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 19
Number of Pages:27
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, type, source, supplement, force, amendments, devices, lamp, series, lamps, plate, date, entry, requirements, registration, filament, annex, illuminating, case, paragraph, category, mark, rear, manufacturer, approved, conformity, module, non-replaceable, original, production, surface, equipped, granted, number, vehicle, sources, accordance, minimum, tests, grouped, time, version, application, photometric, marking, contracting, illuminated

Text Extract:

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E/ECE/324
) Add.3/Rev.3/Amend.3
E/ECE/TRANS/505 )
March 26, 2018
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
Supplement 18 to the 00 series of amendments
Date of Entry into Force: 10.10.17
Supplement 19 to the 00 series of amendments
Date of Entry into Force: 10.02.18

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)
The trade name or mark:
(i)
(ii)
Lamps bearing the same trade name or mark but produced by different
manufacturers shall be considered as being of different types;
Lamps produced by the same manufacturer differing only by the trade name or
mark shall be considered as being of the same type.
(b)
The characteristics of the optical system, (levels of intensity, light distribution angles,
category of filament lamp, light source module, etc.);

3. MARKINGS
Illuminating devices submitted for approval must bear:
3.1. The trade name or mark of the maker or manufacturer of the illuminating device;
3.2. A space of sufficient size for the approval mark; this space shall be shown in the drawings
mentioned in Paragraph 2 a) above;
3.3. In the case of lamps with non-replaceable light sources or light source module(s), the marking
of the rated voltage or range of voltage;
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 or range of voltage.
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.

4.6.5. The approval marking shall be clearly legible and indelible. It may be placed on an inner or
outer part (transparent or not) of the device which cannot be separated from the transparent
part of the device emitting the light. In any case the marking shall be visible when the device is
fitted on the vehicle or when a movable part such as the hood or boot lid or a door is opened.
4.7. Annex 1 gives examples of arrangements of approval marks for a single lamp (Figure 1) and
for grouped, combined or reciprocally incorporated lamps (Figure 2) with all the additional
symbols referred to above.
5. GENERAL SPECIFICATIONS
The requirements contained in Sections 5. "General Specifications" and 6. "Individual
Specifications" and in the Annexes referenced in the said sections of UN Regulations Nos. 48,
53, 74 or 86, and their series of amendments in force at the time of application for the device
type approval shall apply to this Regulation.
The requirements pertinent to each device and to the category/ies of vehicle on which the
device is intended to be installed shall be applied, where its verification at the moment of
device type approval is feasible.
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.

7. INCIDENCE OF THE LIGHT
The manufacturer of the illuminating device shall specify one or more or a field of positions in
which the device is to be fitted in relation to the space for the registration plate; when the lamp
is placed in the position(s) specified by the manufacturer the angle of incidence of the light on
the surface of the plate does not exceed 82° at any point on the surface to be illuminated, this
angle being measured from the extremity of the device's illuminating area which is furthest from
the surface of the plate. If there is more than one illuminating device, the foregoing requirement
shall apply only to that part of the plate intended to be illuminated by the device concerned.
When the device has one outer edge of the illuminating surface that is parallel to the surface of
the registration plate, the extremity of the illuminating surface of the device which is furthest
from the surface of the plate is the middle point of the edge of the illuminating surface, which is
parallel to the plate and is furthest from the surface of the plate.
The device must be so designed that no light is emitted directly towards the rear, with the
exception of red light if the device is combined or grouped with a rear lamp.
8. MEASURING PROCEDURE
Luminance measurements shall be made on a diffuse colourless surface with known diffuse
reflection factor . The diffuse colourless surface shall have the dimensions of the registration
plate or the dimension exceeding one measuring point. Its centre shall be placed in the centre
of the positions of the measuring points.
This diffuse colourless surface(s) shall be placed in the position normally occupied by the
registration plate and 2mm in front of its holder.
Luminance measurements shall be made perpendicularly to the surface of the diffuse
colourless surface with the tolerance of 5° in each direction at the points shown in Annex 3 to
this Regulation, each point representing a circular area 25mm in diameter. The measured
luminance shall be corrected for the diffuse reflection factor 1.0.
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:
B − B
≤ 2 × Bo / cm
dis tance 1 − 2 in cm

