Regulation No. 4-00

Name:Regulation No. 4-00
Description:Rear Registration Plate Lamps (not Motorcycles).
Official Title:Uniform Provisions Concerning the Approval of: Devices for the Illumination of Rear Registration Plates of Power-driven Vehicles and their Trailers.
Country:ECE - United Nations
Date of Issue:1964-09-23
Amendment Level:00 Series, Supplement 17
Number of Pages:28
Vehicle Types:Agricultural Tractor, Bus, Car, Component, Heavy Truck, Light Truck, Trailer
Subject Categories:Lighting and Light Signalling Equipment
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Keywords:

regulation, approval, light, device, supplement, force, amendments, source, plate, devices, series, lamps, type, registration, date, entry, annex, lamp, illuminating, requirements, category, rear, conformity, approved, surface, mark, module, number, granted, manufacturer, case, production, original, filament, sources, accordance, vehicle, paragraph, minimum, tests, sampling, marking, equipped, grouped, time, photometric, contracting, applying, test, made

Text Extract:

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E/ECE/324
) Add.3/Rev.3/Amend.1
E/ECE/TRANS/505 )
June 22, 2015
STATUS OF UNITED NATIONS REGULATION
ECE 4-00
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
DEVICES FOR THE ILLUMINATION OF REAR REGISTRATION PLATES OF
POWER-DRIVEN VEHICLES AND THEIR TRAILERS
Incorporating:
Supplement 5 to the 00 series of amendments
Date of Entry into Force: 11.02.96
Supplement 6 to the 00 series of amendments
Date of Entry into Force: 15.01.97
Supplement 7 to the 00 series of amendments
Date of Entry into Force: 18.01.98
Supplement 8 to the 00 series of amendments
Date of Entry into Force: 13.01.00
Supplement 9 to the 00 series of amendments
Date of Entry into Force: 26.08.02
Supplement 10 to the 00 series of amendments
Date of Entry into Force: 26.02.04
Corr. 1 to Supplement 10 to the 00 series of amendments
Dated: 04.03.04
Corr. 2 to Supplement 10 to the 00 series of amendments
Dated: 18.01.08
Supplement 11 to the 00 series of amendments
Date of Entry into Force: 04.07.06
Supplement 12 to the 00 series of amendments
Date of Entry into Force: 02.02.07
Supplement 13 to the 00 series of amendments
Date of Entry into Force: 11.07.08
Supplement 14 to the 00 series of amendments
Date of Entry into Force: 15.10.08
Supplement 15 to the 00 series of amendments
Date of Entry into Force: 09.12.10
Supplement 16 to the 00 series of amendments
Date of Entry into Force: 15.07.13
Corr. 1 to Revision 3 to the 00 series of amendments
Dated: 24.03.15
Supplement 17 to the 00 series of amendments
Date of Entry into Force: 15.06.15

REGULATION NO. 4-00
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF DEVICES
FOR THE ILLUMINATION OF REAR REGISTRATION PLATES
OF POWER-DRIVEN VEHICLES AND THEIR TRAILERS
CONTENTS
Regulation
Scope
1. Definitions
2. Application for Approval
3. Markings
4. Approval
5. General Specifications
6. Colour of Light
7. Incidence of the light
8. Measuring Procedure
9. Photometric Characteristics
10. Conformity of Production
11. Penalties for Non-conformity of Production
12. Production Definitively Discontinued
13. Transitional Provisions
14. Names and Addresses of Technical Services Conducting Approval Tests, and of Type Approval
Authorities

