Regulation No. 34-03

Name:Regulation No. 34-03
Description:Fire Risk Prevention.
Official Title:Uniform Provisions Concerning the Approval of: Vehicles with Regard to the Prevention of Fire Risks.
Country:ECE - United Nations
Date of Issue:2015-06-22
Amendment Level:03 Series, Supplement 1
Number of Pages:38
Vehicle Types:Bus, Car, Component, Heavy Truck, Light Truck, Trailer
Subject Categories:Occupant Protection
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Keywords:

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Text Extract:

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E/ECE/324
) Rev.1/Add.33/Rev.2/Amend.3
E/ECE/TRANS/505 )
October 28, 2016
STATUS OF UNITED NATIONS REGULATION
ECE 34-03
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
VEHICLES WITH REGARD TO THE PREVENTION OF FIRE RISKS
Incorporating:
00 series of amendments
Date of Entry into Force: 01.07.75
01 series of amendments
Date of Entry into Force: 18.01.79
02 series of amendments
Date of Entry into Force: 16.07.03
Supplement 1 to the 02 series of amendments
Date of Entry into Force: 12.08.04
Supplement 2 to the 02 series of amendments
Date of Entry into Force: 11.06.07
Supplement 3 to the 02 series of amendments
Date of Entry into Force: 24.10.09
Supplement 4 to the 02 series of amendments
Date of Entry into Force: 26.07.12
Supplement 5 to the 02 series of amendments
Date of Entry into Force: 18.11.12
Corr.1 to Revision 2 of the Regulation
Dated: 11.09.13
03 series of amendments
Date of Entry into Force: 15.06.15
Corr.1 to Revision 2 of the Regulation
Dated: 30.06.15
Supplement 1 to the 03 series of amendments
Date of Entry into Force: 08.10.16

REGULATION NO. 34-03
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF VEHICLES
WITH REGARD TO THE PREVENTION OF FIRE RISKS
CONTENTS
REGULATION
1. Scope
2. Application for Approval
3. Approval
4. Definitions
PART I
APPROVAL OF VEHICLES WITH REGARDS TO THEIR FUEL TANKS
5. Requirements for liquid fuel tanks
6. Test of liquid fuel tanks
7. Definitions
PART II-1
APPROVAL OF VEHICLES WITH REGARD TO THE PREVENTION OF
FIRE RISKS IN THE EVENT OF COLLISION
8. Requirements for the installation of liquid fuel tanks
9. Tests on the vehicle
PART II-2
APPROVAL OF VEHICLE WITH REGARD TO THE PREVENTION OF
FIRE RISKS IN THE EVENT OF REAR COLLISION
9.6. Definitions and Test Requirements
10. Definitions
PART III
APPROVAL OF TANKS FOR LIQUID FUEL AS SEPARATE TECHNICAL UNITS
11. Requirements for liquid fuel tanks

1. SCOPE
REGULATION NO. 34-03
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF VEHICLES
WITH REGARD TO THE PREVENTION OF FIRE RISKS
This Regulation applies:
1.1.
PART I: To the approval of vehicles of Categories M, N and O
with regard to the tank(s)
for liquid fuel.
1.2. PART II-1: At the request of the manufacturer, to the approval of vehicles of Categories M,
N, and O approved to Part I or IV of this Regulation fitted with liquid fuel tank(s) with regard
to the prevention of fire risks in the event of a frontal and/or lateral collision as well as to the
approval of vehicles of Categories M and N , which are of a total permissible mass
exceeding 2.8t, and Categories M , M , N , N and O, fitted with tank(s) for liquid fuel, which
have been approved to Part I or IV of this Regulation with regard to the prevention of fire
risks in the event of a rear collision.
Part II-2: To the approval of vehicles of Categories M and N , which are of a total
permissible mass not exceeding 2.8t, fitted with liquid fuel tank(s) approved to Part I or IV of
this Regulation with regard to the prevention of fire risks in the event of a rear collision.
1.3. PART III: To the approval of tanks for liquid fuel as technical units.
1.4. PART IV: To the approval of vehicles with regard to the installation of approved tanks for
liquid fuel.
2. APPLICATION FOR APPROVAL
2.1. Application for approval pursuant to Part I and/or Part II of this Regulation.
2.1.1. The application for approval of a vehicle type to a Part I or Part II of this Regulation shall be
submitted by the vehicle manufacturer or by his duly accredited representative.
2.1.2. It shall be accompanied by the undermentioned documents in triplicate and by the following
particulars:
2.1.2.1. A detailed description of the vehicle type with respect to the items specified in Paragraph 4.2
and/or 7.2. The numbers and/or symbols identifying the engine type and the vehicle type
shall be specified;
2.1.2.2. Drawing(s) showing the characteristics of the fuel tank and specifying the material from
which it is made;
2.1.2.3. A diagram of the entire fuel feed systems, showing the site of each component on the
vehicle; and
2.1.2.4. For application pursuant to Part II of this Regulation, a diagram of the electrical installation,
showing its siting and its mode of attachment to the vehicle.

