- 1 - ICS 43.040.20  
T 38 
 
 
 
 
National Standard  
of the People's Republic of China  
 
 
GB11564 - XXXX  
Replaces GB 11564 -1998  
 
 
Retro -reflectors for motor vehicles  
 
 
  
Draft for approval  
 
 
 
Issue Date: 20XX – XX – XX Implementation Date: 20XX – XX – XX 
 
 
Issued b y the General Administration of Quality Supervision, Inspection and 
Quarantine of the People's Republic of China and the  
Standardisation Administration of the People's Republic of China (SAC)  
 
          
 
 
- 2 - GB 11564 - XXXX  
 
Foreword  
 
 
The entire technical co ntents of this Standard are mandatory.  
 
This Standard corresponds to ECE R3 -2005; “The uniform provisions concerning the approval of 
retro -reflecting devices for power -driving vehicles and their trailers” of the United Nations 
Economic Commission for Europ e – UNECE, the consistency degree is non -equivalent. The main 
differences are as below:  
 
− scope 1 has been amended;  
− normative references have been added;  
− the following articles and appendix concerning the management aspect in ECE R3 have been 
withdrawn:  
3. certification application;  
4. certification mark;  
5. certification;  
8. production consistency;  
9. handling of production inconsistencies;  
10. official cease of production;  
11. the names and addresses of the technical department and management department which are 
responsible  for the certification tests;  
12. transitional provisions.  
 
Appendix 9, the endurable stability test and undiscoloured test of optical property;  
 
The main technical requirements of this Standard are: general provisions; specific provisions; and 
the test proced ures should be consistent with the abovementioned regulations.  
 
This Standard replaces GB11564 -1998, “Retro reflector for motor vehicles”. Compared with its 
previous edition, the main changes in this Standard are as below:  
− the relevant article “Definitions ” in Clause 3 of the previous edition has been amended;  
− the relevant article “Technical requirements” in Clause 4 of the previous edition has been 
amended;  
−  “Test methods” set out in Clause 5 of the previous edition has been amended;  
− the articles in Sectio n 4.5 of the previous edition: g) the endurable stability test of optical 
property, and h) undiscoloured test have been withdrawn;  
− the definitions, technical requirements and test methods for type IB and type IIIB retro 
reflectors have been added.  
 
Append ix A to this Standard is a normative appendix.  
 
The effective date of this Standard shall be the date on which GB 11564 -1998 is abolished. Retro -
reflectors that have recently applied for type inspection should be in accordance with the 
requirements specifi ed in this Standard.  
 
The transitional requirements of implementation of this Standard are:  
 - 3 - With regard to retro -reflectors that passed a type inspection before the implementation of this 
Standard, check the retro -reflectors against the relevant provision s in this edition of the Standard; if 
any factors do not conform to this edition of Standard, then a 24 -month transition period should be 
implemented.  
 
This Standard is proposed by the National Development and Reform Commission.  
 
This Standard is under the  jurisdiction of the National Technical Committee for Automobile 
Standardisation.  
 
The units responsible for drawing up this Standard:  
Shanghai Automotive Lamp Research Institute;  
Tianjin S.G. New Technology Development Company.  
 
Main drafters of this Sta ndard:  ZhouTao, YuPeiFeng, SunTiSheng.  
 
This Standard replaces the previously issued Standards:  
-GB11564 -89, GB 11564 -1998.  
 
 
 
 - 4 -           GB 11564 - XXXX  
Retro -reflectors for motor vehicles  
(Draft for approval)  
1 Scope  
This Standard sets the technical req uirements, test methods and inspection rules for retro -
reflectors for motor vehicles.  
 
This Standard applies to all types of retro -reflectors for use with motorcycles, motor vehicles 
and trailers.  
2 Normative References  
The provisions of the following doc uments become provisions of this Standard after being 
referenced. For dated reference documents, all later amendments (excluding corrigenda) and 
versions do not apply to this Part; however, the parties to the agreement are encouraged to study 
whether the l atest versions of these documents are applicable. For undated reference documents, 
the latest versions apply to this Standard.  
 