SCOPE
REGULATION NO. 4-00
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF DEVICES
FOR THE ILLUMINATION OF REAR REGISTRATION PLATES
OF POWER-DRIVEN VEHICLES AND THEIR TRAILERS
This Regulation applies to rear registration plate lamps for vehicles of Categories M, N, O,
and T .
1. DEFINITIONS
For the purpose of this Regulation:
1.1. "Rear registration plate lamp" means the device for the illumination of rear registration
plates, hereinafter called "illuminating device", which illuminates the rear registration plate by
reflection. For the approval of this device, the illumination of the space to be occupied by the
plate is determined. The illuminated areas are grouped into the following categories:
1.1.1. Category 1a: illuminated area for use on a vehicle mounted a registration plate, the size of
which is 340 × 240mm or less (tall plate).
1.1.2. Category 1b: illuminated area for use on a vehicle mounted a registration plate, the size of
which is 520 × 120mm or less (wide plate).
1.1.3. Category 1c: illuminated area for use on a vehicle mounted a registration plate, the size of
which is 255 × 165mm or less (plate for agricultural or forestry tractors).
1.1.4. Category 2a: illuminated area for use on a vehicle mounted a registration plate, the size of
which is 330 × 165mm or less.
1.1.5. Category 2b: illuminated area for use on a vehicle mounted a registration plate, the size of
which is 440 × 220mm or less.
1.2. The definitions 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.
1.3. "Rear registration plate lamps of different types" means lamps which differ in such
essential respects as:
(a)
(b)
The trade name or mark;
The characteristics of the optical system, (levels of intensity, light distribution angles,
category of filament lamp, light source module, etc.);

3.4. With the exception of lamps with non-replaceable light sources it must bear a clearly legible
and indelible marking indicating:
(a)
(b)
The category or categories of filament lamp(s) prescribed; and/or
The light source module specific identification code.
3.5. In the case of lamps with light source module(s), the light source module(s) shall bear:
3.5.1. The trade name or mark of the applicant; this marking must be clearly legible and indelible;
3.5.2. The specific identification code of the module; this marking must be clearly legible and
indelible. This specific identification code shall comprise the starting Letters "MD" for
"MODULE" followed by the approval marking without the circle as prescribed in
Paragraph 4.4.1. below and, in the case several non-identical light source modules are used,
followed by additional symbols or characters; this specific identification code shall be shown in
the drawings mentioned in Paragraph 2 a) above.
The approval marking does not have to be the same as the one on the lamp in which the
module is used, but both markings shall be from the same applicant.
3.5.3. The marking of the rated voltage and rated wattage.
4. APPROVAL
4.1. If the two samples of a type of illuminating device submitted in accordance with Paragraph 2
above satisfy the provisions of this Regulation, approval shall be granted.
4.2. An approval number shall be assigned to each type approved. Its first two digits (at present 00
for the Regulation in its original form) shall indicate the series of amendments incorporating the
most recent major technical amendments made to the Regulation at the time of issue of the
approval. The same Contracting Party may not assign this number to another type of device
covered by this Regulation, except in the case of an extension of the approval to a device
differing only in the colour of the light emitted.
4.3. Notice of approval or of extension or refusal of approval of a type of illuminating device
pursuant to this Regulation shall be communicated to the Parties to the 1958 Agreement
applying this Regulation, by means of a form conforming to the model in Annex 2 to this
Regulation.
4.4. Every illuminating device conforming to a type approved under this Regulation shall, in addition
to the markings referred to in Paragraphs 3 a) and c) above, bear an international approval
mark in conformity with Annex 1, consisting of:
4.4.1. A circle surrounding the Letter "E" followed by a number identifying the country which has
granted approval;
4.4.2. An approval number, in the vicinity of the circle;
4.4.3. The following additional symbol: the Letter "L":

5. GENERAL SPECIFICATIONS
Each device shall satisfy the provisions of Paragraph 9
5.1. The devices for the illumination of rear registration plates shall be so constructed that the whole
surface of the plate will be visible within the angles given in Annex 4.
5.2. All measurements shall be made with the standard uncoloured or coloured light source of the
category prescribed by the manufacturer, supplied with the voltage:
(a)
(b)
In the case of filament lamp(s), that is necessary to produce the reference luminous flux
required for that category of filament lamp;
In the case of LED light source(s) of 6.75V, 13.5V or 28.0V, the luminous flux value
produced shall be corrected. The correction factor is the ratio between the objective
luminous flux and the value of the luminous flux found at the voltage applied.
All measurements on the devices with non-replaceable light sources shall be made at 6.75V,
13.5V or 28.0V respectively.
5.3. In the case of light sources supplied by a special power supply, the above test voltages shall be
applied to the input terminals of that power supply. The test laboratory may require from
manufacturer the special power supply needed to supply the light sources.
5.4. For any rear registration plate illuminating device, except those equipped with filament lamp(s),
the luminance values measured after one minute and after 30min of operation shall comply
with the minimum requirements.
The luminance distribution after one minute of operation can be calculated by applying at each
test point the ratio of luminance values measured in one point after one minute and after 30min
of operation.
5.5. In the case of light source modules, it shall be checked that:
5.5.1. The design of the light source module(s) shall be such as:
(a)
(b)
That each light source module can only be fitted in no other position than the designated
and correct one and can only be removed with the use of tool(s).
If there are more than one light source module used in the housing for a device, light
source modules having different characteristics cannot be interchanged within the same
lamp housing.
5.5.2. The light source module(s) shall be tamperproof.
5.5.3. A light source module shall be so designed that regardless of the use of tool(s), it shall not be
mechanically interchangeable with any replaceable approved light source.

