Regulation No. 12-04

Name:Regulation No. 12-04
Description:Driver Protection from Steering Mechanism in an Impact.
Official Title:Uniform Provisions Concerning the Approval of: Vehicles with Regard to the Protection of the Driver Against the Steering Mechanism in the Event of Impact.
Country:ECE - United Nations
Date of Issue:2011-07-07
Amendment Level:04 Series, Supplement 4
Number of Pages:46
Vehicle Types:Car, Component, Light Truck
Subject Categories:Occupant Protection
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:

steering, approval, control, vehicle, regulation, type, test, voltage, electrical, paragraph, impact, high, amendments, series, force, annex, protection, means, date, entry, manufacturer, mechanism, body, power, part, system, vehicles, driver, energy, requirements, tests, technical, block, parts, granted, train, case, service, bus, approved, reess, parties, resistance, paragraphs, figure, contracting, regard, applying, supplement, event

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
) Add.11/Rev.4/Amend.3
E/ECE/TRANS/505 )
July 11, 2016
STATUS OF UNITED NATIONS REGULATION
ECE 12-04
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
VEHICLES WITH REGARD TO THE PROTECTION OF
THE DRIVER AGAINST THE STEERING MECHANISM
IN THE EVENT OF IMPACT
Incorporating:
03 series of amendments
Date of Entry into Force: 24.08.93
Corr. 1 to Revision 3
Date of Entry into Force: 10.03.95
Corr. 2 to Revision 3
Date of Entry into Force: 24.06.09
Corr. 3 to Revision 3
Date of Entry into Force: 11.11.09
Corr. 4 to Revision 3
Date of Entry into Force: 10.11.10
Supplement 1 to the 03 series of amendments
Date of Entry into Force: 12.12.96
Supplement 2 to the 03 series of amendments
Date of Entry into Force: 25.12.97
Corr. 1 to Supplement 2 to the 03 series of amendments
Date of Entry into Force: 23.06.97
Supplement 3 to the 03 series of amendments
Date of Entry into Force: 23.03.00
04 Series of amendments
Date of Entry into Force: 23.06.11
Corr. 1 to 04 Series of amendments
Date of Entry into Force: 23.06.11
Supplement 1 to the 04 series of amendments
Date of Entry into Force: 26.07.12
Supplement 2 to the 04 series of amendments
Date of Entry into Force: 15.07.13
Supplement 3 to the 04 series of amendments
Date of Entry into Force: 10.06.14
Supplement 4 to the 04 series of amendments
Date of Entry into Force: 18.06.16

REGULATION
REGULATION No. 12-04
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF VEHICLES
WITH REGARD TO THE PROTECTION OF THE DRIVER AGAINST
THE STEERING MECHANISM IN THE EVENT OF IMPACT
Contents
1.
Scope
2.
Definitions
3.
Application for Approval
4.
Approval
5.
Specifications
6.
Tests
7.
Modifications and Extension of Approval of the Vehicle Type or Steering Control Type
8.
Conformity of Production
9.
Penalties for Non-conformity of Production
10.
Instructions
11.
Production Definitively Discontinued
12.
Names and Addresses of Technical Services Responsible for Conducting Approval Tests
and of Type Approval Authorities
13.
Transitional Provisions
ANNEXES
Annex 1A

Communication concerning the approval or extension or refusal or withdrawal of
approval or production definitively discontinued of a vehicle type with regard to the
protection of the driver against the steering mechanism in the event of impact,
pursuant to Regulation No. 12.
Annex 1B

Communication concerning the approval or extension or refusal or withdrawal of
approval or production definitively discontinued of a steering control type with
regard to the protection of the driver against the steering mechanism in the event of
impact, pursuant to the relevant part of Regulation No. 12
Annex 2 – Arrangements of Approval Marks
Annex 3 – Frontal-impact Test Against a Barrier
Annex 4 – Body Block Test
Appendix: –
Body Block
Annex 5 – Head Form Test