GB 4785 Installation regulations for car and trailer exterior illumination and light signal 
devices;  
 
GB/T 3978 Standard illumin ants and illuminating -viewing conditions;  
 
GB/T 10485 Road vehicles – Lighting and light -signalling devices – Environmental endurance.  
3 Definitions  
This Standard adopts the following definitions.  
3.1 Retro -reflection  
When the direction of the reflected li ght is close to the direction of the incident light, if the 
illumination angle changes within a large range, this specific performance can still be 
maintained.  
3.2 Retro -reflecting optical unit  
A retro -reflecting device unit that can create “retro -reflecti on”. 
3.3 Retro -reflecting device (hereafter abbreviated as retro -reflector)  
A device that is formed of one or more retro -reflecting optical units, which has the function of 
retro -reflection.  
3.4 Illuminating area of the retro -reflecting device  
Specified by  the manufacturer, the area that is enclosed by the outside edge of the retro -reflector 
optical system.  
3.5 Angular diameter of the retro -reflecting device  
The solid angle formed by the maximum illuminating area of the retro reflector and the centre of 
the light source or the centre of the light receiver.  - 5 - 3.6 (NC) Axis of reference  
Specified by the manufacturer, the reference direction used as angular field of view (H=0o, 
V=0o) during the luminosity measurement and the retro -reflector installation.  
3.7 (C) Centre of reference  
Specified by the manufacturer, the intersection point of the axis of reference and illuminating 
area.  
3.8 () Angle of divergence  
The included angle formed by the connecting line from the centre of reference to the light 
receiver (viewi ng measurement spot) and the connecting line from the centre of reference to the 
light source.  
3.9 () Illumination angle  
The included angle formed by the connecting line from the centre of reference to the centre of 
light source and the axis of reference.  
3.10 () Angle of rotation  
The angle which is passed by the retro -reflector from a certain location, rotated around the axis 
of reference.  
3.11 (E) Illumination of the retro -reflecting device  
The measured illumination value when the incident light is vert ically illuminating on a plane 
where the centre of reference of the retro -reflector is located.  
3.12 (CIL) Coefficient of luminous intensity  
When the retro -reflector is under a certain illumination angle, angle of divergence and angle of 
rotation, the spec ific value between the luminescent intensity of the reflected light and the 
illumination intensity of the retro -reflector at the angle of divergence direction.  
3.13 Type IB or type IIB retro reflectors  
Retro -reflectors combined with other signal lamps that  are embedded into the vehicle body.  
4 Technical requirements  
4.1 General requirements  
4.1.1  Under ordinary service conditions, the retro -reflector should function correctly. Its outer 
surface should not be rough and should be easily cleaned; any surface p rotrusion should not 
impede the retro -reflector from being cleaned. In addition, there should be no design or 
manufacturing faults that might affect the full functionality of the retro -reflector.  
 
4.1.2  Any parts or components of the retro -reflector should  not be easily disassembled; its 
optical unit cannot be changed.  
 
4.1.3 With regard to type IVA retro -reflectors, a fixed connecting mode on the motor vehicle 
should be ensured to be firm and durable.  
 - 6 - 4.1.4  Under ordinary service conditions, the inside su rface of retro -reflectors should not have 
any entry holes which could come into contact with the external world.  
4.2 Provisions for shapes, dimensions and structures  
4.2.1  Retro -reflectors are divided into 3 types according to their luminosity characterist ics: type 
IA or type IB, type IIIA or type IIIB (for trailer purpose) and type IVA.  
 
4.2.2 The outside shapes of the illumination area for type IA or type IB retro -reflectors should 
be simple, and within normal viewing distance should not be easily confuse d with commonly 
adopted alphabet letters, digits or triangles; however, shapes similar to simple alphabet letters 
such as O, I, U or digital number 8 may be used.  
 
4.2.3  The outside shapes of the illumination area of type IIIA or type IIIB retro -reflectors  should 
be equilateral triangles; if the installation mark “Top” is marked on one of the vertex angles, 
then the vertex of this angle should point upwards. The centre of the retro -reflector is allowed to 
have (or not) a blank triangle -shaped non -reflecting  area (the corresponding sides of the inner 
triangle and outer triangle should be parallel), the length of the side (A) for the outer triangle 
should be within a range of 150mm to 200mm, but the width of the reflection area (B) along the 
vertical direction  should be at least 20% of the side length of the outer triangle. The reflecting 
area can be continuous or discontinuous; the minimum internal distance of the discontinuous 
part (C) should not be greater than 15mm. The number of the reflecting partitions o n each 
triangle side (include the vertex angle) should be at least 4 places, and each reflecting partition 
can only be replaced with the type 1A retro reflectors that have passed the type inspection. See 
diagram 1 for the required specific dimensions.  
 