2.3.2.1. A detailed description of the vehicle type with respect to the items specified in
Paragraph 12.2. The numbers and/or symbols identifying the engine type and the vehicle
type shall be specified;
2.3.2.2. A diagram of the entire fuel feed system, showing the site of each component on the
vehicle;
2.3.2.3. A list of all types of tanks for liquid fuel approved pursuant to Part III of this Regulation and
intended to be fitted to the type of vehicle.
2.3.3. The following shall be submitted to the Technical Service responsible for conducting the
type-approval tests:
2.3.3.1. A vehicle representative of the type of vehicle to be approved;
2.3.3.2. If necessary, two additional tanks with their accessories in the case of each type of fuel tank
approved without its accessories.
3. APPROVAL
3.1. Approval pursuant to Part I and/or Part II of this Regulation.
3.1.1. If the vehicle submitted for approval pursuant to this Regulation meets the requirements of
Parts I and/or Part II below, approval of that vehicle type shall be granted.
3.1.2. Each type approved shall be assigned an approval number whose first two digits shall
constitute the number of the most recent series of amendments incorporated in the
Regulation on the date of issue of the approval. A Contracting Party may however assign the
same approval number to several vehicle types as defined in Paragraph 4.2 and/or 7.2 if the
types are variants of the same basic model and provided that each type is separately tested
and found to comply with the conditions of this Regulation.
3.1.3. Notice of approval or of refusal of approval of a vehicle type pursuant to this Regulation shall
be communicated to the Parties to the Agreement which apply this Regulation by means of a
form conforming to the model in Annex 1, Appendix 1 to this Regulation and of drawings,
giving the particulars referred to in Paragraphs 2.1.2.2., 2.1.2.3 and 2.1.2.4 above (supplied
by the applicant for approval) in a format not exceeding A4 (210 × 297mm) or folded to that
format and on an appropriate scale.
3.1.4. There shall be affixed, conspicuously and in a readily accessible place specified on the
approval form, to every vehicle conforming to a vehicle type approved under this Regulation,
an international approval mark consisting of:
3.1.4.1. A circle surrounding the Letter "E" followed by the distinguishing number of the country
which has granted approval;
3.1.4.2. The number of this Regulation, followed by "RI", if the vehicle is approved pursuant to Part I
of the Regulation, or by "RII-1" if the vehicle is approved pursuant to Parts I or IV and to
Part II-1 of the Regulation, or by "RII-2" if the vehicle is approved pursuant to Parts I or IV
and to Part II-2 of the Regulation, a dash and the approval number to the right of the circle
prescribed in Paragraph 3.1.4.1.