9. PHOTOMETRIC CHARACTERISTICS
At each of the points of measurement shown in Annex 3, the illuminance B shall be at least
equal to 2.5cd/m .
The gradient of the luminance between the values B and B , measured at any two Points 1
and 2 selected from among those mentioned above, shall not exceed 2 × Bo/cm, Bo being the
minimum luminance measured at the various points, that is to say:
10. CONFORMITY OF PRODUCTION
B − B
≤ 2 × Bo / cm
dis tance 1 − 2 in cm
The conformity of production procedures shall comply with those set out in the Agreement,
Appendix 2 (E/ECE/324-E/ECE/TRANS/505/Rev.2), with the following requirements:
10.1. Devices for the illumination of rear registration plates (henceforth called devices), approved
under this Regulation shall be so manufactured as to conform to the type approved by meeting
the requirements set forth in Paragraphs 5, 6 and 9 above. If there is more than one device
necessary, then in the following text a device means a set of devices.
10.2. The minimum requirements for conformity of production control procedures set forth in Annex 6
to this Regulation shall be complied with.
10.3. The minimum requirements for sampling by an inspector set forth in Annex 7 to this Regulation
shall be complied with.
10.4. The Authority which has granted type approval may at any time verify the conformity control
methods applied in each production facility. The normal frequency of these verifications shall
be once every two years.
11. PENALTIES FOR NON-CONFORMITY OF PRODUCTION
11.1. The approval granted in respect of an illuminating device pursuant to this Regulation may be
withdrawn if the requirements laid down above are not complied with.
11.2. If a Party to the Agreement which applies this Regulation withdraws an approval it has
previously granted, it shall forthwith notify the other Contracting Parties applying this Regulation
thereof by means of a communication form conforming to the model in Annex 2 to this
Regulation.
12. PRODUCTION DEFINITIVELY DISCONTINUED
If the holder of the approval completely ceases to manufacture an illuminating device under this
Regulation, he shall inform thereof the Authority which granted the approval. Upon receiving
the relevant communication that Authority shall inform the other Parties to the Agreement which
apply this Regulation thereof by means of a communication form conforming to the model in
Annex 2 to this Regulation.

ANNEX 1
ARRANGEMENT OF APPROVAL MARKS
Model A
a = 5mm min
Figure 1
(Marking For Single Lamps)
The device bearing the approval mark shown above is a device for the illumination of a vehicle's rear
registration plate (L) approved in the Netherlands (E 4) pursuant to Regulation No. 4 under approval
number 2439. The approval number indicates that the approval was granted in accordance with the
requirements of Regulation No. 4 in its original form or as amended by the respective supplements to the
Regulation in its original form, as the case may be.

Note:
The three examples of approval marks, Models B, C and D represent three possible variants of
the marking of a lighting device when two or more lamps are part of the same unit of grouped,
combined or reciprocally incorporated lamps. This approval mark shows that the device was
approved in the Netherlands (E 4) under approval number 3333 and comprising:
A retro reflector of Class IA approved in accordance with the 02 series of amendments to
Regulation No. 3;
A rear direction indicator of Category 2a approved in accordance with the 01 series of amendments to
Regulation No. 6;
A red rear position lamp (R) approved in accordance with the 01 series of amendments to
Regulation No. 7;
A rear fog lamp (F) approved in accordance with Regulation No. 38 in its original form;
A reversing lamp (AR) approved in accordance with Regulation No. 23 in its original form;
A stop lamp with two levels of illumination (S2) approved in accordance with the 01 series of
amendments to Regulation No. 7;
A rear registration plate illuminating device (L) approved in accordance with Regulation No. 4 in its
original form.
Model E
MD E3 17325
Figure 3
Light Source Modules
The light source module bearing the identification code shown above has been approved together with a
lamp approved in Italy (E3) under approval number 17325.

