Regulation No. 32-00

Name:Regulation No. 32-00
Description:Collision Structure Performance - Rear-end.
Official Title:Uniform Provisions Concerning the Approval of: Vehicles with Regard to the Behaviour of the Structure of the Impacted Vehicle in a Rear-end Collision.
Country:ECE - United Nations
Date of Issue:1975-07-14
Amendment Level:00 Series, Corrigendum 1, Revision 1
Number of Pages:25
Vehicle Types:Car
Subject Categories:Occupant Protection
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Keywords:

vehicle, approval, regulation, machine, point, seat, angle, torso, paragraph, test, position, type, annex, manufacturer, structure, means, seating, reference, back, plane, actual, design, requirements, rear-end, impact, pan, granted, procedure, prescribed, vertical, compartment, behaviour, passenger, vehicles, impactor, foot, collision, data, horizontal, leg, tests, longitudinal, number, rear, positions, t-bar, forward, weight, defined, appendix

Text Extract:

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E/ECE/324 ) Rev.1/Add.31/Rev.1/Corr. 2
E/ECE/TRANS/505 )
March 17, 2014
STATUS OF UNITED NATIONS REGULATION
ECE 32
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
VEHICLES WITH REGARD TO THE BEHAVIOUR OF THE STRUCTURE
OF THE IMPACTED VEHICLE IN A REAR-END COLLISION
Incorporating:
00 series of amendments
Date of Entry into Force: 01.07.75
Corr. 1 and 2 to the 00 series of amendments
Dated: 11.09.92
Supplement 1 to the 00 series of amendments
Date of Entry into Force: 11.06.07
Corr. 1 to Revision 1 of the Regulation
Dated: 17.03.2014

REGULATION NO. 32
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF VEHICLES WITH REGARD TO THE
BEHAVIOUR OF THE STRUCTURE OF THE IMPACTED VEHICLE IN A REAR-END COLLISION
REGULATION
CONTENTS
1.
Scope
2.
Definitions
3.
Application for approval
4.
Approval
5.
Requirements
6.
Test
7.
Modifications and extension of approval of the vehicle type
8.
Conformity of production
9.
Penalties for non-conformity of production
10.
Production definitely discontinued
11.
Names and addresses of technical services conducting approval tests, and of administrative
departments
ANNEXES
Annex 1 –
Annex 2 –
Annex 3 –
Annex 4 –
Communication concerning the approval or extension or refusal or withdrawal of approval or
production definitely discontinued of a vehicle type with regard to the behaviour of the
structure of the passenger compartment in a rear-end collision, pursuant to Regulation
No. 32
Arrangements of approval marks
Procedure for determining the "H" point and the actual torso angle for seating positions in
motor vehicles
Procedure for rear-end impact test

3. APPLICATION FOR APPROVAL
3.1. The application for approval of a vehicle type with regard to the behaviour of the structure of
the passenger compartment in a rear-end collision shall be submitted by the vehicle
manufacturer or by his duly accredited representative.
3.2. It shall be accompanied by the undermentioned documents in triplicate and by the following
particulars:
3.2.1. a detailed description of the vehicle type with respect to its structure, dimensions, lines and
constituent materials;
3.2.2. drawings of the vehicle showing the vehicle type in front, side and rear elevation and design
details of the rear part of the structure; and
3.2.3. particulars of the vehicle's unladen kerb weight.
3.3. A vehicle representative of the type to be approved shall be submitted to the technical
service responsible for conducting the approval tests.
3.3.1. A vehicle not comprising all the components proper to the type may be accepted for test
provided that it can be shown that the absence of the components omitted has no
detrimental effect on the results of the tests, so far as the requirements of this Regulation
are concerned.
3.3.2. It shall be the responsibility of the applicant for approval to show that acceptance of the
variants referred to in Paragraph 3.3.1. is compatible with compliance with the requirements
of this Regulation.
4. APPROVAL
4.1. If the vehicle submitted for approval pursuant to this Regulation meets the requirements of
Paragraphs 5. and 6. below, approval of that vehicle type 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 the same number
to another vehicle type within the meaning of Paragraph 2.2.2. above.
4.3. Notice of approval or of extension or of refusal or withdrawal of approval or production
definitely discontinued 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 to this Regulation.
4.4. 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,