 
 
Diagram 1 Outer shape sketch diagram of the illumination area for IIIA and IIIB retro -
reflectors  
 
4.2.4 The outside shape of the illumination area of type IVA retro -reflectors should be simple, 
within normal viewing distance should not be easily confused w ith commonly adopted alphabet 
letters, digits or triangles; however similar shapes to simple alphabet letters such as O, I, U or 
- 7 - digital number 8 may be used. The size of the illumination areas for this type of retro -reflector 
should be at least 25 cm2. 
 
4.2.5 The retro -reflector is formed by optical units and a coloured filter, but the product design 
should ensure the retro -reflector will not scatter light by itself under usual service conditions; 
the colours required by the colour filter cannot be obtaine d by colour -paint or varnish lacquer.  
4.3 Chromaticity of the retro -reflector  
4.3.1  The chromaticity of the retro -reflector should be red, amber or transparent colourless 
(white).  
 
4.3.2  When the retro -reflector uses a light source to illuminate (colour te mperature as 2856K), 
which is equivalent to the Standard light source A as specified in GB/T 3978, the angle of 
divergence () of the retro -reflector should be 20', the illumination angle () of the retro -
reflector should be V=H=0o (the illumination angle of the transparent colourless retro -reflector 
should be   as V= ±5oH=0o), the colorimetric characteristics of the reflected light should be in 
line with the requirements set out in Section 4.2.4 of GB 4785.  
 
4.3.3  Selective reflecting of the transparent co lourless retro -reflector should not occur, which 
means when illuminated with a light source which is equivalent to the Standard light source A 
specified in GB/T 3978, the changes of the colorimetric angular coordinate x and y of its 
reflected light should not be greater than 0.01.  
4.4 Retro -reflector luminosity (CIL va lue) 
4.4.1  Type IA, IB and IIIA, IIIB  
4.4.1.1 The CIL values of red retro -reflectors should not be less than the values specified in 
Table 1.  
Table 1     mcd/lx  
5 Illumination Angle   
Vertical V  0o ±10 o ±5o Retro -
Reflector 
Type  Angle of 
Divergence  
 
Horizontal H  0o 0o ±20o 
20' 300 200 100 IA,  
IB 1o30' 5 2.8 2.5 
20' 450 200 150 IIIA,  
IIIB 1o30'  
 
CIL 
12 8 8 
Note: when the three -dimensional angle is formed with the reference cent re as the 
vertex, and with (V= ± 100, H= 00) and (V= ± 50, H= ± 200) as the boundary, the 
CIL values of the red retro -reflectors should not be less than the values specified 
in the last two columns.  
 
4.4.1.2  The CIL values of type IA and IB amber coloured  retro -reflectors should not be less than 
the values specified in Table 1 multiplied by a factor of 2.5.  
 
4.4.1.3  The CIL values of type IA and IB transparent colourless retro -reflectors should not be - 8 - less than the values specified in Table 1 multiplied by  a factor of 4.  
 
4.4.2  The CIL values of type IVA retro -reflectors should not be less than the values specified in 
Table 2.  
Table 2  
Illumination Angle   
Vertical V  0o ± 10o 0o 0o 0o 0o Colour  Angle of 
Divergence  
 
Horizontal H  0o 0o ± 20o ± 30o ± 40o ± 50o 
20' 1800  1200  610 540 470 400 White  
1o30' 34 24 15 15 15 15 
20' 1125  750 380 335 290 250 Amber  
1o30' 21 15 10 10 10 10 
20' 450 300 150 135 115 100 Red 
1o30'  
 
 
CIL 
9 6 4 4 4 4 
4.5 Environment test for retro -reflectors  
The retro reflec tors should withstand the following environment tests:  
4.5.1  Penetration resistance test (water and dirt)  
4.5.2  Impact resistance test (test should only be carried out on type IVA retro -reflectors);  
4.5.3 Oil resistance test;  
4.5.4  Corrosion resistance tes t; 
4.5.6  Reflector back surface abrasion test  
(This test should be performed only on retro -reflectors with open type or demountable type 
reflector back);  
4.5.6  High tempera ture resistance test.  
5 Test methods  
5.1 With regard to the provisions specified in  Section 4.1 and Section 4.2, perform a visual 
inspection.  
5.2 Colorimetric test for retro -reflectors  
5.2.1  Carry out visual colorimetry using a standard colorimetric sample plate and test sample or 
test sample plate, illuminated under a light source equiv alent to standard light source A specified 
in GB/T 3978, so as to qualitatively determine whether the colorimetric is in line with the 
Standard requirements.  
 - 9 - 5.2.2  If there are any disagreements with the qualitative determination of the visual colorimetry , 
then according to the requirements specified in Section 4.3.2 or Section 4.3.3, using the 
quantitative method measure the colorimetric angular coordinate and determine whether it is in 
line with the Standard requirements.  
5.3 Photometric test for retro -reflectors  
5.3.1  The photometric test of the retro -reflector should conform to diagram 2.  
 