REGULATION No. 12-04
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF VEHICLES
WITH REGARD TO THE PROTECTION OF THE DRIVER AGAINST
THE STEERING MECHANISM IN THE EVENT OF IMPACT
1. SCOPE
1.1. This Regulation applies to the behaviour of the steering mechanism and to the electrical
power train operating on high voltage as well as the high voltage components and systems
which are galvanically connected to the high voltage bus of the electric power train, of motor
vehicles of Category M , and vehicles of Category N with a maximum permissible mass less
than 1,500kg, with regard to the protection of the occupants in a frontal collision.
1.2. At the request of a manufacturer, vehicles other than those mentioned in Paragraph 1.1.
above may be approved under this Regulation.
2. DEFINITIONS
For the purposes of this Regulation,
2.1. "approval of a vehicle" means the approval of a vehicle type with regard to the protection of
the driver against the steering mechanism in the event of impact;
2.2. "vehicle type" means a category of motor vehicles which do not differ in such essential
respects as;
2.2.1. Vehicle powered by an internal combustion engine:
2.2.1.1. the structure, dimensions, lines and constituent materials of that part of the vehicle forward of
the steering control;
2.2.1.2. the mass of vehicle in running order, as defined in Paragraph 2.18. below;
2.2.2. Vehicle powered by an electric engine:
2.2.2.1. The structure, dimensions, lines and constituent materials of that part of the vehicle forward of
the steering control;
2.2.2.2. The locations of the Rechargeable Electrical Energy Storage Systems (REESS), in so far as
they have a negative effect on the result of the impact test prescribed in this Regulation;
2.2.2.3. mass of the vehicle in running order, as defined in Paragraph 2.18. below.
2.3. "approval of a steering control" means the approval of a steering control type with regard
to the protection of the driver against the steering mechanism in the event of impact;
2.4. "steering control type" means a category of steering controls which do not differ in such
essential respects as:
2.4.1. the structure, dimensions, lines and constituent materials;

2.17. "Impactor" consists of a rigid hemispherical headform 165mm in diameter, in accordance
with Annex 5, Paragraph 3 of this Regulation;
2.18. "Mass of the vehicle in running order" means the mass of the vehicle unoccupied and
unladen but complete with fuel, coolant, lubricant tools and spare wheel, if provided as
standard equipment by the vehicle manufacturer, and REESS.
2.19. "High Voltage" means the classification of an electric component or circuit, if its – working
voltage is >60V and ≤1,500V direct current (DC) or >30V and ≤1,000V alternating current
(AC) root-mean-square (rms);
2.20. "Rechargeable Electrical energy storage system (REESS)" means rechargeable energy
storage system which provides electrical energy for propulsion;
2.21. "Electrical Protection Barrier" the part providing protection against any direct contact to the
high voltage live parts;
2.22. "Electrical power train" means the electrical circuit which includes the traction motor(s), and
may also include the REESS, the electrical energy conversion system, the electronic
converters, the associated wiring harness and connectors, and the coupling system for
charging the REESS;
2.23. "Live parts" means conductive part(s) intended to be electrically energized in normal use;
2.24. "Exposed conductive part" means the conductive part which can be touched under the
provisions of the protection degree IPXXB, and which becomes electrically energized under
isolation failure conditions. This includes parts under a cover that can be removed without
using tools.
2.25. "Direct contact" means the contact of persons with high voltage live parts;
2.26. "Indirect contact" means the contact of persons with exposed conductive parts;
2.27. "Protection degree IPXXB" means protection from contact with high voltage live parts
provided by either an electrical protection barrier or an enclosure and tested using a Jointed
Test Finger (degree IPXXB) as described in Paragraph 4 of Annex 7;
2.28. "Working voltage" means the highest value of an electrical circuit voltage
root-mean-square (rms), specified by the manufacturer, which may occur between any
conductive parts in open circuit conditions or under normal operating conditions. If the
electrical circuit is divided by galvanic isolation, the working voltage is defined for each
divided circuit, respectively;
2.29. "Coupling system for charging the rechargeable Electrical energy storage system
(REESS)" means the electrical circuit used for charging the REESS from an external
electrical power supply including the vehicle inlet;
2.30. "Electrical chassis" means a set made of conductive parts electrically linked together,
whose electrical potential is taken as reference;
2.31. "Electrical circuit" means an assembly of connected high voltage live parts which is
designed to be electrically energized in normal operation;