3.3. Approval pursuant to Part IV of this Regulation
3.3.1. If the vehicle submitted for approval pursuant to this Regulation meets the requirements of
Part IV below, approval of that vehicle type shall be granted.
3.3.2. Each type approved shall be assigned an approval number whose first two digits shall
constitute the number of the most recent series of amendments incorporated in the
Regulation on the date of issue of the approval. A Contracting Party may however assign
the same approval number to several vehicle types as defined in Paragraph 12.2. if the
types are variants of the same basic model and provided that each type is separately tested
and found to comply with the conditions of this Regulation.
3.3.3. Notice of approval or of refusal of approval of a vehicle type pursuant to this Regulation
shall be communicated to the Contracting Parties to the Agreement which apply this
Regulation by means of a form conforming to the model in Annex 1, Appendix 1 to this
Regulation and of drawings, giving the particulars referred to in Paragraphs 2.3.2.1., 2.3.2.2.
and 2.3.2.3. above (supplied by the applicant for approval) in a format not exceeding
A4 (210 × 297mm) or folded to that format and on an appropriate scale.
3.3.4. There shall be affixed, conspicuously and in a readily accessible place specified on the
approval form, to every vehicle conforming to a vehicle type approved under this Regulation,
an international approval mark consisting of:
3.3.4.1. A circle surrounding the Letter "E" followed by the distinguishing number of the country
which has granted approval;
3.3.4.2. The number of this Regulation, followed "RIV", a dash and the approval number to the right
of the circle prescribed in Paragraph 3.3.4.1.
3.3.5. If the vehicle conforms to a vehicle type approved, under one or more other Regulations
annexed to the Agreement, in the country which has granted approval under this
Regulation, the symbol prescribed in Paragraph 3.3.4.1. need not be repeated; in such a
case the additional numbers, approval numbers and symbols of all the Regulations under
which approval has been granted in the country which has granted approval under this
Regulation shall be placed in vertical columns to the right of the symbol prescribed in
Paragraph 3.3.4.1.
3.3.6. The approval mark shall be clearly legible and indelible.
3.3.7. The approval mark shall be placed close to or on the vehicle data plate affixed by the
manufacturer.
3.3.8. Annex 2 to this Regulation gives examples of arrangements of the approval mark.

5.5. The tank(s) shall not be situated in, or from, a surface (floor, wall, bulkhead) of the
passenger compartment or other compartment integral with it.
5.6. A partition shall be provided to separate the occupant compartment from the tank(s). The
partition may contain apertures (e.g. to accommodate cables) provided they are so arranged
that fuel cannot flow freely from the tank(s) into the occupant compartment or other
compartment integral with it during normal conditions of use.
5.7. Every tank shall be securely fixed and so placed as to ensure that any fuel leaking from the
tank or its accessories will escape to the ground and not into the occupant compartment
during normal conditions of use.
5.8. The filler hole shall not be situated in the occupant compartment, in the luggage
compartment or in the engine compartment.
5.9. The fuel shall not escape through the tank cap or through the devices provided to
compensate excess pressure during the foreseeable course of operation of the vehicle. In
the case of overturning of the vehicle, a drip may be tolerated provided that it does not
exceed 30g/min; this requirement shall be verified during the test prescribed in
Paragraph 6.2.
5.9.1. The fuel filler cap shall be fixed to the filler pipe.
5.9.1.1. The requirements of Paragraph 5.9.1 shall be deemed to be satisfied if provision is made to
prevent excess evaporative emissions and fuel spillage caused by a missing fuel filler cap.
This may be achieved using one of the following:
5.9.1.1.1. An automatically opening and closing, non-removable fuel filler cap,
5.9.1.1.2. Design features which avoid excess evaporative emissions and fuel spillage in the case of a
missing fuel filler cap,
5.9.1.1.3. Any other provision which has the same effect. Examples may include, but are not limited
to, a tether filler cap, a chained filler cap or one utilising the same locking key for the filler
cap and for the vehicle's ignition. In this case, the key shall be removable from the filler cap
only in the locked condition. However, the use of tethered or chained filler cap by itself is not
sufficient for vehicles other than those of Categories M and N .
5.9.2. The seal between the cap and the filler pipe shall be retained securely in place. The cap
shall latch securely in place against the seal and filler pipe when closed.
5.10. Tanks shall be installed in such a way as to be protected from the consequences of a
collision to the front or the rear of the vehicle; there shall be no protruding parts, sharp
edges, etc. near the tank.