Diagram 2  Photometric test for retro -reflectors  
5.3.2  The axis of reference (NC) is provided by the retro reflector manufacturer, and the 
direction of this axis shal l be the direction of  at V=H=0o in Table 1 and Table 2. With regard to 
multiple axes of references, the photometric test measurements should be carried out 
respectively on different axes or the outside edge axis.  
5.3.3  With regard to type IA and type IB retro -reflectors, consider only the illuminating area 
which is within a diameter of 200mm of the circle area, the illuminating area itself should set a 
limit as 100 cm2, however the surface of the optical unit of the retro -reflector is not necessarily 
this size - the retro -reflector manufacturer should specify the boundaries of the usable 
illuminating area. With regard to type IIIA, type IIIB and type IVA retro -reflectors, the 
dimension of the illuminating area should have no limit, and the entire illuminat ing area should 
be taken into consideration.  
5.3.4  When  is at the condition of V=H=00, measure the CIL value of the retro -reflector to 
determine if a specular reflection effect occurs; the retro -reflector should rotate slightly. If a 
specular reflection effect occurs, readings should be carried out when H=00 and  is in the range 
of V= ± 5o. Adopt a location that can minimise the effect on the CIL values upon the premise of 
eliminating the effects of specular reflection.  
5.3.5  With regard to retro -reflect ors that do not have the installation marking “TOP”, measure 
the CIL values when  is V=H=00 (or the angle value specified in Section 5.3.4), and =20', 
should rotate around the axis of reference, to determine its maximum CIL values (at the moment 
 = 0o). The CIL value should be in line with the specified value. When measuring CIL values 
which correspond to other ,  values, if any value is not in line with the specified value, then 
modifications in the range of  = ±50 are allowed.  
5.3.6  With regard to r etro-reflectors that have the installation marking “TOP”, measure the CIL 
- 10 - values when  is V=H=0o (or the angle value specified in Section 5.3.4), and =20', only allow  
in the range of  ±5o to have modifications, so as to conform to the Standard values.  
5.3.7  When  is V=H=0o and =0o, and the CIL value exceeds 50% of the specified value, then 
the CIL values correspond to other ,  values, and measurements should be carried out under 
the condition of  = 0o. 
5.4 Environment test for retro -reflectors  
5.4.1 Penetration resistance test (water and dirt)  
5.4.1.1 Water  permeating resistance test  
5.4.1.1.1  Completely soak (20mm under the water surface) the retro -reflector (retro -reflector 
combined with the lamp, any non -reflecting components which can be dismoun ted should be 
removed) with the whole illuminating area facing upwards, in water at a temperature of 50oC ± 
5oC for 10 minutes, then rotate the retro -reflector 180o so that the illuminating area is facing 
downwards (the back of the retro -reflector should a lso be 20mm under the water surface), soak 
for a further 10 minutes, then using the same method immediately soak the retro -reflector in 
water a temperature of 25oC ± 5oC and carry out the same two periods of 10 minute tests.  
5.4.1.1.2  After the above test is completed perform a visual inspection to check whether the 
retro -reflector has absorbed any water. If it has, then the retro -reflector is deemed to have failed 
this test.  
5.4.1.1.3  If the visual inspection reveals that the retro -reflector did not absorb  any water, or if 
there is any discrepancy with regard to the inspection results, first gently shake the retro -
reflector to remove any excess water, then repeat the test and measure the CIL value (only when 
 is V=H=0o, =20'). If the result is in line wit h the requirements set out in Section 4.4, then the 
retro -reflector is deemed to have passed this test.  
5.4.1.2  With regard to type IB and type IIIB retro -reflectors, the manufacturer should choose 
from the following methods as a replacement of the test de scribed in Section 5.4.1.1.  
5.4.1.2.1 Water resistance test  
This test measures the humidity resistance and drain capacity of the drain hole of the test 
sample.  
5.4.1.2.1.1  Water spray test equipment  
5.4.1.2.1.1.1 The diameter of the installation testing bl ock should be at least 140mm, and should 
be able to rotate around the centre line.  
5.4.1.2.1.1.2  Prepare a water spray tube inside the test case, its centre line pointing downwards 
and with the vertical axis of the horizontal turntable sample installation block forming an angle 
of 45o ± 5o; the water from the water spray tube should cover the sample, and the water speed 
should be 2.5+1.6
-0mm/minute (the height of the water collecting device should be 100mm, the 
inner diameter should be at least 140mm).  
5.4.1.2.1.1  Test method  
5.4.1.2.1.1.1  Fix the sample of which the primary CIL value has already been measured onto the 
centre of the sample installation block and, according to vehicle load situation, carry out 
protection, open all the drain holes and openings . 
5.4.1.2.1.1.2  The sample installation block should rotate around the centre line with a speed of 
4.0 ± 0.5 revolutions per minute.  - 11 - 5.4.1.2.1.1.3  If the retro -reflector is combined with the signal function and illuminating 
