SIST EN 1463-1:2009
(Main)Road marking materials - Retroreflecting road studs - Part 1: Initial performance requirements
Road marking materials - Retroreflecting road studs - Part 1: Initial performance requirements
This European Standard specifies the initial performance requirements and laboratory test methods for retroreflecting road studs intended for use as permanent and temporary road marking materials.
Straßenmarkierungsmaterialien - Markierungsknöpfe - Teil 1: Anforderungen im Neuzustand
Diese Europäische Norm legt die Produktanforderungen an und die Prüfverfahren für retroreflektierende
Markierungsknöpfe im Neuzustand fest, die als dauerhafte oder vorübergehende Straßenmarkierungsmaterialien
verwendet werden sollen.
Produits de marquage routier - Plots rétroréfléchissants - Partie 1 : Exigences initiales de performance
La présente Norme européenne spécifie les exigences initiales de performance et les méthodes d’essai en laboratoire des plots rétroréfléchissants utilisés comme matériaux de marquage routier temporaires ou permanents.
Materiali za označevanje vozišča - Odsevniki - 1. del: Lastnosti novih odsevnikov
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Straßenmarkierungsmaterialien - Markierungsknöpfe - Teil 1: Anforderungen im NeuzustandProduits de marquage routier - Plots rétroréfléchissants - Partie 1 : Exigences initiales de performanceRoad marking materials - Retroreflecting road studs - Part 1: Initial performance requirements93.080.20Materiali za gradnjo cestRoad construction materialsICS:Ta slovenski standard je istoveten z:EN 1463-1:2009SIST EN 1463-1:2009en,de01-julij-2009SIST EN 1463-1:2009SLOVENSKI
STANDARDSIST EN 1463-1:1999/A1:2004SIST EN 1463-1:19991DGRPHãþD
SIST EN 1463-1:2009
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1463-1March 2009ICS 93.080.20Supersedes EN 1463-1:1997
English VersionRoad marking materials - Retroreflecting road studs - Part 1:Initial performance requirementsProduits de marquage routier - Plots rétroréfléchissants -Partie 1 : Exigences initiales de performanceStraßenmarkierungsmaterialien - Markierungsknöpfe - Teil1: Anforderungen im NeuzustandThis European Standard was approved by CEN on 17 February 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1463-1:2009: ESIST EN 1463-1:2009
EN 1463-1:2009 (E) Contents Page Foreword . 3 Introduction . 4 1 Scope . 5 2 Normative references . 5 3 Terms and definitions . 5 4 Types of road stud . 6 5 Performance requirements . 7 5.1 Construction . 7 5.2 Dimensions . 7 5.3 Night-time visibility . 7 5.3.1 Photometric requirements . 7 5.3.2 Colorimetric requirements . 9 5.4 Daytime visibility of temporary road studs . 10 5.5 Resilience of depressible road studs . 11 6 Road stud fixing . 11 7 Marking . 11 Annex A (normative)
Test method for the determination of the coefficient of luminous intensity. 12 A.1 General . 12 A.2 Apparatus . 12 A.3 Procedure . 13 A.4 Calculation and expression of results . 13 Annex B (normative)
Test method for the determination of chromaticity co-ordinates of retroreflected radiation . 15 B.1 General . 15 B.2 Apparatus . 15 B.3 Procedure . 15 B.4 Calculation and expression of results . 15 Annex C (normative)
Test method for the determination of chromaticity co-ordinates and luminance factor for daytime visibility . 17 C.1 General . 17 C.2 Apparatus . 17 C.3 Measurement and calculation . 17 Annex D (normative)
Test method for the determination of the resilience of depressible road studs . 18 D.1 Apparatus . 18 D.2 Procedure . 18 D.3 Evaluation of the test . 18 Annex ZA (informative)
Clauses of this European Standard addressing the provisions of the EU Construction Products Directive . 19 ZA.1 Scope and relevant characteristics. 19 ZA.2 Procedure(s) for the attestation of conformity of retroreflecting road studs . 20 ZA.2.1 System of attestation of conformity. 20 ZA.2.2 Certificate and Declaration of Conformity . 21 ZA.3 CE marking and labelling . 22 Bibliography . 25 SIST EN 1463-1:2009
EN 1463-1:2009 (E) 3 Foreword This document (EN 1463-1:1997/A1:2009) has been prepared by Technical Committee CEN/TC 226 “Road equipment”, the secretariat of which is held by AFNOR. This Amendment to the European Standard EN 1463-1:1997 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2009, and conflicting national standards shall be withdrawn at the latest by September 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This European Standard supersedes EN 1463-1:1997. The technical change incorporated in this revision is the Table ZA.1 in Annex ZA. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. SIST EN 1463-1:2009
EN 1463-1:2009 (E) 4 Introduction
In Mandate M/111, there is a clear requirement for durability in use. In order to meet this requirement,
EN 1463-1 specifies, in Annex ZA Table ZA.1, the standard EN 1463-2 (Road test performance specifications).