6. TEST
6.1. The vehicle's compliance with the requirements of Paragraph 5. above shall be checked by
the method set out in Annexes 3 and 4 to this Regulation.
7. MODIFICATIONS AND EXTENSION OF APPROVAL OF THE VEHICLE TYPE
7.1. Every modification of the vehicle type shall be notified to the administrative department
which approved that vehicle type. The department may then either:
7.1.1. consider that the modifications made are unlikely to have appreciable adverse effects, and
that in any case the vehicle still meets the requirements; or
7.1.2. require a further test report from the technical service responsible for conducting the tests.
7.2. Without prejudice to the provisions of Paragraph 7.1. above, a variant of the vehicle whose
unladen kerb weight is lower than the weight of the vehicle submitted for approval shall not
be regarded as a modification of the vehicle type.
7.3. Confirmation or refusal of approval, specifying the alterations shall be communicated by the
procedure specified in Paragraph 4.3. above to the Parties to the Agreement which apply
this Regulation.
7.4. The competent authority issuing the extension of approval shall assign a series number for
such an extension and inform thereof the other Parties to the 1958 Agreement applying this
Regulation by means of a communication form conforming to the model in Annex l to this
Regulation.
8. CONFORMITY OF PRODUCTION
8.1. Every vehicle bearing an approval mark as prescribed under this Regulation shall conform
to the vehicle type approved, more particularly as regards features affecting the behaviour
of the structure of the passenger compartment in a rear-end collision.
8.2. In order to verify conformity as prescribed in Paragraph 8.1. above, a sufficient number of
serially-produced vehicles bearing the approval mark required by this Regulation shall be
subjected to random checks.
8.3. As a general rule, the checks aforesaid shall be confined to the taking of measurements.
However, the vehicles shall, if necessary, be subjected to the checks prescribed in
Paragraph 6. above.
9. PENALTIES FOR NON-CONFORMITY OF PRODUCTION
9.1. The approval granted in respect of a vehicle type pursuant to this Regulation may be
withdrawn if the requirement laid down in Paragraph 8.1. above is not complied with or if a
vehicle has failed to pass the tests prescribed in Paragraph 6. above.
9.2. If a Party to the Agreement which applies this Regulation withdraws an approval it has
previously granted, it shall forthwith notify the other Parties to the Agreement which apply
this Regulation by means of a communication form conforming to the model in Annex 1 to
this Regulation.

ANNEX 1
COMMUNICATION
(Maximum format: A4 (210 x 297mm))
issued by:
Name of administration
.............................................
.............................................
.............................................
concerning:
– APPROVAL GRANTED
– APPROVAL EXTENDED
– APPROVAL REFUSED
– APPROVAL WITHDRAWN
– PRODUCTION DEFINITELY DISCONTINUED
of a vehicle type with regard to the behaviour of the structure of the passenger compartment in a
rear-end collision, pursuant to Regulation No. 32
Approval No.. ................................................. Extension No. ................................
1. Trade name or mark of the vehicle ............................................................................................
2. Vehicle type ................................................................................................................................
3. Manufacturer's name and address ............................................................................................
4. If applicable, name and address of manufacturer's representative ...........................................
...................................................................................................................................................
5. Brief description of the vehicle type as regards its structure, dimensions, lines and
constituent materials ..................................................................................................................
...................................................................................................................................................
6. Weight of vehicle when tested:
Front axle: ..............................
Rear axle: ...............................
Total: ......................................
7. Vehicle submitted for approval on ..............................................................................................

ANNEX 2
ARRANGEMENTS OF APPROVAL MARKS
Model A
(See Paragraph 4.4. of this Regulation)
The above approval mark affixed to a vehicle shows that the vehicle type concerned has with regard to
the behaviour of the structure of the passenger compartment in a rear-end collision, been approved in
the Netherlands (E 4), under the number 002439. The first two digits of the approval number indicate that
the approval was granted in accordance with the requirements of Regulation No. 32 in its original form.
Model B
(See Paragraph 4.5. of this Regulation)
The above approval mark affixed to a vehicle shows that the vehicle type concerned has been approved
in the Netherlands (E 4) pursuant to Regulations Nos. 32 and 24. (In the case of the latter Regulation
the corrected absorption co-efficient is 1.30 m ). The approval numbers indicate that on the dates on
which these approvals were granted Regulation No. 32 had not yet been modified and Regulation No. 24
already included the 03 series of amendments.