7. DEFINITIONS
PART II-1
APPROVAL OF VEHICLES WITH REGARD TO THE PREVENTION OF
FIRE RISKS IN THE EVENT OF COLLISION
For the purposes of this Part of the Regulation:
7.1. "Approval of a vehicle" means the approval of a vehicle type with regard to the prevention
of fire risks;
7.2. "Vehicle type" means vehicles which do not differ in such essential respects as:
7.2.1. The structure, shape, dimensions and materials (metal/plastic) of the tank(s);
7.2.2. In vehicles of Category M the position of the tank(s) in the vehicle in so far as it has a
negative effect on the requirements of Paragraph 5.10;
7.2.3. The characteristics and siting of the fuel feed system (pump, filters, etc.); and
7.2.4. The characteristics and siting of the electrical installation in so far as they have an effect on
the results of the collision tests prescribed in this Regulation;
7.3. "Transverse plane" means the vertical transverse plane perpendicular to the median
longitudinal plane of the vehicle;
7.4. "Unladen mass" means the mass of the vehicle in running order, unoccupied and unladen
but complete with fuel, coolant, lubricants, tools and a spare wheel (if provided as standard
equipment by the vehicle manufacturer);
8. REQUIREMENTS FOR THE INSTALLATION OF LIQUID FUEL TANKS
8.1. Fuel Installation
8.1.1. The vehicles shall be approved according to either Part I or Part IV of this Regulation.
8.1.2. The components of the fuel installation shall be adequately protected by parts of the frame
or bodywork against contact with possible obstacles on the ground. Such protection shall
not be required if the components beneath the vehicle are further from the ground than the
part of the frame or bodywork in front of them.
8.1.3. The pipes and all other parts of the fuel installation shall be accommodated on the vehicle at
sites protected to the fullest possible extent. Twisting and bending movements, and
vibrations of the vehicle's structure or drive unit, shall not subject the components of the fuel
installation to friction, compression or any other abnormal stress.

PART II-2
APPROVAL OF VEHICLE WITH REGARD TO THE PREVENTION
OF FIRE RISKS IN THE EVENT OF REAR COLLISION
9.6. Definitions and Test Requirements
9.6.1. Paragraphs 7. to 8.2.2. of Part II-1 shall apply.
9.6.2. The vehicle test shall be performed according to the procedures described in Annex 4 of this
Regulation.
9.6.3. After the collision test, the performance requirements of Paragraphs 9.1. to 9.4. of Part II-1
shall be met.

PART IV
APPROVAL OF VEHICLES WITH REGARD TO THE INSTALLATION OF APPROVED FUEL TANK(S)
12. DEFINITIONS
For the purposes of this Part of the Regulation:
12.1. "Approval of a vehicle" means the approval of a vehicle type with regard to the installation
of liquid fuel tank(s) approved pursuant to Part III of this Regulation;
12.2. "Vehicle type" means vehicles which do not differ in such essential respects as:
12.2.1. The manufacturer's type designation;
12.2.2. In vehicles of Category M the position of the tank(s) in the vehicle in so far as it has a
negative effect on the requirements of Paragraph 5.10.;
13. REQUIREMENTS FOR THE INSTALLATION OF LIQUID FUEL TANK(S)
13.1. The requirements stated in Paragraphs 5.4., 5.5., 5.6., 5.7., 5.8., 5.10., and 5.11. above
shall be complied with.
13.2. In case the tanks are approved without their accessories, those accessories used during
the tests on the tanks and identified in the manufacturer’s documentation according to
Paragraph 11.2. above shall, at the request of the manufacturer, be included in the approval
pursuant to Part IV of this Regulation. Additional accessories shall be included provided that
the Technical Service is satisfied that the vehicle complies with the requirement of Parts III
and IV of this Regulation.
14. MODIFICATIONS OF THE TYPE OF VEHICLE OR TANK
14.1. Every modification of the type of vehicle or tank shall be notified to the Type Approval
Authority which approved the vehicle type. The Authority may then either:
14.1.1. Consider that the modifications made are unlikely to have appreciable adverse effects, and
that in any case the vehicle still meets the requirements; or
14.1.2. Require a further test report from the Technical Service responsible for conducting the tests.
14.2. Without prejudice to the provisions of Paragraph 14.1 above, a variant of the vehicle tested
according to Part II of this Regulation whose unladen mass does not differ by more than
± 20% from that of the approval-tested vehicle shall not be regarded as a modification of the
vehicle type.
14.3. Notice of confirmation of approval or of refusal of approval, specifying the modifications shall
be communicated by the procedure specified in Paragraphs 3.1.3., 3.2.3. or 3.3.3. above to
the Contracting Parties to the Agreement which apply this Regulation.