However, in the current Table ZA.1, the classes S0 and R0 (no performance determined) are included (just as a way to reflect the result of the mentioned durability test, which requires 1-year of road exposure for the applicant studs) and some notified bodies have interpreted this as meaning that it is not required to test to EN 1463-2 and consequently CE marks are being granted without durability being tested. However, in other cases, the mentioned test has been carried out; therefore, both types of road studs are now in the market granting a “well different” class of CE-marking.
In order to rectify this unsatisfactory situation it is proposed to amend the requirement for “R” to become R1 to R4 - i.e. eliminating R0, which might have caused the confusion, and thus meaning that a road test has to be carried out and the requirement for durability is met. In addition, it is also proposed that the requirement for “S” is deleted as this is not necessary to also have this to ensure durability is tested. SIST EN 1463-1:2009
EN 1463-1:2009 (E) 5
1 Scope This European Standard specifies the initial performance requirements and laboratory test methods for retroreflecting road studs intended for use as permanent and temporary road marking materials.
2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 1463-2:2000, Road marking materials – Retroreflecting road studs – Part 2: Road test performance specifications
ISO 10526, CIE standard illuminants for colorimetry
ISO 10527, CIE standard colorimetric observers
CIE publication No. 054.2-2001, Retroreflection: Definition and measurement
IEC/CIE publication No. 017.4-1987, International lighting vocabulary, 4th ed. (Joint publication IEC/CIE)
3 Terms and definitions For the purposes of this European Standard, the terms and definitions in CIE publication 17.4:1987 apply together with the following.
3.1 retroreflecting road stud (called “road stud” in this standard) horizontal guiding device that reflects incident light by means of retroreflectors (see 3.2) in order to warn, guide or inform road users
NOTE
Retroreflecting road studs may be constructed in either one or more integral parts and may be bonded to, anchored within or embedded within the road surface. The retroreflecting portion may be unidirectional or bidirectional, depressible or non depressible. This device may be either permanent (type P) or temporary (type T). 3.2
retroreflector device which reverses the direction of visible light striking it and returns it along a path substantially parallel to its original path
NOTE It may be made of glass (type 1), plastic (type 2) or plastic with an abrasion resistant surface (type 3). It may have a reflective coating at the back. 3.3
non depressible road stud substantially rigid road stud not designed to deform under the passage of traffic (type A)
3.4
depressible road stud road stud designed to have one or more parts which deform under traffic and recover to their original geometry after removal of the traffic load (type B)
3.5
bonded road stud
road stud fixed to the road surface using an adhesive applied to the stud and/or to the road surface at the time of installation
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EN 1463-1:2009 (E) 6 3.6
self-adhesive road stud
road stud precoated with adhesive
NOTE An adhesion enhancer (see 3.7) may be required under some climatic conditions. 3.7
adhesion enhancer
additional coating on the load bearing surface of the road stud or on the road surface which improves the performance of the adhesive bond
3.8
anchored road stud
road stud fixed to the road surface using an anchor or spigot
NOTE The anchor(s) or spigot(s) may be an extension of the road stud body or a separate part(s) supplied for the purpose. The principal load bearing interface of the road stud and the road is between the surface of the road and the underside of the road stud. 3.9
embedded road stud
road stud fixed into a prepared cavity of an appropriate dimension cut into the road surface
NOTE The principal load bearing interface of the road stud and the road is between a downward facing surface of the road stud and an upward facing surface of the cavity. 4 Types of road stud Road studs are classified in this European Standard in accordance with Tables 1, 2 and 3.