9. Concise description: ..........................................................................................................................
Device for illuminating:
Category 1a, 1b, 1c, 2a, 2b
Number and category(ies) of filament lamp(s): ...................................................................................
Light source module: .............................................................................................................. yes/no
Light source module specific identification code: .................................................................................
Geometrical conditions of installation (position(s) and inclination(s) of the device in relation to the
space to be occupied by the registration plate and/or different inclinations of this space): ................
10. Position of the approval mark: ..............................................................................................................
11. Reason(s) for extension (if applicable): ................................................................................................
12. Approval granted/extended/refused/withdrawn: ................................................................................
13. Place: ....................................................................................................................................................
14. Date: .....................................................................................................................................................
15. Signature: ............................................................................................................................................
16. The list of documents deposited with the Type Approval Authority which has granted approval is
annexed to this communication and may be obtained on request.

Category 2a (330 × 165mm)
i = 32.5mm
j = 100mm
k = 50mm
l = 100mm
m = 40mm
Category 2b (440 × 220mm)
n = 50mm
o = 120mm
p = 50mm
q = 145mm
r = 50mm
Note:
In the case of devices for illuminating two or all of the plates, the measurement points used are
obtained by combining the corresponding drawings above in accordance with the outline
indicated by the make or manufacturer; however, if two measurement points are less than
30mm apart, only one shall be used.

ANNEX 5
PHOTOMETRIC MEASUREMENT OF LAMPS EQUIPPED WITH SEVERAL LIGHT SOURCES
1. The photometric performance shall be checked:
1.1. For non-replaceable light sources (filament lamps and other):
With the light sources present in the lamp, in accordance with Paragraph 5.2.1. of this
Regulation.
1.2. For Replaceable Light Sources:
When equipped with light sources at 6.75V, 13.5V or 28.0V, the luminance values produced
shall be corrected. For filament lamps the correction factor is the ratio between the reference
luminous flux and the mean value of the luminous flux found at the voltage applied (6.75V,
13.5V or 28.0V).
For LED light sources the correction factor is the ratio between the objective luminous flux and
the mean value of the luminous flux found at the voltage applied (6.75V, 13.5V or 28.0V).
The actual luminous fluxes of each light source used shall not deviate more than ±5% from the
mean value. Alternatively and in the case of filament lamps only a standard filament lamp may
be used in turn, in each of the individual positions, operated at its reference flux, the individual
measurements in each position being added together.

2.2.3. The application of Paragraphs 2.2.1. and 2.2.2. requires regular calibration of test apparatus
and its correlation with measurements made by a Type Approval Authority.
2.2.4. In all cases the reference methods shall be those of this Regulation, particularly for the purpose
of administrative verification and sampling.
2.3. Nature of Sampling
Samples of devices shall be selected at random from the production of a uniform batch. A
uniform batch means a set of devices 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 device shall be subjected to photometric measurements provided for in the
Regulation.
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 Type Approval Authority, criteria governing the acceptability of
his products in order to meet the specifications laid down for verification of conformity of
products in Paragraph 10.1. 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 7 (first sampling) would
be 0.95.

2.1.1.2. Sample B
B1: both devices 0%
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 devices shall be contested and the manufacturer requested to make his
production meet the requirements (alignment) if the deviations of the measured values of the
devices are:
2.2.1.1. Sample A
A3:
one device not more than
20%
one device more than
20%
but not more than
30%
2.2.1.2. Sample B
B2:
in the case of A2
one device more than
0%
but not more than
20%
one device not more than
20%
B3:
in the case of A2
one device
0%
one device more than
20%
but not more than
30%
2.3. Approval Withdrawn
Conformity shall be contested and Paragraph 11 of this Regulation applied if, following the
sampling procedure in Figure 1 of this Annex, the deviations of the measured values of the
devices are:
2.3.1. Sample A
A4:
one device not more than
20%
one device more than
30%
A5: both devices more than 20%
2.3.2. Sample B
B4:
in the case of A2
one device more than
0%
but not more than
20%
one device more than
20%
B5: in the case of A2
both devices more than 20%
B6: in the case of A2
one device 0%

3.3.2. Sample D
D3:
in the case of C2
one device 0 or more than
0%
one device more than
20%

Rear Registration Plate Lamps (not Motorcycles).