3.1.2.7. evidence that the steering control complies with the specifications of Paragraphs 5.2.1.4 and
5.2.1.5 of Regulation No. 94 if the application for approval is submitted by the applicant
pursuant Paragraph 5.2.1 below.
3.1.2.8.. A general description of the electric power source type, location and the electrical power train
(e.g. hybrid, electric).
3.1.3. The following shall be submitted to the Technical Service responsible for conducting approval
tests:
3.1.3.1. a vehicle, representative of the vehicle type to be approved, for the test referred to in
Paragraph 5.1. below;
3.1.3.2. at the manufacturer's discretion, with the agreement of the technical service, either a second
vehicle, or those parts of the vehicle regarded by him as essential for the test referred to in
Paragraphs 5.2. and 5.3. below.
3.1.3.3. The competent authority shall verify the existence of satisfactory arrangements for ensuring
effective control of the conformity of production before type approval is granted.
3.2. Steering Control Type
3.2.1. The application for approval of a steering control type with regard to the protection of the
driver against the steering mechanism in the event of an impact shall be submitted by the
steering control manufacturer or by his duly accredited representative.
3.2.2. It shall be accompanied by the undermentioned documents in triplicate and the following
particulars:
3.2.2.1. a detailed description of the steering control type with respect to the structure, the dimensions
and the constituent materials of the steering control;
3.2.2.2. drawings, on an appropriate scale and in sufficient detail, of the steering mechanism and of its
attachment to the vehicle chassis and body.
3.2.2.3. evidence that the steering control complies with the specifications of Paragraphs 5.2.1.4 and
5.2.1.5 of Regulation No. 94, if the application for approval is submitted by the applicant
pursuant Paragraph 5.2.1 below.
3.2.3. A steering control representative of the steering control type to be approved plus, at the
manufacturer's discretion, with the agreement of the technical service, those parts of the
vehicle regarded by him as essential for the test, shall be submitted to the technical service
responsible for conducting approval tests for the test referred to in Paragraphs 5.2. and 5.3.
below.

4.2.5. 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 4.2.4.1. need not be repeated; in such a case the
Regulation and approval numbers and the additional 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 4.2.4.1.
4.2.6. The approval mark shall be clearly legible and be indelible.
4.2.7. The approval mark shall be placed close to or on the vehicle data plate affixed by the
manufacturer.
4.3. Steering-Control Type
4.3.1. If the steering control submitted for separate approval pursuant to this Regulation meets the
applicable requirements of Paragraphs 5. and 6. below and Annexes 4, 5 and 6 to this
Regulation, approval of that steering control type shall be granted. This is only applicable to
steering controls which do not include an airbag.
4.3.2. An approval number shall be assigned to each type approved. Its first two digits (at present
04 corresponding to the 04 series of amendments) 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 shall not assign the same number
to another steering control type as defined in Paragraph 2.4. above.
4.3.3. Notice of approval or of extension or refusal of approval of a steering control type pursuant to
this Regulation shall be communicated to the Parties to the Agreement applying this
Regulation, by means of a form conforming to the model in Annex 1B to this Regulation.
4.3.4. There shall be affixed, conspicuously and in a readily accessible place specified on the
approval form, to every steering control conforming to a steering control type approved under
this Regulation an international approval mark consisting of:
4.3.4.1. a circle surrounding the Letter "E" followed by the distinguishing number of the country which
has granted approval
4.3.4.2. the approval number placed below the circle.
4.3.4.3. the Symbol R94-02 in the case of an approval pursuant Paragraph 5.2.1 below.
4.3.5. The approval mark shall be clearly legible and be indelible.
4.4. Annex 2 to this Regulation gives examples of arrangements of approval marks.