Table 1 - Classification of road studs by use
Use TypePermanent road stud 1) P Temporary road stud 2) T 1) Provides night-time warning guidance and information to road users.
2) Provides daytime and night-time warning guidance and information to the road user by stimulating the use of three senses. It is received visually and can be heard and felt through the rumble effect. Temporary road studs are used only at road construction/maintenance sites.
Table 2 - Classification of road studs by reflector
Reflector TypeGlass 1 Plastic 2 Plastic with abrasion resistant layer 3 NOTE
The abrasion resistant layer is applied on the surface exposed to traffic.
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EN 1463-1:2009 (E) 7
Table 3 - Classification of road studs by design
Design TypeNon depressible road stud A Depressible road stud B
5 Performance requirements 5.1 Construction For safety reasons the enveloping profile of the road studs shall not present any sharp edges to traffic.
If the road stud consists of two or more parts, each replaceable part shall be removable only with a tool recommended by the manufacturer.
5.2 Dimensions The height of that part of a road stud designed to be above the road surface shall be as follows:
- class H 0 -
no performance determined;
- class H 1 -
up to 18 mm;
- class H 2 -
from more than 18 mm to 20 mm;
- class H 3 -
from more than 20 mm to 25 mm.
NOTE Class H 0 road studs are not intended to be subjected to traffic load.
Maximum horizontal dimensions of that part of a road stud which is exposed to traffic after installation are classified as follows:
- class HD 0 -
no performance determined;
- class HD 1 -
in the direction of travel: length 250 mm, width 190 mm;
- class HD 2 -
in the direction of travel: length 320 mm, width 230 mm.
NOTE Class HD 0 road studs are intended for use when other functional needs of the road stud are required (e.g. to be snowploughed). Minimum horizontal dimensions of that part of a temporary road stud which is exposed to traffic after installation are classified as follows:
-
class HDT 0
-
no performance determined;
-
class HDT 1
-
in the direction of travel: length 35 mm, width 84 mm;
-
class HDT 2
-
in the direction of travel: length 75 mm, width 90 mm.
5.3 Night-time visibility 5.3.1 Photometric requirements 5.3.1.1 Permanent road stud
When tested in accordance with Annex A, each retroreflective face of the road stud shall have a coefficient of luminous intensity (R) as classified (see Table 4) multiplied by the appropriate colour factor given in Table 5.
-
class PRP 0
-
no performance determined;
-
class PRP 1
-
not less than given in Table 4.
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EN 1463-1:2009 (E) 8
Table 4 - Class PRP 1 - Minimum R values for type 1, type 2 and type 3 road studs as new
Entrance angle ββββH ββββV = 0° Observation angleαααα Min. Rmcd · lx-1
Type
1 2 3 ± 15° 2° 2 2,5 1,5 ± 10° 1° 10 25 10 ± 5° 0,3 ° 20 220 150
Table 5 - Colour factors for the retroreflectors of road studs
Colour Colour factorWhite 1,0 Yellow 0,6 Amber 0,5 Red 0,2 Green 0,2
5.3.1.2 Temporary road studs
When tested in accordance with Annex A, each retroreflective face of the road stud shall have a coefficient of luminous intensity (R) as classified (see Tables 6 to 8) multiplied by the appropriate colour factor given in Table 5:
-
class PRT 0
-
no performance determined;
-
class PRT 1
-
not less than Table 6;
-
class PRT 2
-
not less than Table 7;
-
class PRT 3
-
not less than Table 8.