17.6. Even after the entry into force of the Supplement 3 to the 02 series of amendments to this
Regulation, approvals of the vehicles to the preceding supplements to the 02 series of
amendments shall remain valid and Contracting Parties applying this Regulation shall
continue to grant extensions to such approvals and shall continue to accept them.
17.7. As from the official date of entry into force of the 03 series of amendments, no Contracting
Party applying this Regulation shall refuse to grant or refuse to accept type approvals under
this Regulation as amended by the 03 series of amendments.
17.8. As from September 1, 2018, Contracting Parties applying this Regulation shall grant type
approvals only if the vehicle type to be approved meets the requirements of this Regulation
as amended by the 03 series of amendments.
17.9. Contracting Parties applying this Regulation shall not refuse to grant extensions of type
approvals for existing types which have been granted according to the preceding series of
amendments to this Regulation.
17.10. Even after the date of entry into force of the 03 series of amendments to this Regulation,
Contracting Parties applying this Regulation shall continue to accept type approvals to the
preceding series of amendments to the Regulation which are not affected by the 03 series
of amendments.
17.11. Notwithstanding the transitional provisions above, Contracting Parties whose application of
this Regulation comes into force after the date of entry into force of the most recent series of
amendments are not obliged to accept type approvals which were granted in accordance
with any of the preceding series of amendments to this Regulation.
18. 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 forms certifying approval or refusal or withdrawal of approval, issued in other
countries, are to be sent.

7.2. For fuel tanks made of a plastics material, state material and trade name or mark: .....................
........................................................................................................................................................
7.3. Characteristics of fuel installation (site, connections, etc.): ...........................................................
........................................................................................................................................................
8. Description of electrical installation (site, attachment, protection, etc.): ........................................
........................................................................................................................................................
9. Description of the impact tests: ......................................................................................................
Frontal (Type/Approval or report number): ....................................................................................
Side (Type/Approval or report number): ........................................................................................
Rear (Type/Approval or report number): ........................................................................................
10. Vehicle submitted for approval on: .................................................................................................
11. Technical Service responsible for conducting approval tests: .......................................................
12. Date of report issued by that Service: ............................................................................................
13. Number of report issued by that Service: .......................................................................................
14. Approval granted/extended/refused/withdrawn
15. Position of approval mark on the vehicle: ......................................................................................
16. Place: .............................................................................................................................................
17. Date: ...............................................................................................................................................
18. Signature: .......................................................................................................................................
19. The following documents, bearing the approval number shown above, are annexed to this
communication: ..............................................................................................................................
Drawings and layout diagrams of the fuel tank, the fuel installation, the electrical installation,
and other components of importance for the purposes of this Regulation.

11. Approval granted/extended/refused/withdrawn
12. Position of approval mark on the fuel tank: ....................................................................................
13. Place: .............................................................................................................................................
14. Date: ...............................................................................................................................................
15. Signature: .......................................................................................................................................
16. The index to the information package lodged with the Type Approval Authority, which may be
obtained on request, is attached.

The above approval mark affixed to a vehicle shows that the type concerned was approved in the
Netherlands (E4) pursuant to Regulations Nos. 34 Parts I or IV and II-2 and 33. The approval numbers
indicated that, at the date when the respective approvals were given, Regulation No. 34 included the
03 series of amendments and Regulation No. 33 was still in its original form.
Model C
(See Paragraph 3.2.4 of this Regulation)
The above approval mark affixed to a fuel tank shows that the type concerned was approved in the
Netherlands (E4) pursuant to Part III of Regulation No. 34, for a universal use including its accessories,
under approval No. 031234. The first two digits (03) of the approval number indicate that the approval
was granted in accordance with the requirements of Regulation No. 34 as amended by the 03 series of
amendments.