13. TRANSITIONAL PROVISIONS
13.1. Rear registration plate illuminating devices not equipped with filament lamps.
13.1.1. As from the date of entry into force of Supplement 8, no Contracting Party applying this
Regulation shall refuse to grant approvals under this Regulation as amended by Supplement 8.
13.1.2. As from 36 months after the date of entry into force of Supplement 8, Contracting Parties
applying this Regulation shall grant approvals only if the type of devices as described in
Paragraph 13.1. above meets the requirements of this Regulation as amended by
Supplement 8.
13.1.3. Contracting Parties applying this Regulation shall not refuse to grant extensions of approvals to
the preceding series of amendments to this Regulation.
13.1.4. Contracting Parties applying this Regulation shall continue to grant approvals to those types of
devices as described in Paragraph 13.1. above which comply with the requirements of this
Regulation as amended by the preceding series of amendments during the 36 months' period
which follows the date of entry into force of Supplement 8.
13.2. Fitting of rear registration plate illuminating devices described in Paragraph 13.1. above on a
vehicle.
13.2.1. As from the date of entry into force of Supplement 8, no Contracting Party applying this
Regulation shall prohibit the fitting on a vehicle of devices described in Paragraph 13.1. above
approved under this Regulation as amended by Supplement 8.
13.2.2. Contracting Parties applying this Regulation shall continue to allow the fitting on a vehicle of
devices described in Paragraph 13.1. above approved to this Regulation as amended by the
preceding series of amendments during the 48 months' period which follows the date of entry
into force of Supplement 8.
13.2.3. Upon the expiration of a period of 48 months after the date of entry into force of Supplement 8,
Contracting Parties applying this Regulation may prohibit the fitting of devices described in
Paragraph 13.1. above which do not meet the requirements of this Regulation as amended by
Supplement 8 on a new vehicle for which type approval or individual approval was granted
more the 24 months after the entry into force of Supplement 8 to this Regulation.
13.2.4. Upon expiration of a period of 60 months after the date of entry into force of Supplement 8,
Contracting Parties applying this Regulation may prohibit the fitting of devices as described in
Paragraph 13.1. above which do not meet the requirements of this Regulation as amended by
Supplement 8 on a new vehicle first registered more than 60 months after the date of entry into
force of Supplement 8 to this Regulation.
14. NAMES AND ADDRESSES OF TECHNICAL SERVICES CONDUCTING APPROVAL TESTS
AND OF TYPE APPROVAL AUTHORITIES
The parties to the Agreement which apply this Regulation shall communicate to the Secretariat
of the United Nations the names and addresses of the Technical Services conducting approval
tests and of the Type Approval Authorities which grant approval and to which forms certifying
approval or refusal or withdrawal or approval, issued in other countries, are to be sent.

Model B
Model C
Model D
Figure 2
Simplified Marking For Grouped, Combined or Reciprocally
Incorporated Lamps
(The vertical and horizontal lines schematize the shape of the
light-signalling device. These are not part of the approval mark).

ANNEX 2
COMMUNICATION
(Maximum format: A4 (210 × 297mm))
issued by: Name of administration:
.........................................................
.........................................................
.........................................................
concerning
APPROVAL GRANTED
APPROVAL EXTENDED
APPROVAL REFUSED
APPROVAL WITHDRAWN
PRODUCTION DEFINITIVELY DISCONTINUED
of a type of device for the illumination of rear registration plates of motor vehicles (except motor cycles)
and their trailers pursuant to Regulation No. 4.
Approval No. ................................... Extension No. ...........................................
1. Trade name or mark of the device: ......................................................................................................
2. Manufacturer's name for the type of device: ........................................................................................
3. Manufacturer's name and address: ......................................................................................................
4. If applicable, name and address of manufacturer's representative: ....................................................
..............................................................................................................................................................
5. Submitted for approval on: ...................................................................................................................
6. Technical Service responsible for conducting approval tests: .............................................................
..............................................................................................................................................................
7. Date of report issued by that Service: ..................................................................................................
8. Number of report issued by that Service: .............................................................................................