The minimum R values for type 1, type 2 and type 3 road studs, as new, are given in Tables 6 to 8.
Table 6 - Class PRT 1 - Minimum R values for type 1, type 2 and type 3 read studs as new
Entrance angleββββH ββββV = 0° Observation angle αααα Min. Rmcd · lx-1
Type
1 2 3 ± 15° 2° 2 2,5 1,5 ± 10° 1° 10 25 10 ± 5° 0,3 ° 20 220 150
Table 7 - Class PRT 2 - Minimum R values for type 1, type 2 and type 3 road studs as new
Entrance angleββββH ββββV = 0° Observation angle αααα Min. Rmcd · lx-1
Type
1 2 3 ± 15° 2° 1,4 2,0 1,4 ± 10° 1° 7 10 7 ± 5° 0,3 ° 13 60 40 SIST EN 1463-1:2009
EN 1463-1:2009 (E) 9
Table 8 - Class PRT 3 - Minimum R values for type 1, type
2 and type 3 road studs as new
Entrance angle ββββH ββββV = 0° Observation angle αααα Min. Rmcd · lx-1
Type
1 2 3 ± 10° 1° 7 10 7 ± 5° 0,3 ° 13 60 40
5.3.1.3 Interpretation of the results
A road stud shall not be considered to fail the photometric requirements if the measured coefficient of luminous intensity at any one position of measurement is less than the values specified in Tables 4 or 6 to 8, multiplied by the respective colour factor given in Table 5 provided that:
a) the value is not less than 80 % of the specified minimum; and
b) the average of the left (-) and right (+) measurements for the specific angle is greater than the specified minimum.
5.3.2 Colorimetric requirements
When tested in accordance with Annex B, the retroreflected radiation of a road stud shall be classified as follows and have chromaticity co-ordinates that lie within the permitted regions defined in Table 9.
- class
NCR 0
-
no performance determined;
- class
NCR 1
-
as specified in Table 9.
Measurements shall be carried out in accordance with ISO 10526 and ISO 10527 (2° visual field) and with an entrance angle βV = 0°, βH = 5° and an observation angle of α = 0,3°.
SIST EN 1463-1:2009
EN 1463-1:2009 (E) 10 Table 9 - Corner points of chromaticity regions for retroreflected radiation of permanent and temporary road studs as new - class CNR1
Colour Pointxy White (uncoloured) 1 2 3 4 5 0,390 0,440 0,500 0,500 0,420 0,410 0,440 0,440 0,390 0,370 Yellow 1 2 3 4 0,539 0,530 0,580 0,589 0,460 0,460 0,410 0,410 Amber 1 2 3 4 0,549 0,543 0,590 0,605 0,450 0,450 0,395 0,395 Red 1 2 3 4 0,665 0,645 0,721 0,735 0,335 0,335 0,259 0,265 Green 1 2 3 4 0,030 0,228 0,321 0,302 0,385 0,351 0,493 0,692 NOTE 1
If two of the points lie on the spectrum locus line, they shall not be connected by a straight line but shall, in this case, be joined by the boundary of the spectrum locus.
NOTE 2
The night-time colours of retroreflective materials are at present being studied by the International Commission on Illumination (CIE TC 2.19). The limits given in this table are therefore of a provisional nature. It is proposed that these will be revised once TC 2.19 has completed its work.
5.4 Daytime visibility of temporary road studs
When tested in accordance with Annex C and using the measuring geometry 45/0 the road stud body shall have chromaticity coordinates that lie within the permitted regions defined in Table 10 and shall have the minimum luminance factor given in Table 10. Daytime visibility is classified as follows:
- class DCR 0
-
no performance determined;
- class DCR 1
-
as specified in Table 10.
