into Force: 27.10.92
Corr. 1 to Amendment 1 to the 00 series of amendments
Dated: 10.03.95
Supplement 2 to the 00 series of amendments
Date of Entry into Force: 28.07.98
01 series of amendments
Date of Entry into Force: 12.09.01

REGULATION No. 72
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF MOTOR CYCLE
HEADLAMPS EMITTING AN ASYMMETRICAL PASSING BEAM AND A DRIVING BEAM
AND EQUIPPED WITH HALOGEN LAMPS (HS LAMPS)
REGULATION
CONTENTS
1.
Scope
2.
Definitions
3.
Application for Approval
4.
Markings
5.
Approval
6.
General Specifications
7.
Requirements for Illumination
8.
Provisions Concerning Coloured Lenses and Filters
9.
Standard (Reference) Headlamp
10.
Observation Concerning Colour
11.
Conformity of Production
12.
Penalties for Non-conformity of Production
13.
Modifications of Headlamp Type and Extension of Approval
14.
Production Definitely Discontinued
15.
Names and Addresses of Technical Services Responsible for Conducting Approval Tests
and of Administrative Departments
16.
Transitional Provisions.
ANNEXES
Annex 1

Communication Concerning the Approval or Refusal of Extension or Withdrawal of
Approval or Production Definitely Discontinued of a Type of Motor Cycle Headlamp
Pursuant to Regulation No. 72
Annex 2 − Verification of Conformity of Production of Headlamps Equipped with HS lamps
Annex 3 − Arrangements of Approval Marks
Annex 4 − Measuring Screen
Annex 5 − Tests for Stability of Photometric Performance of Headlamps in Operation
Annex 6

Requirements for lamps incorporating lenses of plastic material - testing of lens or
material samples and of complete lamps.
Appendix 1 − Chronological order of approval tests
Appendix 2 − Method of measurement of the diffusion and transmission of light
Appendix 3 − Spray testing method
Appendix 4 − Adhesive tape adherence test

3. APPLICATION FOR APPROVAL
3.1. The application for approval of a headlamp shall be submitted by the owner of the trade
name or mark or by his duly accredited representative. The application shall specify:
3.1.1. Whether the headlamp is designed for both left-hand and right-hand traffic or for either
left-hand or right-hand traffic only.
3.2. Any application for approval shall be accompanied by:
3.2.1. Drawings in triplicate, in sufficient detail to permit identification of the type and representing
a frontal view of the headlamp, with details of lens ribbing if any, and the cross-section; the
drawings shall indicate the space reserved for the approval mark;
3.2.2. A brief technical description;
3.2.3. Two samples of the type of headlamp with colourless lenses.
3.2.3.1. For the testing of a coloured filter or coloured screen (or of a coloured lens): two samples.
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 x 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 x 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.
3.4. The competent authority shall verify the existence of satisfactory arrangements for ensuring
effective control of the conformity of production before type-approval is granted.

5.4. There shall be placed on every headlamp conforming to a type-approved under this
Regulation, in the spaces referred to in Paragraph 4.2 above, in addition to the mark
prescribed in Paragraph 4.1 above, an international approval mark consisting of:
5.4.1. A circle surrounding the Letter "E" followed by the distinguishing number of the country
which has granted approval;
5.4.2. The approval number and the following additional symbol or symbols placed close to the
circle:
5.4.2.1 On headlamps meeting left-hand traffic requirements only, a horizontal arrow pointing to the
right of an observer facing the headlamp, i.e. to the side of the road on which traffic moves;
5.4.2.2 On headlamps designed to meet the requirements of both traffic systems by means of an
appropriate adjustment of the setting of the optical unit or the lamp, a horizontal arrow with a
head on each end, the heads pointing respectively to the left and to the right;
5.4.2.3 The Letters "MBH" placed opposite to the approval number.
5.4.2.4. In every case the relevant operation mode used during the test 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 notice transmitted to the
countries which are Contracting Parties to 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.
5.4.2.5. On headlamps incorporating a lens of plastic material, the group of Letters "PL" shall be
affixed near the symbols prescribed in Paragraphs 5.4.2.1. to 5.4.2.4. above;
5.5. The marks and symbols referred to in Paragraph 5.4. above shall be clearly legible and be
indelible.
5.6. Annex 3 to this Regulation gives examples of arrangements of approval marks and
additional symbols referred to above.

