Regulation No. 38-00

Name:Regulation No. 38-00
Description:Rear Fog Lamps.
Official Title:Uniform Provisions Concerning the Approval of: Rear Fog Lamps for Power-driven Vehicles and their Trailers.
Country:ECE - United Nations
Date of Issue:1978-07-07
Amendment Level:00 Series, Supplement 19
Number of Pages:24
Vehicle Types:Agricultural Tractor, Bus, Car, Component, Heavy Truck, Light Truck, Motorcycle, Trailer
Subject Categories:Lighting and Light Signalling Equipment
Available on InterRegs.NET

Our online subscription service, offering immediate access to our extensive library of global vehicle regulations, standards and legislation. A fully searchable, accurate, user-friendly resource for consolidated regulations that are updated quickly and frequently.

Tell me more | Already a subscriber

Available on SelectRegs.com

Our fast and easy means of purchasing up-to-date global vehicle and component standards and regulations on a pay-as-you-go basis. Pay securely by credit card and your documents are delivered directly and immediately to your computer as PDF files.

Tell me more | Go straight to site

Keywords:

approval, regulation, lamp, light, lamps, source, intensity, type, rear, amendments, force, luminous, series, requirements, fog, supplement, date, case, filament, entry, control, mark, annex, variable, paragraph, approved, number, manufacturer, conformity, version, original, device, granted, production, module, category, non-replaceable, voltage, accordance, equipped, test, minimum, photometric, reference, sources, tests, marking, time, measurements, application

Text Extract:

All InterRegs documents are formatted as PDF files and contain the full text, tables, diagrams and illustrations of the original as issued by the national government authority. We do not re-word, summarise, cut or interpret the regulatory documents. They are consolidated, published in English, and updated on a regular basis. The following text extract indicates the scope of the document, but does not represent the actual PDF content.

E/ECE/324
) Rev.1/Add.37/Rev.3/Amend.3
E/ECE/TRANS/505 )
April 26, 2018
STATUS OF UNITED NATIONS REGULATION
ECE 38-00
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
REAR FOG LAMPS FOR POWER-DRIVEN VEHICLES AND THEIR TRAILERS
Incorporating:
Supplement 5 to the 00 series of amendments
Date of Entry into Force: 03.09.97
Supplement 6 to the 00 series of amendments
Date of Entry into Force: 28.12.00
Supplement 7 to the 00 series of amendments
Date of Entry into Force: 20.08.02
Supplement 8 to the 00 series of amendments
Date of Entry into Force: 16.07.03
Supplement 9 to the 00 series of amendments
Date of Entry into Force: 26.02.04
Corr. 1 to Supplement 9 to the 00 series of amendments
Dated: 26.02.04
Supplement 10 to the 00 series of amendments
Date of Entry into Force: 09.11.05
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: 11.06.07
Corr. 1 of 30.04.09 to Supplement 12 to the 00 series of amendments Date of Entry into Force: 10.03.09
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
Supplement 17 to the 00 series of amendments
Date of Entry into Force: 08.10.15
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. 38
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF REAR
FOG LAMPS FOR POWER-DRIVEN VEHICLES AND THEIR TRAILERS
CONTENTS
REGULATION
Scope
1.
Definitions
2.
Application for Approval
3.
Markings
4.
Approval
5.
General Specifications
6.
Intensity of Light Emitted
7.
Test Procedure
8.
Heat Resistance Test
9.
Colour of Light Emitted
10.
Conformity of Production
11.
Penalties for Non-conformity of Production
12.
Production Definitely Discontinued
13.
Names and Addresses of Technical Services Responsible for Conducting Approval Tests, and of
Type Approval Authorities
ANNEXES
Annex 1
Annex 2
Annex 3
Annex 4
Annex 5
– Communication
– Arrangements of Approval Marks
– Photometric Measurements
– Minimum Requirements for Conformity of Production Control Procedures
– Minimum Requirements for Sampling by an Inspector