Category 1a (340 × 240mm)
ANNEX 3
MEASUREMENT POINTS FOR TEST PURPOSES
Category 1b (520 × 120mm)
Category 1c (255 × 165mm)
a = 25mm
b = 95mm
c = 100mm
d = 90mm
e = 70mm
f = 57.5mm
g = 70mm
h = 65mm

ANNEX 4
MINIMUM FIELD OF VISIBILITY OF THE SURFACE TO BE ILLUMINATED
1. The field-of-visibility angles shown above relate only to the relative positions of the illuminating
device and the space for the registration plate.
2. The field of visibility of the registration plate when mounted on the vehicle remains subject to the
relevant national regulations.
3. The angles shown take account of the partial occultation caused by the illuminating device. They
must be adhered to in the directions in which there is most occultation. The illuminating devices
must be such as to reduce the areas partly occulted to the minimum strictly necessary.

1. GENERAL
ANNEX 6
MINIMUM REQUIREMENTS FOR CONFORMITY OF PRODUCTION
CONTROL PROCEDURES
1.1. The conformity requirements shall be considered satisfied from a mechanical and geometric
standpoint, if the differences do not exceed inevitable manufacturing deviations within the
requirements of this Regulation.
1.2. With respect to photometric performances, the conformity of mass-produced devices shall not
be contested if, when testing according to Paragraph 8. of this Regulation, the photometric
performances as set forth in Paragraph 9. of this Regulation of any device chosen at random
and equipped with a standard light source, or when the devices are equipped with
non-replaceable light sources (filament lamps or other), and when all measurements are made
at 6.75V, 13.5V or 28.0V respectively:
1.2.1. No measured value deviates unfavourably by more than 20% from the values prescribed in this
Regulation.
1.2.2. With respect to the gradient of luminance the unfavourable deviation may be:
2.5 × Bo/cm
comparable to
20%
3.0 × Bo/cm
comparable to
30%
1.2.3. If, in the case of a device equipped with a replaceable light source and if results of the test
described above do not meet the requirements, tests on devices shall be repeated using
another standard light source.
1.2.4. In the case of non-replaceable filament lamp(s) or light source module(s) equipped with
non-replaceable filament lamps, at any conformity of production check:
1.2.4.1. The holder of the approval mark shall demonstrate the use in normal production and show the
identification of the non-replaceable filament lamp(s) as indicated in the type approval
documentation;
1.2.4.2. In the case where doubt exists in respect to compliance of the non-replaceable filament lamp(s)
with lifetime requirements and/or, in the case of colour coated filament lamps, with colour
endurance requirements, as specified in Paragraph 4.11. of IEC 60809, Edition 3, conformity
shall be checked (by the light source manufacturer indicated in the type approval
documentation) as specified in Paragraph 4.11. of IEC 60809, Edition 3.

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.

3. FIRST REPEATED SAMPLE
A sample of four devices is selected at random from stock manufactured after alignment.
The first sample of two is marked C, the second sample of two is marked D.
3.1. The conformity of mass-produced devices shall not be contested if the deviation of any
specimen of samples C and D (all four devices) is not more than 20%.
In the case, that the deviation of both devices of sample C is not more than 0%, the
measurement can be closed.
3.2. The conformity of mass-produced devices shall be contested if the deviation of at least
3.2.1. One specimen of sample C and D is more than 20% but the deviation of all specimen of
these samples is not more than 30%.
The manufacturer shall be requested again to bring his production in line with the
requirements (alignment).
A second repeated sampling according to Paragraph 4. below shall be carried out within two
months' time after the notification. The samples C and D shall be retained by the Technical
Service until the entire CoP process is finished.
3.2.2. One specimen of sample C or D is more than 30%.
In this case the approval shall be withdrawn and Paragraph 5. below shall be applied.
4. SECOND REPEATED SAMPLE
A sample of four devices is selected at random from stock manufactured after alignment.
The first sample of two is marked E, the second sample of two is marked F.
4.1. The conformity of mass-produced devices shall not be contested if the deviation of any
specimen of samples E and F (all four devices) is not more than 20%.
In the case, that the deviation of both devices of sample E is not more than 0%, the
measurement can be closed.
4.2. The conformity of mass-produced devices shall be contested if the deviation of at least one
specimen of sample E or F is more than 20%.
In this case the approval shall be withdrawn and Paragraph 5. below shall be applied.
5. APPROVAL WITHDRAWN
Approval shall be withdrawn according to Paragraph 11. of this Regulation.
Rear Registration Plate Lamps (not Motorcycles).