7. REQUIREMENTS FOR ILLUMINATION
7.1. General Provisions
7.1.1. Headlamps shall be so made that with suitable HS lamps they give adequate illumination
without dazzle when emitting the passing beam, and good illumination when emitting the
driving beam.
7.1.2. The illumination produced by the headlamp shall be determined by means of a vertical
screen set up 25 m forward of the headlamp as shown in Annex 4 to this Regulation.
7.1.3. The headlamps shall be checked by means of an uncoloured standard (reference) lamp
designed for a rated voltage of 12 V. In the case of headlamps which may be fitted with
selective-yellow filters such filters shall be replaced by geometrically identical uncoloured
filters with a transmission factor of at least 80%. During the checking of the headlamp the
voltage at the terminals of the lamp must be regulated so as to obtain the following
characteristics:
Consumption in watts
Light flux in lumens
passing filament approx. 35 450
driving filament approx. 35 700
The headlamp shall be considered acceptable if it meets the requirements of this
Paragraph 7 with at least one standard (reference) lamp, which may be submitted with the
headlamp.
7.1.4. The dimensions determining the position of the filaments inside the HS standard filament
lamp are shown in Regulation No. 37.
7.1.5. The bulb of the standard filament lamp must be of such shape and optical quality that it
causes a minimum of reflection and refraction adversely affecting the light distribution.
7.2. Provisions Concerning Passing Beams
7.2.1. The passing beam must produce a sufficiently sharp "cut-off" to permit satisfactory
adjustment with its aid. The "cut-off" must be a horizontal straight line on the side opposite
to the direction of the traffic for which the headlamp is intended; on the other side, it must
not extend beyond either the broken line H-V H H formed by a straight line H-V H making
a 45° angle with the horizontal and the straight line H H , 1% above the straight line hh or
the straight line H-V H , inclined at an angle of 15° above the horizontal (see Annex 4). A
cut-off extending beyond both line H-V H and line H H and resulting from a combination of
the two above possibilities shall in no circumstances be permitted.
7.2.2. The headlamp shall be so aimed that:
7.2.2.1. In the case of headlamps designed to meet the requirements of right-hand traffic, the
"cut-off" on the left half of the screen is horizontal and, in the case of headlamps designed
to meet the requirements of left-hand traffic, the "cut-off" on the right half of the screen is
horizontal;

7.3. Provisions Concerning Driving Beams
7.3.1. Measurements of the illumination produced on the screen by the driving beam shall be taken with
the same headlamp alignment as for measurements under Paragraphs 7.2.5 to 7.2.7 above.
7.3.2. The illumination produced on the screen by the driving beam shall meet the following
requirements:
7.3.2.1. The point of intersection HV of lines hh and vv shall be situated within the isolux 90% of
maximum illumination. The maximum value (E ) shall not be less than 32 lux. The
maximum value shall not exceed 240 lux.
7.3.2.2. Starting from point HV, horizontally to the right and left, the illumination shall be not less
than 16 lux up to a distance of 1.125 m and not less than 4 lux up to a distance of 2.25 m.
7.4. The screen illumination values mentioned in Paragraphs 7.2.5 to 7.2.7 and 7.3 above shall
be measured by means of a photo-receptor, the effective area of which shall be contained
within a square of 65 mm side.
8. PROVISIONS CONCERNING COLOURED LENSES AND FILTERS
8.1. Approval may be obtained for headlamps emitting either colourless or selective-yellow lights
with an uncoloured lamp. Expressed in CIE trichomatic co-ordinates, the corresponding
colorimetric characteristics for yellow lenses or filters are as follows:
Selective-yellow filter (screen or lens)
Limit towards red
y ≥ 0.138 + 0.58 x
Limit towards green
y ≤ 1.29 x - 0.1
Limit towards white
y ≥ - x + 0.966
Limit towards spectral value
y ≤ - x + 0.992
which can also be expressed as follows:
dominant wave-length
575 - 585 nm
purity factor 0.90 - 0.98
The transmission factor must be ≥ 0.78
The transmission factor shall be determined by using a light source with a colour
temperature of 2856°K.
8.2. The filter must be part of the headlamp, and must be attached to it in such a way that the
user cannot remove it either inadvertently or, with ordinary tools, intentionally.