ANNEX 3
FRONTAL-COLLISION TEST AGAINST A BARRIER
1. PURPOSE AND SCOPE
The purpose of this test is to simulate the conditions of frontal collision against a fixed
obstacle or by another vehicle approaching from the opposite direction.
2. INSTALLATIONS, PROCEDURES AND MEASURING INSTRUMENTS
2.1. Testing Ground
2.2. Barrier
The test area shall be large enough to accommodate the run-up track, barrier and technical
installations necessary for the test. The last part of the track, for at least 5m before the
barrier, shall be horizontal, flat and smooth.
The barrier consists of a block of reinforced concrete not less than 3m wide in front and not
less than 1,5m high. The barrier shall be of such thickness that it weighs at least 70t. The
front face shall be vertical, perpendicular to the axis of the run-up track, and covered with
plywood boards 2cm thick in good condition. The barrier shall be either anchored in the
ground or placed on the ground with, if necessary, additional arresting devices to limit its
displacement. A barrier with different characteristics, but giving results at least equally
conclusive, may likewise be used.
2.3. Propulsion of Vehicle
At the moment of collision, the vehicle shall no longer be subject to the action of any
additional steering or propelling device. It shall reach the obstacle on a course perpendicular
to the collision wall; the maximum lateral misalignment tolerated between the vertical
median line of the front of the vehicle and the vertical median line of the collision wall is ±
30cm.
2.4. State of Vehicle
2.4.1. The vehicle under test shall either be fitted with all the normal components and equipment
included in its unladen kerb weight or be in such condition as to fulfil this requirement so far
as the components and equipment affecting fire risks are concerned.
2.4.2. If the vehicle is driven by external means, the fuel installation shall be filled to at least 90%
of its capacity either with fuel or with a non-inflammable liquid having a density and a
viscosity close to those of the fuel normally used. All other systems (brake-fluid header
tanks, radiator, etc.) may be empty.
2.4.3. If the vehicle is driven by its own engine, the fuel tank shall be at least 90% full. All other
liquid-holding tanks may be filled to capacity.
2.4.4. If the manufacturer so requests, the technical service responsible for conducting the tests
may allow the same vehicle as is used for tests prescribed by other Regulations
(including tests capable of affecting its structure) to be used also for the tests prescribed by
this Regulation.

ANNEX 4
PROCEDURE FOR REAR-END COLLISION TEST
1. PURPOSE AND SCOPE
1.1. The purpose of the test is to simulate the conditions of rear-end collision by another vehicle
in motion.
2. INSTALLATIONS, PROCEDURES AND MEASURING INSTRUMENTS
2.1. Testing Ground
The test area shall be large enough to accommodate the impactor (striker) propulsion
system and to permit after-collision displacement of the vehicle struck and installation of the
test equipment. The part in which vehicle collision and displacement occur shall be
horizontal, flat and uncontaminated, and representative of a normal, dry, uncontaminated
road surface.
2.2. Impactor (Striker)
2.2.1. The impactor shall be of steel and of rigid construction.
2.2.2. The impacting surface shall be flat, not less than 2,500mm wide, and 800mm high, and its
edges shall be rounded to a radius of curvature of between 40 and 50mm. It shall be clad
with a layer of plywood 20 +/- 2mm thick, in good condition.
2.2.3. At the moment of collision the following requirements shall be met:
2.2.3.1. The impacting surface shall be vertical and perpendicular to the median longitudinal plane of
the vehicle struck;
2.2.3.2. The direction of movement of the impactor shall be substantially horizontal and parallel to
the median longitudinal plane of the vehicle struck;
2.2.3.3. The maximum lateral deviation tolerated between the median vertical line of the surface of
the impactor and the median longitudinal plane of the vehicle struck shall be 300mm. In
addition, the impacting surface shall extend over the entire width of the vehicle struck;
2.2.3.4. The ground clearance of the lower edge of the impacting surface shall be 175 ± 25mm.
2.3. Propulsion of the Impactor
The impactor may either be secured to a carriage (moving barrier) or form part of a
pendulum.
2.4. Special Provisions Applicable Where a Moving Barrier is Used
2.4.1. If the impactor is secured to a carriage (moving barrier) by a restraining element, the latter
shall be rigid and be incapable of being deformed by the collision; the carriage shall at the
moment of collision be capable of moving freely and no longer be subject to the action of the
propelling device.