2.7. "Design torso angle" means the angle measured between a vertical line through the "R"
point and the torso line in a position which corresponds to the design position of the
seat-back established by the vehicle manufacturer;
2.8. "Centreplane of occupant" (C/LO) means the median plane of the 3-D H machine
positioned in each designated seating position; it is represented by the coordinate of the "H"
point on the "Y" axis. For individual seats, the centreplane of the seat coincides with the
centreplane of the occupant. For other seats, the centreplane of the occupant is specified by
the manufacturer;
2.9. "Three-dimensional reference system" means a system as described in Appendix 2 to
this Annex;
2.10. "Fiducial marks" are physical points (holes, surfaces, marks or indentations) on the vehicle
body as defined by the manufacturer;
2.11. "Vehicle measuring attitude" means the position of the vehicle as defined by the
coordinates of fiducial marks in the three-dimensional reference system.
3. REQUIREMENTS
3.1. Data Presentation
For each seating position where reference data are required in order to demonstrate
compliance with the provisions of the present Regulation, all or an appropriate selection of
the following data shall be presented in the form indicated in Appendix 3 to this Annex:
3.1.1. the coordinates of the "R" point relative to the three-dimensional reference system;
3.1.2. the design torso angle;
3.1.3. all indications necessary to adjust the seat (if it is adjustable) to the measuring position set
out in Paragraph 4.3. below.
3.2. Relationship Between Measured Data and Design Specifications
3.2.1 The coordinates of the "H" point and the value of the actual torso angle obtained by the
procedure set out in Paragraph 4. below shall be compared, respectively, with the
coordinates of the "R" point and the value of the design torso angle indicated by the vehicle
manufacturer.
3.2.2. The relative positions of the "R" point and the "H" point and the relationship between the
design torso angle and the actual torso angle shall be considered satisfactory for the seating
position in question if the "H" point, as defined by its coordinates, lies within a square of
50mm side length with horizontal and vertical sides whose diagonals intersect at the "R"
point, and if the actual torso angle is within 50 of the design torso angle.
3.2.3. If these conditions are met, the "R" point and the design torso angle, shall be used to
demonstrate compliance with the provisions of this Regulation.

4.7. Adjust the feet and leg positions of the 3-D H machine as follows:
4.7.1. Designated Seating Position: Driver and Outside Front Passenger
4.7.1.1. Both feet and leg assemblies shall be moved forward in such a way that the feet take up
natural positions on the floor, between the operating pedals if necessary. Where possible
the left foot shall be located approximately the same distance to the left of the centreplane
of the 3-D H machine as the right foot is to the right. The spirit level verifying the transverse
orientation of the 3-D H machine is brought to the horizontal by readjustment of the seat pan
if necessary, or by adjusting the leg and foot assemblies towards the rear. The line passing
through the "H" point sight buttons shall be maintained perpendicular to the longitudinal
centreplane of the seat.
4.7.1.2. If the left leg cannot be kept parallel to the right leg and the left foot cannot be supported by
the structure, move the left foot until it is supported. The alignment of the sight buttons shall
be maintained.
4.7.2. Designated Seating Position: Outboard Rear
For rear seats or auxiliary seats, the legs are located as specified by the manufacturer. If the
feet then rest on parts of the floor which are at different levels, the foot which first comes
into contact with the front seat shall serve as a reference and the other foot shall be so
arranged that the spirit level giving the transverse orientation of the seat of the device
indicates the horizontal.
4.7.3. Other Designated Seating Positions:
The general procedure indicated in Paragraph 4.7.1. above shall be followed except that the
feet shall be placed as specified by the vehicle manufacturer.
4.8. Apply lower leg and thigh weights and level the 3-D H machine.
4.9. Tilt the back pan forward against the forward stop and draw the 3-D H machine away from
the seat-back using the T-bar. Reposition the 3-D H machine on the seat by one of the
following methods:
4.9.1. If the 3-D H machine tends to slide rearward, use the following procedure. Allow the 3-D H
machine to slide rearward until a forward horizontal restraining load on the T-bar is no
longer required i.e. until the seat pan contacts the seat-back. If necessary, reposition the
lower leg.
4.9.2. If the 3-D H machine does not tend to slide rearward, use the following procedure. Slide the
3-D H machine rearwards by applying a horizontal rearward load to the T-bar until the seat
pan contacts the seat-back (see Figure 2 of Appendix 1 to this Annex)
4.10. Apply a 100 ± 10N load to the back and pan assembly of the 3-D H machine at the
intersection of the hip angle quadrant and the T-bar housing. The direction of load
application shall be maintained along a line passing by the above intersection to a point just
above the thigh bar housing (see Figure 2 of Appendix 1 to this Annex). Then carefully
return the back pan to the seatback. Care must be exercised throughout the remainder of
the procedure to prevent 3-D H machine from sliding forward.