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EN 1463-1:2009 (E) 11
Table 10 - Corner points of chromaticity regions and minimum luminance factor for temporary road stud bodies as new - class DCR 1 Colour PointxyLuminance factor ββββ White 1 2 3 4 0,350 0,300 0,290 0,340 0,360 0,310 0,320 0,370
≥ 0,75 Fluorescent green-yellow 1 2 3 4 0,380 0,320 0,380 0,460 0,620 0,540 0,480 0,540
≥ 0,75 Yellow 1 2 3 4 0,522 0,470 0,427 0,465 0,477 0,440 0,483 0,534
≥ 0,45
5.5 Resilience of depressible road studs When tested in accordance with Annex D depressible road studs shall show no breakdown of the depressing action and no permanent deformation of such an extent that the retroreflecting part is permanently obscured, even partially. 6 Road stud fixing All road studs shall be laid in accordance with the manufacturer’s instructions.
Removal of temporary road studs shall be possible without damage to the road surface and with a minimum of residue. 7 Marking All road studs shall be clearly and permanently marked. The following information shall be on the road stud or the packaging or the accompanying commercial documents using a hierarchical method in that order:
a) name or identifying mark of the manufacturer; b) the road stud type and performance classes as identified in Clauses 4 and 5 of this standard and Clause 6 of EN 1463-2:2000.
Minimum information on the product:
c) the name or identifying mark of the manufacturer.
On the packaging:
d) all information given on the product, plus e) the road stud type and performance classes as identified in Clauses 4 and 5 of this standard and Clause 6 of EN 1463-2:2000.
On the accompanying commercial documents:
f) none, if all information has already been supplied on the product and packaging; g) any information which has not already been given on the product or packaging plus all the information given on the product and packaging.
NOTE
When annex ZA of this European Standard is used, any information concerning Marking and Labelling in the framework of that Annex should be shown separately from the requirements of this clause (in EN 1463-1) and should be given within the format prescribed in the applicable clause in Annex ZA. In these circumstances, when specific information pertaining to this clause (in EN 1463-1) has already been supplied through the Annex ZA, it does not need to be duplicated. SIST EN 1463-1:2009
EN 1463-1:2009 (E) 12 Annex A (normative)
Test method for the determination of the coefficient of luminous intensity A.1 General The purpose of this test is to determine the coefficient of luminous intensity R (see CIE publication 17.4) of permanent or temporary retroreflecting road studs. The test may be carried out in the laboratory or in the field trial site.
A.2 Apparatus
A.2.1 Light source, which shall be a stable source and conform to the CIE Standard Illuminant A in its spectral power distribution. Its aperture shall be at most 10´;
A.2.2 Test piece holder, which shall be capable of holding a road stud such that the entrance angle can be varied in the horizontal plane from 0° to minimum 15° either side of the zero position.
A.2.3 Light measuring instruments
a) A photoelectric receptor having a circular aperture of at most 10´. It shall have the relative spectral response of the CIE Standard Photometric Observer. The receptor is placed above the light source and the observation plane is thus vertical.
b) An illuminance meter with appropriate sensitivity and good linearity of the photometric scale.
NOTE The distance between the road stud under test and the photoelectric receptor position will be determined by the physical size of available light sources and receptors and the required angles of observation. A minimum test distance of 10 m is recommended. SIST EN 1463-1:2009
EN 1463-1:2009 (E) 13
Key
1 Photometer head 2
Source 3
Reference point 4
Road stud 5 Angle of observation α 6
Entrance angle first axis β (V) 7
Entrance angle second axis β (H)
Figure A.1 - Angular reference used in the determination of R for retroreflecting road studs A.3 Procedure Measure the illuminance produced by the light source at the road stud reference point position perpendicular to the light source (see Figure A.1).