2. APPLICATION FOR APPROVAL
2.1 The application for approval shall be submitted by the holder of the trade name or mark or by
his duly accredited representative. It shall specify, whether the device produces steady
luminous intensity or whether the device produces variable luminous intensity.
At the choice of the applicant, it will specify that the device may be installed on the vehicle
with different inclinations of the reference axis in respect to the vehicle reference planes and
to the ground or rotate around its reference axis; these different conditions of installation shall
be indicated in the communication form.
2.2 For each type of rear fog lamp, the application shall be accompanied by:
2.2.1 Drawings (three copies) in sufficient detail to permit identification of the type of the rear fog
lamp and showing geometrically the position(s) in which the rear fog lamp may be fitted to the
vehicle; the axis of observation to be taken as the axis of reference in the tests (horizontal
angle H = 0°; vertical angle V = 0°); and the point to be taken as the centre of reference in the
said tests;
2.2.2 A brief technical description stating, in particular, with the exception of lamps with
non-replaceable light sources:
(a)
(b)
(c)
(d)
The category or categories of filament lamp(s) prescribed; this filament lamp category
shall be one of those contained in Regulation No. 37 and its series of amendments in
force at the time of application for type approval; and/or
The category or categories of LED light source(s) prescribed; this LED light source
category shall be one of those contained in Regulation No. 128 and its series of
amendments in force at the time of application for type approval; and/or
The light source module specific identification code.
For a rear fog lamp of Category F2, a concise description of the variable intensity
control.
2.2.3 Two samples; if the rear fog lamp cannot be mounted indiscriminately on either side of the
vehicle, the two samples submitted may be identical and be suitable for mounting only on the
right or only on the left side of the vehicle. For a rear fog lamp of category F2, the application
shall also be accompanied by the variable intensity control or a generator providing the same
signal(s).
2.2.4. In the case of a type of lamp differing only by the trade name or mark from a type that has
already been approved it shall be sufficient to submit:
2.2.4.1. A declaration by the lamp manufacturer that the type submitted is identical (except in the
trade name or mark) with and has been produced by the same manufacturer as, the type
already approved, the latter being identified by its approval code;
2.2.4.2. Two samples bearing the new trade name or mark or equivalent documentation.
2.2.5. In the case of a non-replaceable filament lamp(s) or light source module(s) equipped with
non-replaceable filament lamp(s): the documents according to Paragraph 5.6. of this
Regulation.

4.3 Every rear fog lamp conforming to a type approved under this Regulation shall bear in the
space referred to in Paragraph 3.3. above, in addition to the mark and the particulars
prescribed in Paragraphs 3.1 and 3.2. above:
4.3.1 An international approval mark consisting of;
4.3.1.1 A circle surrounding the Letter "E" followed by the distinguishing number of the country which
has granted approval;
4.3.1.2 An approval number;
4.3.2 The additional Symbol "F" followed by the Figure "1" when the device produces steady
luminous intensity and by the Figure "2" when the device produces variable luminous
intensity.
4.3.3 The first two digits of the approval number which indicate the most recent series of
amendments to this Regulation may be placed in the vicinity of the additional Symbol "F".
4.4 The mark and the symbol referred to in Paragraphs 4.3.1. and 4.3.2. shall be indelible and
shall be clearly legible even when the rear fog lamp is fitted to the vehicle.
4.5 Independent Lamps
If different types of lamps complying with the requirements of several Regulations, uses the
same outer lens having the same or different colour, a single international approval mark may
be affixed, consisting of a circle surrounding the letter "E" followed by the distinguishing
number of the country which has granted the approval, and an approval number. This
approval mark may be located anywhere on the lamp, provided that:
4.5.1 It is visible after their installation.
4.5.2 The identification symbol for each lamp appropriate to each Regulation under which approval
has been granted, together with the corresponding series of amendments incorporating the
most recent major technical amendments to the Regulation at the time of issue of the
approval and if necessary, the required arrow shall be marked.
4.5.3 The size of the components of a single approval mark shall not be less than the minimum size
required for the smallest of the individual marks under which approval has been granted.
4.5.4 The main body of the lamp shall include the space described in Paragraph 3.3 above and
shall bear the approval mark of the actual function(s).
4.5.5 Model E in Annex 2 to this Regulation gives examples of an approval mark with the
above-mentioned additional symbols.

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 Regulations Nos. 48, 53
or 86, and their series of amendments in force at the time of application for the lamp type
approval shall apply to this Regulation.
The requirements pertinent to each lamp and to the category/ies of vehicle on which the lamp
is intended to be installed shall be applied, where its verification at the moment of lamp type
approval is feasible.
5.1 Each sample shall conform to the specifications set forth in the Paragraphs below.
5.2 Rear fog lamps shall be so designed and constructed that in normal use, despite the vibration
to which they may then be subjected, they continue to function satisfactorily and retain the
characteristics prescribed by this Regulation.
5.3. In the case of light source modules, it shall be checked that:
5.3.1. 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 can not be interchanged within the
same lamp housing.
5.3.2. The light source module(s) shall be tamperproof.
5.3.3. 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.
5.4. In the case of failure of the variable intensity control regulating the variable luminous intensity
of a rear fog lamp of Category F2 emitting more than the maximum value of Category F or F1,
requirements of steady luminous intensity of Category F or F1 shall be fulfilled automatically.
5.5. In the case of replaceable filament lamp(s):
5.5.1. The rear fog lamp shall only be equipped with light source(s) approved according to
UN Regulation No. 37 and/or UN Regulation No. 128, provided that no restriction on the use
is made in UN Regulation No. 37 and its series of amendments in force at the time of
application for type approval or in UN Regulation No. 128 and its series of amendments in
force at the time of application for type approval.
5.5.2. The design of the device shall be such that the filament lamp can be fixed in no other position
but the correct one.
5.5.3. The light source holder shall conform to the characteristics given in IEC Publication 60061.
The holder data sheet relevant to the category of light source used, applies.