2.7.4. If the manufacturer so requests, the following derogation shall be permitted:
2.7.4.1. The technical service responsible for conducting the tests may allow the same vehicle as is
used for tests prescribed by other Regulations (including tests capable of affecting its
structure) to be used also for the tests prescribed by this Regulation; and
2.7.4.2. The vehicle may be weighted to an extent not exceeding 10% of its unladen kerb weight
with additional weights rigidly secured to the structure in such a way as not to affect the
behaviour of the structure of the passenger compartment during the test.
2.8. Measuring Instruments
The instruments used to record the speed referred to in Paragraphs 2.4.2. and 2.5.4. above
shall be accurate to within 1%.
3. EQUIVALENT TEST METHODS
3.1. Equivalent test methods are permitted provided that the conditions referred to in this
Regulation can be observed either entirely by means of the substitute test or by calculation
from the results of the substitute test.
3.2. If a method other than that described in Paragraph 2 above is used, its equivalence shall be
demonstrated.

3.2. Prior to the test, the tank shall be filled to 50% of its capacity with testing fuel and stored,
without being sealed, at an ambient temperature of 313K ± 2K (40°C ± 2°C) until the weight
loss per unit time becomes constant, but for not more than four weeks (preliminary storage
time).
3.3. The tank shall then be emptied and be refilled to 50% of its capacity with test fuel, after
which it shall be hermetically sealed and be stored at a temperature of 313K ± 2K
(40°C ± 2°C). The pressure shall be adjusted when the contents of the tank have reached
the testing temperature. During the ensuing test period of eight weeks, the loss of weight
due to diffusion during the test period shall be determined. The maximum permissible
average loss of fuel shall be 20g per 24h of testing time.
3.4. If the loss due to diffusion exceeds the value indicated in Paragraph 3.3., the test described
there shall be carried out again, on the same tank, to determine the loss by diffusion at
296K ± 2K (23°C ± 2°C), but under the same conditions otherwise. The loss so measured
shall not exceed 10g per 24h.
4. RESISTANCE TO FUEL
After the test referred to in Paragraph 3, the tank shall still meet the requirements set out in
Paragraphs 1 and 2.
5. RESISTANCE TO FIRE
The tank shall be subjected to the following tests.
5.1. For 2min, the tank, fixed as on the vehicle, shall be exposed to flame. There shall be no
leakage of liquid fuel from the tank.
5.2. Three tests shall be made on different tanks filled with fuel as follows:
5.2.1. If the tank is designed for installation on vehicles equipped with either a positive ignition
engine or a compression ignition engine, three tests shall be carried out with tanks filled with
premium-grade gasoline;
5.2.2. If the tank is only designed for installation on vehicles equipped with a compression-ignition
engine, three tests shall be carried out with tanks filled with diesel fuel;
5.2.3. For each test the tank and its accessories shall be installed in a testing fixture simulating
actual mounting conditions as far as possible. The method whereby the tank is fixed in the
fixture shall correspond to the relevant specifications for its installation. In the case of tanks
designed for a specific vehicle use, vehicle parts which protect the tank and its accessories
against exposure to flame or which affect the course of the fire in any way, as well as
specified components installed on the tank and plugs, shall be taken into consideration. All
openings shall be closed during the test, but venting systems shall remain operative.
Immediately prior to the test the tank shall be filled with the specified fuel to 50% of its
capacity.
5.3. The flame to which the tank is exposed shall be obtained by burning commercial fuel for
positive-ignition engines (hereafter called "fuel") in a pan. The quantity of fuel poured into
the pan shall be sufficient to permit the flame, under free burning conditions, to burn for the
whole test procedure.

6. RESISTANCE TO HIGH TEMPERATURE
6.1. The fixture used for the test shall match the manner of installation of the tank on the vehicle,
including the way in which the tank vent works.
6.2. The tank, filled to 50% of its capacity with water at 293K (20°C) shall be subjected for 1h to
an ambient temperature of 368K ± 2K (95°C ± 2°C).
6.3. The results of the test shall be considered satisfactory if, after the test, the tank is not
leaking or seriously deformed.
7. MARKINGS ON THE FUEL TANK
The trade name or mark shall be affixed to the tank; it shall be indelible and clearly legible
on the tank when the latter is installed on the vehicle.

Figure 4
Phase D: End of Test

Fire Risk Prevention.