function, these functions should  be turned on according to the normal voltage. One cycle is 
specified as 5 minutes turned on, and 55 minutes turned off.  
5.4.1.2.1.1.4  The test time period is 12 hours (12 cycles)  
5.4.1.2.1.1.5  Sample drainage - after all of the cycles have finished, stop the turntable and the 
operation of the water spray tube. The door of the water spray case should be shut; the sample 
drainage should be 1 hour.  
5.4.1.2.1.1.6 Determining the results  
After the test, moisture gathering inside the sample is allowed, but water  should not drip off the 
sample when patted or tipped. Use a dry cotton cloth to wipe the surface of the retro -reflector 
clean, then re -take the CIL measurement (only when  is V=H=0o, =20'). The results should 
meet the requirements mentioned above in Sec tion 4.4.  
5.4.1.2.2 Dust -proof test  
This test measures the dust -proof capacity of the test sample.  
5.4.1.2.2.1 The equipment of the dust proof test  
5.4.1.2.2.1.1  Test case, inside of the test case should be a cube with side -length as 0.9m ~ 1.5m, 
the botto m of the test case should be funnel shaped, for the favour of dust collecting. The 
volume of the inside case (funnel shaped bottom is not included) should be a maximum of 2m3, 
and put in 3 ~ 5kg testing dust. The test case should make the dust completely d iffused by high 
pressure air or a blowing machine.  
5.4.1.2.2.1.2  Dust should be in accordance with the requirements specified in GB/T 10485.  
5.4.1.2.2.2  Test method  
5.4.1.2.2.2 .1 The protection test should be carried out according to the vehicle load, the distance 
between the sample to the case wall being at least 150mm. If the length of the test sample is 
longer than 600mm, then the test sample should be placed horizontally and centrally inside the 
test case.  
5.4.1.2.2.2.2  Open the drain hole or other open ings for 5 hours, make the dust lift every 15 
minutes, for 2 ~ 15 seconds each time.  
5.4.1.2.2.3  Determining the results  
Using a piece of dry cotton cloth, wipe the surface of the retro -reflector clean, then re -take the 
CIL value measurement (only when  i s V=H=0o, =20'). The results should meet the 
requirements mentioned above in Section 4.4.  
5.4.2 Impact resistance test  
Tightly fix the test retro -reflector onto the test equipment, in the same way it is fixed onto a 
vehicle; the illuminating area should b e facing upwards and should be in room temperature. 
From a height of 0.76m, allow a smooth solid steel ball with a diameter of 13mm to fall freely 
once to the centre part of the illuminating area. The test equipment can have a vertical lead 
function toward s the steel ball, but should not impede the ball from free falling. After the test, 
the illuminating area of the retro -reflector should not be cracked.  
5.4.3 Oil resistance test  
5.4.3.1  Lubricating oil resistance test  - 12 - Using a piece of cotton cloth dipped w ith clean lubricating oil gently wipe the outer surface of 
the retro -reflector, in particular the illuminating area, for about 5 minutes. Wash the surface, 
then re-take the CIL measurement (only when  is V=H=0o, =20'); the results should meet the 
require ments mentioned above in Section 4.4.  
5.4.3.2  Fuel oil resistance test  
Using a piece of cotton cloth dipped with 70% volume heptane  and 30% methylbenzene gently 
wipe the outer surface of the retro -reflector, especially the illuminating area, for 5 minutes.  
Carry out a visual inspection to check the surface; with the exception of slight cracks, which are 
permitted, no noticeable changes should appear on the surface.  
5.4.4 Corrosion resistance test  
5.4.4.1  The retro -reflector (retro -reflectors which are combi ned with the lamp, any non -
reflecting components which can be dismounted should be removed), with the whole reflector 
in working condition, should be placed into a test case to withstand 50 hours of the salt -spray 
test. Spray for 24 hours, leave an intermi ssion of 2 hours, and then spray again for 24 hours 
(during the 2 hour intermission period allow the sample to dry naturally inside the test case). 
The test temperature should be 350C ± 20C. The weight percentage of the salt -spray solution 
should be: 20 ± 2% sodium chloride, 80% water, foreign substances should not exceed 0.02%.  
5.4.4.2  After the test, wash clean any sediment off the surface of the sample using clean water, 
then rinse in water (foreign substances in the water should not exceed 0.02%). The t emperature 
of the rinsing water should not exceed 35oC. Next, leave inside the laboratory for 1 hour to 
recover, then check the sample - there should not be any noticeable corrosion marks that might 
damage the performance of the retro -reflector. When the m ain components are metal, a more 
thorough inspection should be carried out for corrosion on the metal.  
5.4.5 Abrasion test on retro -reflector back surface  
To carry out the abrasion test, use a hard nylon brush to brush clean the back surface of the 
retro -reflector, then use a piece of cotton cloth dipped with a volume percentage of 70% heptane 
and 30% methylbenzene to wipe, or completely wet, the surface for 1 minute; wait until it is dry 
and volatilised, then use a hard nylon brush to brush the back surfac e of the retro reflector again, 