13. MODIFICATION OF HEADLAMP TYPE AND EXTENSION OF APPROVAL
13.1. Every modification of the headlamp type shall be notified to the administrative department
which granted the type-approval. The department may then either:
13.1.1. Consider that the modifications made are unlikely to have appreciable adverse effects and
that in any case the type of headlamp complies with the requirements; or
13.1.2. Require a further test report from the technical service responsible for conducting the tests.
13.2. Confirmation or refusal of approval, specifying the alterations, shall be notified by the
procedure specified in Paragraph 5.3 above to the Parties to the Agreement applying this
Regulation.
13.3. The competent authority issuing the extension of approval shall assign a series number for
such an extension and inform thereof the other Contracting Parties applying this Regulation
by means of a communication form conforming to the model in Annex 1 to this Regulation.
14. PRODUCTION DEFINITELY DISCONTINUED
If the holder of the approval completely ceases to manufacture a headlamp 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 Agreement applying this Regulation by means of a communication form
conforming to the model in Annex 1 to this Regulation.
15. NAMES AND ADDRESSES TO TECHNICAL SERVICES RESPONSIBLE FOR
CONDUCTING APPROVAL TESTS AND OF ADMINISTRATIVE DEPARTMENTS
The Parties to the Agreement applying this Regulation shall communicate to the United
Nations Secretariat the names and addresses of the technical services responsible for
conducting approval tests and of the administrative departments which grant approval and
to which forms certifying approval or extension or refusal or withdrawal of approval, issued
in other countries, are to be sent.

ANNEX 1
(Maximum format: A4 (210 x 297 mm))
COMMUNICATION
issued by:
Name of administration
.............................................
.............................................
.............................................
concerning:
APPROVAL GRANTED
APPROVAL EXTENDED
APPROVAL REFUSED
APPROVAL WITHDRAWN
PRODUCTION DEFINITELY DISCONTINUED
of a type of motor cycle headlamp, pursuant to Regulation No. 72.
Approval No .................................................. Extension No. ...............................................................
1. Headlamp submitted for approval as type .............................................................................
2. The passing lamp filament may/may not be lit simultaneously with the driving lamp
filament and/or another reciprocally incorporated headlamp.
3. Headlamp emitting, with a colourless lamp: a colourless beam, a selective yellow beam
4. Trade name or mark...................................................................................................................
5. Manufacturer's name and address ............................................................................................
6. If applicable, name and address of manufacturer's representative ...........................................
...................................................................................................................................................
7. Submitted for approval on..........................................................................................................
8. Technical service responsible for conducting approval tests ....................................................

ANNEX 2
VERIFICATION OF CONFORMITY OF PRODUCTION OF HEADLAMPS
EQUIPPED WITH HS LAMPS
1. Headlamps bearing an approval mark shall conform to the approved type.
2. The requirement of conformity shall be deemed satisfied from a mechanical and geometrical
standpoint if the discrepancies do not exceed inevitable manufacturing errors.
3. As regards photometric performance, the conformity of headlamps of the series will not be
contested if, during photometric tests of any headlamp, selected at random and equipped
with a standard (reference) lamp;
3.1. None of the values measured deviates unfavourably by more than 20% from the prescribed
value (for values B 50 R or L and Zone III, the maximum unfavourable deviation may be
0.2 lux (B 50 R or L), or 0.3 lux (Zone III);
3.2. or if
3.2.1. for the passing beam, the prescribed values are met at HV (with a tolerance of 0.2 lux) and
at least one point of the area delimited on the measuring screen (at 25 m) by a circle 15 cm
in radius around points B 50 R or L (with a tolerance of 0.1 lux), 75 R or L, 50 R or L, 25 R
or L, and in the entire area of zone IV which is not more than 22.5 cm above line 25 R and
25 L;
3.2.2.
and if, for the driving beam, HV being situated within the insolux 0.75 E
, a tolerance of
20% is observed for the photometric values.
4. If the results of the tests described in Paragraph 3 above do not satisfy the requirements,
the tests for the headlamp in question shall be repeated with another standard (reference)
lamp.

a = 12 mm min
Figure 2 Figure 3
The headlamp bearing the above approval mark is a headlamp meeting the requirements of this
Regulation and is designed:
For left-hand traffic only.
For both traffic systems by means of an
appropriate adjustment of the setting of
the optical unit or the lamp on the
vehicle.

Figure 5
The headlamp bearing the above approval mark is a headlamp incorporating a lens of plastic material
and meeting the requirements of this Regulation.
It is so designed that the filament of the passing beam can be lit together simultaneously with the driving
beam and/or another reciprocally incorporated lighting function.