6.7. The apparent surface in the direction of the reference axis shall not exceed 140cm .
6.8. Annex 3 gives particulars of the measurement method to be used in case of doubt.
7. TEST PROCEDURES
7.1. All measurements, photometric and colorimetric, shall be made:
7.1.1. In the case of a lamp with replaceable light source, if not supplied by an electronic light
source control gear or a variable intensity control, with an uncoloured or coloured standard
filament lamp of the category prescribed for the device, 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 sources 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 mean value of the luminous flux found at the voltage applied.
7.1.2. In the case of a lamp equipped with non-replaceable light sources (filament lamps and other),
at 6.75V, 13.5V or 28.0V respectively.
7.1.3. In the case of a system that uses an electronic light source control gear or a variable intensity
control, being part of the lamp applying at the input terminals of the lamp the voltage
declared by the manufacturer or, if not indicated, 6.75V, 13.5V or 28.0V respectively.
7.1.4. In the case of a system that uses an electronic light source control gear or a variable intensity
control, not being part of the lamp the voltage declared by the manufacturer shall be applied
to the input terminals of the lamp.
7.2. The test laboratory shall require from the manufacturer the light source control gear or a
variable intensity control needed to supply the light source and the applicable functions.
7.3. However in the case of a rear fog lamp of Category F2 operated by a variable intensity control
to obtain variable luminous intensity, photometric measurements shall be performed
according to the applicant's description.
7.4. The voltage to be applied to the lamp shall be noted in the communication for in Annex 1 of
this Regulation.
7.5. For any lamp except those equipped with filament lamps, the luminous intensities, measured
after one minute and after 30min of operation, shall comply with the minimum and maximum
requirements. The luminous intensity distribution after one minute of operation can be
calculated from the luminous intensity distribution after 30min of operation by applying at each
test point the ratio of luminous intensities measured at HV after one minute and after 30min of
operation.
7.6. The limits of the apparent surface in the direction of the reference axis of a light-signalling
device shall be determined.

10.2. The type approval 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.
10.3. In the case of non-replaceable filament lamp(s) or light source module(s) equipped with
non-replaceable filament lamps, a report (by the light source manufacturer indicated in the
type approval documentation) shall demonstrate compliance of these non-replaceable
filament lamp(s) with lifetime requirements and, in the case of colour coated filament lamps,
also with colour endurance requirements, as specified in Paragraph 4.11. of IEC 60809,
Edition 3.
11. PENALTIES FOR NON-CONFORMITY OF PRODUCTION
11.1. The approval granted for a type of rear fog lamp may be withdrawn if the foregoing
requirements are not complied with or if a rear fog lamp bearing the mark referred to in
Paragraphs 4.3.1. and 4.3.2. does not conform to the type approved.
11.2. If a Contracting Party to the Agreement which applies this Regulation withdraws an approval it
has previously granted, it shall forthwith notify the other Contracting Parties which apply this
Regulation by means of a communication form conforming to the model in Annex 1 to this
Regulation.
12. PRODUCTION DEFINITELY DISCONTINUED
If the holder of the approval completely ceases to manufacture a type of rear fog lamp
approved under this Regulation, he shall inform thereof the Type Approval 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 1 to this Regulation.
13. NAMES AND ADDRESSES OF TECHNICAL SERVICES CONDUCTING APPROVAL
TESTS, AND OF TYPE APPROVAL AUTHORITIES
The Contracting 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 the forms certifying approval or refusal or withdrawal of approval, issued in other
countries, are to be sent.

Light source module specific identification code: ..................................................................................
Geometrical conditions of installation and relating variations; if any: ....................................................
Application of an electronic light source control gear/variable intensity control:
(a) Being part of the lamp: yes/no
(b) Being not part of the lamp: yes/no
Input voltage(s) supplied by an electronic light source control gear/variable intensity control: .............
Electronic light source control/variable intensity control manufacturer and identification number
(when the light source control gear is part of the lamp but is not included into the lamp body): ...........
Variable luminous intensity: yes/no
The lamp is only for use on a vehicle fitted with a tell-tale indicating failure: yes/no
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.