Place the road stud under test in position. Take readings of luminous intensity (I) at the required testing geometries. Ensure that there are no stray light influences.
Photometric calibration techniques and measurement precautions shall be in accordance with CIE publication
No. 54:1982.
A.4 Calculation and expression of results Calculate R using Equation A.1 or A.2:
I
R =
E⊥ (A.1) or SIST EN 1463-1:2009
EN 1463-1:2009 (E) 14
10³ M1 D²
R =
M2⊥ (A.2)
where:
I
is the luminous intensity of the road stud, in millicandelas;
E⊥
is the illuminance at the stud perpendicular to the light source, in lux;
R
is the coefficient of luminous intensity, in millicandelas per lux;
M1
is the reading of illuminance at the point of observation produced by the road stud;
M2⊥ is the reading of illuminance of source at the road stud reference point;
D
is the distance between the road stud and receptor, in meters.
SIST EN 1463-1:2009
EN 1463-1:2009 (E) 15 Annex B (normative)
Test method for the determination of chromaticity co-ordinates of retroreflected radiation B.1 General The purpose of this test is to determine the chromaticity co-ordinates of retroreflected radiation of retroreflectors incorporated in permanent or temporary road studs.
The basic instrumentation may follow either a spectral or a tristimulus method. However, a spectral technique is generally to be preferred.
B.2 Apparatus B.2.1 Light source, which shall be stable. For the tristimulus method it shall conform to the CIE Standard Illuminant A in its spectral power distribution.
B.2.2 Test piece holder, capable of holding a road stud at an entrance angle βH of 5°.
B.2.3 Colour measuring instruments, for spectral measurements use a spectroradiometer with good linearity of the scale and wavelength position. For the tristimulus method, use a colorimeter with a photoelectric receptor the spectral response of which closely matches the required tristimulus functions.
B.3 Procedure Set the apparatus and the road stud to be tested at an angle of observation α of 0,3° and an entrance angle βH of 5°.
Using the spectral method, take the readings of the light source (M2) and the road stud (M1) at intervals of 10 nm or less over the visible region of the spectrum.
Using the tristimulus testing method, take the readings of the X, Y and Z functions of the road stud.
Measurement techniques and measurement precautions shall be in accordance with CIE publication No. 54:1982. Colour functions and calculation methods shall be in accordance with ISO 10526 and ISO 10527.
B.4 Calculation and expression of results B.4.1 Spectral method
Calculate the coefficient of reflection of the retroreflector for each wavelength, λ, of measurement using Equation B.1.
M1(λ)
R(λ)
=
(B.1)
M2(λ)
SIST EN 1463-1:2009
EN 1463-1:2009 (E) 16 Calculate tristimulus values X, Y, Z using Equation B.2, B.3 and B.4.
780
_ X
=
k Σ R(λ)
S(λ)A
x(λ)
∆λ
(B.2)
380
780
_ Y
=
k Σ R(λ)
S(λ)A
y(λ)
∆λ
(B.3)
380
780
_ Z
=
k Σ R(λ)
S(λ)A
z(λ)
∆λ
(B.4)
380
where:
R(λ)
is the coefficient of spectral reflection;
S(λ)A
is the relative spectral power distribution of Standard Illuminant A; _
_
_ x(λ),
y(λ), z(λ) are the colour matching functions of a standard colorimetric observer;
k
is a constant.
Calculate chromaticity co-ordinates x and y using Equations B.5 and B.6:
X
x
=
(B.5)
X
+
Y
+
Z
Y
y
=
(B.6)
X
+
Y
+
Z
B.4.2 Tristimulus method
Calculate chromaticity co-ordinates x and y from the readings X, Y and Z using Equations B.5 and B.6. SIST EN 1463-1:2009
EN 1463-1:2009 (E) 17 Annex C (normative)
Test method for the determination of chromaticity co-ordinates and luminance factor for daytime visibility C.1 General The purpose of this test is to determine the chromaticity co-ordinates and the l
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