4.15. If a re-run of the installation of the 3-D H machine is desired, the seat assembly should
remain unloaded for a minimum period of 3min prior to the re-run. The 3-D H machine
should not be left loaded on the seat assembly longer than the time required to perform the
test.
4.16. If the seats in the same row can be regarded as similar (bench seat, identical seats, etc.)
only one "H" point and one "actual torso angle" shall be determined for each row of seats,
the 3-D H machine described in Appendix 1 to this Annex being seated in a place regarded
as representative for the row. This place shall be:
4.16.1. in the case of the front row, the driver's seat;
4.16.2. in the case of the rear row or rows, an outer seat.

ANNEX 3 - APPENDIX 1
Figure 1
3-D H Machine Elements Designation

ANNEX 3 – APPENDIX 2
THREE-DIMENSIONAL REFERENCE SYSTEM
1. The three-dimensional reference system is defined by three orthogonal planes established
by the vehicle manufacturer (see Figure).
2. The vehicle measuring attitude is established by positioning the vehicle on the supporting
surface such that the co-ordinates of the fiducial marks correspond to the values indicated
by the manufacturer.
3. The co-ordinates of the "R" point and the "H" point are established in relation to the fiducial
marks defined by the vehicle manufacturer.
Figure
Three-dimensional Reference System

ANNEX 4
PROCEDURE FOR REAR-END IMPACT TEST
1. PURPOSE AND SCOPE
1.1. The purpose of the test is to simulate the conditions of rear-end impact by another vehicle in
motion. The test should make it possible to verify whether the vehicles referred to in
Paragraph 1 of this Regulation meet the requirements defined in Paragraph 5 hereof
concerning the behaviour of the structure of the passenger compartment in a rear-end
collision.
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-impact displacement of the vehicle impacted and installation of
the test equipment. The part in which vehicle impact and displacement occur shall be
horizontal, flat and smooth and have a coefficient of friction of not less than 0.5.
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
covered with plywood boards 20 ± 2mm thick.
2.2.3. At the moment of impact 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 impacted vehicle;
2.2.3.2. the direction of movement of the impactor shall be substantially horizontal and parallel to the
median longitudinal plane of the impacted vehicle;
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 impacted vehicle shall be 300mm. In
addition, the impacting surface shall extend over the entire width of the impacted vehicle;
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.

2.7. State of Vehicle Under Test
2.7.1. 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 of concern to the passenger compartment and the
distribution of the weight of the vehicle as a whole, in running order, are concerned.
2.7.2. The fuel tank must be filled to at least 90% of its capacity with a liquid having a density close
to that of the fuel normally used. All other systems (brake-fluid, header tanks, radiator, etc.)
may be empty.
2.7.3. A gear may be engaged and the brakes may be applied.
2.7.4. If the manufacturer so requests, the following derogations shall be permitted;
2.7.4.1. The technical service responsible for conducting the test 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.
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
3. RESULTS
The instruments used to record the speed referred to in Paragraph 2.4.2. and 2.5.4. above
shall be accurate to within 1%.
3.1. To measure the residual longitudinal space, the amount of longitudinal displacement of the
vertical projection of the floor of the "R" point of the vehicle's rearmost seat in relation to a
reference point on a non-deformed part of the vehicle structure shall be determined.
4. EQUIVALENT TEST METHODS
4.1. 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.
4.2. If a method other than that described in Paragraph 2. above is used, its equivalence must
be demonstrated.
Collision Structure Performance - Rear-end.