then use ink to paint the back surface. Re -take the CIL value measurements (only when  is 
V=H=00, =20'); the results should meet the requirements mentioned above in Section 4.4.  
5.4.6 High temperature resistance test  
Place  the retro -reflector in an environment with a dry atmosphere and a surrounding 
temperature of 65oC± 2oC for 48 hours. After the test, check the retro -reflector; in particular, 
there should be no noticeable cracks or deformations of the optical components.  
6 Inspection rules  
6.1 Determination of same model retro -reflectors  
If there are no differences when compared to the following main factors, the retro -reflectors are 
deemed to be of the same model:  
a) the name of the goods and the trademarks;  
b) one or mor e of the retro -reflecting optical units of the product is the same as the - 13 - Standard sample.  
c) there may be some differences, but presented as symmetrical, or suitable to fit one on 
the right -side of the vehicle, another can be fitted on the left -side of th e vehicle.  
6.2 The retro reflectors should pass type inspection and production consistency inspection. If the 
retro reflectors are in accordance with the corresponding provisions specified in Section 6.2.1 
and Section 6.2.2 below, then the retro reflector has passed the type inspection or production 
consistency inspection.  
6.2.1  Type inspection of the retro reflector  
6.2.1.1  The determination procedures of the same model retro reflectors should be according to 
the provisions mentioned in Section 6.1 above.  
6.2.1.2  The manufacturers should provide:  
a) Triplicate drawings on paper, which are sufficient to identify the characters of the 
certain model of the retro -reflectors, including the geometric dimensions and the 
tolerance of the retro -reflectors, as well as the fitting locations on the vehicles, a xis of 
reference and centre of reference.  
b) A copy of the brief technical instructions concerning the materials out of which the 
optical unit of the retro -reflectors is made.  
c) The colour of the retro -reflector sample should be decided by the manufacture r, who 
should provide 10 samples. If, at the same time or at a later date, an increase in colours 
in the type inspection is required, a further 2 samples for each increased corresponding 
colour should be provided.  
6.2.1.3  According to the test procedures s pecified in Section 5.1, carry out a visual inspection to 
check the 10 samples; the results should all be in accordance with the provisions specified in 
Sections 4.1 and 4.2.  
6.2.1.4  According to the test procedures specified in Section 5.2, perform a colo rimetric test 
method to check the 10 samples; the results should all be in accordance with the provisions 
specified in Section 4.3.  
6.2.1.5  According to the test procedures specified in Section 5.4.6, perform a high temperature 
resistance test to check the  10 samples; the results should be in accordance with the provisions 
specified in Section 5.4.6.  
6.2.1.6 According to the test procedures specified in Section 5.3, follow the photometric test 
method to check the CIL values of the  10 samples (only when  is V=H=0o, and  = 20'); the 
results of the CIL values should be in accordance with the provisions specified in Section 4.4.  
Select the maximum CIL value and minimum CIL value of the samples to carry out entire CIL 
value measureme nts; the measured values should be in accordance with the provisions, and the 
type inspection technical management department should keep the 2 samples in order to carry 
out further inspections when required.  
6.2.1.7  Randomly select 4 of the 8 remaining sa mples left over from the photometric test, and 
divide them into 2 groups of 2 samples, then carry out the following tests:  
Group 1: invading resistance test and oil resistance test;  
Group 2: corrosion resistance test, abrasion test on back surface of the r etro-reflectors 
and impact resistance test;  
The specified test procedures should be carried out by according to Appendix A to this Standard - 14 - (normative appendix).  
6.2.2  Production consistency inspection of the retro -reflectors  
6.2.2.2  With regard to the ret ro-reflectors that passed the type inspection, select samples from a 
batch of products using the random sampling method so as to determine the consistency of the 
production.  
6.2.2.3  The geometric dimensions and tolerances of the randomly selected samples s hould be in 
accordance with the provisions specified in the drawing paper of Section 6.2.1, which is 
provided for type inspection application.  
6.2.2.4 One sample only should be randomly selected. With regard to the entire coefficient of 
luminous intensity,  CIL values should be at least equal to 80% of the values specified in Section 
4.4; otherwise, random sampling should be carried out on a further 5 samples, the average value 
of the measured 5 CIL values should be at least equal to the values specified in Section 4.4, but 
any one of the measured values should not be lower than 50% of the specified value.  
 - 15 - GB11564 -xxxx  - 16 - Appendix A  
(Normative Appendix)  
Test Procedure Table for Type Inspection  
Sample s Serial 
Number  Corresponding 
Articles  Requirements and 
Methods  a b c d e f g h i j 
1 4.1, 4.2,  
5.1 Visual inspection: 
provisions of 
general 
requirements, 
shapes, 
dimensions and 
structures   
          