(The vertical and horizontal lines schematise the shape of the light-signalling device.
These are not part of the approval mark.)
Model B
Model C
Model D
Figure 2
Simplified Marking for Grouped, Combined or Reciprocally Incorporated Lamps
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 (E4) under approval number 3333 and comprising:

ANNEX 3
PHOTOMETRIC MEASUREMENTS
1. When photometric measurements are taken, stray reflections shall be avoided by appropriate
masking.
2. In the event that the results of measurements are challenged, measurements shall be taken in
such a way as to meet the following requirements:
2.1 The distance of measurement shall be such that the law of the inverse of the square of the
distance is applicable;
2.2 The measuring equipment shall be such that the angle subtended by the receiver from the
reference centre of the light is between 10' and 1°;
2.3 The intensity requirement for a particular direction of observation shall be satisfied if the required
intensity is obtained in a direction deviating by not more than one-quarter of a degree from the
direction of observation.
3. In the case where the device may be installed on the vehicle in more than one or in a field of
different positions the photometric measurements shall be repeated for each position or for the
extreme positions of the field of the reference axis specified by the manufacturer.
4. If visual examination of a light appears to reveal substantial local variations of intensity, a check
shall be made to ensure that, outside the axes, no intensity measured within the rhombus defined
by the extreme directions of measurement is below 75cd (see diagram below).
5. PHOTOMETRIC MEASUREMENT OF LAMPS EQUIPPED WITH SEVERAL LIGHT SOURCES
The photometric performance shall be checked:
5.1 For Non-replaceable Light Sources (Filament Lamps and Other):
With the light sources present in the lamp, in accordance with Paragraph 7.1. of this Regulation.

ANNEX 4
MINIMUM REQUIREMENTS FOR CONFORMITY OF PRODUCTION CONTROL PROCEDURES
1. GENERAL
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 lamps shall not
be contested if, when testing according to Paragraph 7. of this Regulation, the photometric
performances as set forth in Paragraph 6. of this Regulation of any lamp chosen at random
and equipped with a standard light source, or when the lamps 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. In the case of a direction indicator equipped with a replaceable light source, if results of the
test described above do not meet the requirements, tests shall be repeated using another
standard filament lamp.
1.3. With respect to colorimetric performance, the requirements set out in Paragraph 9. of this
Regulation shall be complied with.
1.4. 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:
1.4.1. 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;
1.4.2. 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. MINIMUM REQUIREMENTS FOR VERIFICATION OF CONFORMITY BY THE
MANUFACTURER
For each type of lamp the holder of the approval mark shall carry out at least the following
tests, at appropriate intervals. The tests shall be carried out in accordance with the
provisions of this Regulation.
If any sampling shows non-conformity with regard to the type of test concerned, further
samples shall be taken and tested. The manufacturer shall take steps to ensure the
conformity of the production concerned.

ANNEX 5
MINIMUM REQUIREMENTS FOR SAMPLING BY AN INSPECTOR
1. GENERAL
1.1 The conformity requirements shall be considered satisfied from a mechanical and a
geometric standpoint, in accordance with the requirements of this Regulation, if any, if the
differences do not exceed inevitable manufacturing deviations.
1.2 With respect to photometric performances, the conformity of mass-produced lamps shall not
be contested if, when testing according to Paragraph 7. of this Regulation, the photometric
performances as set forth in Paragraph 6. to this Regulation of any lamp chosen at random
and equipped with a standard light source, or when the lamps 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 According to the requirements in Paragraph 1.2.1. of Annex 4 to this Regulation are met.
1.2.2 In the case of a lamp equipped with a replaceable light source, if results of the test
described above do not meet the requirements, tests on lamps shall be repeated using
another standard light source.
1.2.3 Lamps with apparent defects are disregarded.
1.3 The chromaticity co-ordinates shall be complied with when tested under the conditions of
Paragraph 7. of this Regulation.
2. FIRST SAMPLING
In the first sampling four rear fog lamps are selected at random. The first sample of two is
marked A, the second sample of two is marked B.
2.1 The conformity of mass-produced rear fog lamps shall not be contested if the deviation of
any specimen of samples A and B (all four lamps) is not more than 20%.
In the case, that the deviation of both lamps of sample A is not more than 0%, the
measurement can be closed.
2.2 The conformity of mass-produced rear fog lamps shall be contested if the deviation of at
least one specimen of sample A or B is more than 20%.
The manufacturer shall be requested to bring his production in line with the requirements
(alignment) and a repeated sampling according to Paragraph 3. below shall be carried out
within two months' time after the notification. The samples A and B shall be retained by the
Technical Service until the entire Conformity of Production process is finished.

Rear Fog Lamps.