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 E 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
headlamp" shall be understood to mean the complete lamp itself including those
surrounding body parts and lamps which could influence its thermal dissipation.
1. TEST FOR 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 headlamps being mounted on a base representative of 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. Test Procedure
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 let for the prescribed time,
(b)
In the case of a reciprocally incorporated passing lamp and driving lamp (dual
filament lamp or two filament lamps):
If the applicant declares that the headlamp is to be used with a single filament lit at a time,
the test shall be carried out in accordance with this condition, activating each specified
function successively for half the time specified in Paragraph 1.1.;
In all other cases 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.

1.2.1. Preparation of the Headlamp
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 μm,
1 part by weight of vegetal carbon dust (beechwood) with a particle size of 0-100 μm,
0.2 part by weight of NaCMC , 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 μm,
1 part by weight of vegetal carbon dust (beechwood) with a particle size of 0-100 μm,
0.2 part by weight of NaCMC ,
13 parts by weight of distilled water with a conductivity of ≤ 1 mS/m, and
2 ± 1 parts by weight of surface-actant.
The mixture must not be more than 14 days old.

2.2.2. However, if this value is more than 1.0 mrad but not more than 1.5 mrad (1.0 mrad < Δ r ≤
1.5 mrad) a second headlamp shall be tested as described in Paragraph 2.1 after being
subjected three consecutive times to the cycle as described below, in order to stabilize 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 Δ r measured on the first sample and Δ r measured on the second sample is not
more than 1.0 mrad
⎛ Δ r
⎜ Ι

+ Δ r
ΙΙ
2

≤ 1.0 mrad⎟

3. CONFORMITY OF PRODUCTION
One of the sampled headlamps shall be tested according to the procedure described in
Paragraph 2.1 after being subjected three consecutive times to the cycle described in
Paragraph 2.2.2. The headlamp shall be considered as acceptable if Δr 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.

2.1.2. Photometric Measurements
2.1.2.1. Method
2.1.2.2. Results
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);
E for the driving beam of a driving lamp or a passing/driving lamp;
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. Resistance to Atmospheric Agents
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 500K and 6 000K. Appropriate filters shall be placed between the source and
the samples so as to reduce as far as possible radiation’s 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/m ± 200 W/m for a period such that the luminous energy that they
receive is equal to 4 500 MJ/m ± 200 MJ/m . 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 1/min.
The samples shall be sprayed with distilled water of conductivity lower than 1 mS/m at a
temperature of 23° C ± 5° C, in accordance with the following cycle:
spraying: 5 minutes;
drying: 25 minutes.
2.2.2. Resistance to Chemical Agents
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.

2.2.3.2. 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
Δ d =
T5 − T4
,
T
2
measured on the three samples according to the procedure described in Appendix 2 to this
Annex shall not exceed 0.020
( Δ d m ≤
0.020)
2.3. Resistance to Detergents and Hydrocarbons
2.3.1. Resistance to Detergents
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. Resistance to Hydrocarbons
2.3.3. Results
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%),
and shall then be dried in the open air.
After the above two tests have been performed successively, the mean value of the
variation in transmission
T2 − T3
Δ t = ,
T
2
measured on the three samples according to the procedure described in Appendix 2 to this
Annex shall not exceed 0.010
( Δ t m ≤
0.010)
2.4. Resistance to Mechanical Deterioration
2.4.1. Mechanical Deterioration Method
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.

2.6. Tests of the Complete Lamp Incorporating a Lens of Plastic Material
2.6.1. Resistance to Mechanical Deterioration of the Lens Surface
2.6.1.1. Tests
2.6.1.2. Results
The lens of lamp Sample No. 1 shall be subjected to the test described in Paragraph 2.4.1.
above.
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).
2.6.2. Test of Adherence of Coatings, if any
The lens of lamp sample No. 2 shall be subjected to the test described in Paragraph 2.5.
above.
3. VERIFICATION OF THE CONFORMITY OF PRODUCTION
3.1. With regard to the materials used for the manufacture of lenses, the lamps of a series shall
be recognized as complying with this Regulation if:
3.1.1. 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);
3.1.2. 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.
3.2. If the test results fail to satisfy the requirements, the tests shall be repeated on another
sample of headlamps selected at random.

B.
Tests on complete lamps (supplied pursuant to Paragraph 3.2.3 of this Regulation)
Complete headlamp
Tests
Sample No.
1
2
2.1.
Deterioration (Para. 2.6.1.1.)
x
2.2.
Photometry (Para. 2.6.1.2.)
x
2.3.
Adherence (Para. 2.6.2.)
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 tested)
yes
(after test)
yes
(before tested)
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 6 - 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.
Headlamps - Asymmetrical Passing/Driving Beam Halogen Filament Lamps (HS1) - Motorcycles.