2 4.3, 
5.2.1  Visual colorimetry 
inspection: 
provisions of 
colorimetric            
3 4.3, 
5.2.2  Colorimetric 
angular coordinate 
determination: 
discrepancy  with 
colorimetric   *         
4 4.5.6,  
5.4.6  High temperature 
resista nce test: 
650C ± 20C for 48 
hours, visual 
inspection to 
check for cracks 
and deformations            
5 4.4, 
5.3 Provisions for 
photometric: only 
when  is V=H=00 
and =20', 
measure CIL 
values            
6 4.4, 
5.3, 
6.2.1.6  Provisions fo r 
photometric: 
measure all CIL 
values    * *       
7 4.5.1,  
5.4.1.1,  
or 
5.4.1.2  Invading 
resistance test: 
with regard to 
type IB and type 
IIIB retro -          - 17 - reflectors, allow to 
choose from water 
resistance test and 
dust proof test  
8 4.5.3,  
5.4.3.1  Fuel oil resistance 
test: after 5 
minutes use visual 
inspection to 
check if there is 
any noticeable 
changes            
9 4.5.3,  
5.4.3.2  Lubricating oil 
resistance test: 
after 5 minutes, 
re-measure CIL 
value ( is 
V=H=00 and 
=20')            
10 4.5.4,  
5.4.4  Corrosion 
resistance test: salt 
spray for 24 hours, 
then allow an 
intermission of 2 
hours; salt spray 
again for another 
24 hours, then 
perform a visual 
inspection to 
check for 
noticeable 
corrosion marks            
11 4.5.5,  
5.4.5  Abrasion test o n 
back surface of 
retro -reflectors: 
paint ink on the 
back surface of 
the retro -reflector 
for 1 minute, re -
measure the CIL 
value ( is 
V=H=00 and 
=20')            
12 4.5.2,  
5.4.2  Impact resistance 
test: 0.76m. Allow 
a13mm steel ball 
to freefall, then 
perform a visual 
inspection to           - 18 - check for cracks 
(test only for type 
IVA retro -
reflectors)  
13 6.2.1.6  Type inspection 
technical 
management 
department to 
keep sample            
Note: samples with * are assumptive samples