5.4.1.1. After any impact test prescribed in Paragraphs 5.2. and 5.3. the part of the steering control
surface directed towards the driver shall not present any sharp or rough edges likely to
increase the danger or severity of injuries to the driver. Small surface cracks and fissures
shall be disregarded.
5.4.1.1.1. In the case of a projection consisting of a component made of non-rigid material of less than
50 Shore A hardness mounted on rigid support, the requirement of Paragraph 5.4.1.1. shall
only apply to the rigid support.
5.4.2. The steering control shall be so designed, constructed and fitted as not to embody
components or accessories, including the horn control and assembly accessories, capable of
catching in the driver's clothing or jewellery in normal driving movements.
5.4.3. In the case of steering controls not intended to form part of the original equipment they shall
be required to meet the specification when tested in accordance with Annex 4,
Paragraph 2.1.3. and Annex 5, Paragraph 2.3.
5.4.4. In the case of "general steering controls", the requirements shall be met over:
5.4.4.1. the full range of column angles, it being understood that the tests shall be performed at least
for the maximum and minimum column angles for the range of approved vehicle types for
which the controls are intended;
5.4.4.2. the full range of possible impactor and body block positions in relation to the steering control,
it being understood that the test shall be performed at least for the mean position for the
range of approved vehicle types for which the controls are intended. Where a steering column
is used, it shall be of a type corresponding to the "worst case" conditions.
5.4.5. Where adaptors are used to adapt a single type of steering control to a range of steering
column, and it can be demonstrated that with such adaptors the energy-absorbing
characteristics of the system are the same, all the tests may be performed with one type of
adaptor.
5.5. Following the test conducted in accordance with the procedure defined in Annex 3 to this
Regulation the electrical power train operating on high voltage and the high voltage
components and systems which are galvanically connected to the high voltage bus of the
electrical power train shall meet the following requirements:
5.5.1. Protection Against Electrical Shock
After the impact at least one of the four criteria specified in Paragraphs 5.5.1.1. to 5.5.1.4.2.
shall be met.
If the vehicle has an automatic disconnect function or device(s) that galvanically divide the
electrical power train circuit during driving condition, at least one of the following criteria shall
apply to the disconnected circuit or to each divided circuit individually after the disconnect
function is activated.
However criteria defined in 5.5.1.4. shall not apply if more than a single potential of a part of
the high voltage bus is not protected under the conditions of protection degree IPXXB.

5.5.1.4.2. Electrical Power Train Consisting of Combined DC- and AC-buses
If the AC high voltage buses and the DC high voltage buses are galvanically connected
isolation resistance between the high voltage bus and the electrical chassis (R as defined in
Paragraph 5. of Annex 7) shall have a minimum value of 500ΩV of the working voltage.
However, if the protection degree IPXXB is satisfied for all AC high voltage buses or the AC
voltage is equal or less than 30V after the vehicle impact, the isolation resistance between the
high voltage bus and the electrical chassis (R as defined in Paragraph 5. of Annex 7) shall
have a minimum value of 100ΩV of the working voltage.
5.5.2. Electrolyte Spillage
In the period from the impact until 30min after, no electrolyte from the REESS shall spill into
the passenger compartment, and no more than 7% of electrolyte shall spill from the REESS
except open type traction batteries outside the passenger compartment. For open type
traction batteries no more than 7% with a maximum of 5.0L shall spill outside the passenger
compartment. The manufacturer shall demonstrate compliance in accordance with
Paragraph 6. of Annex 7.
5.5.3. REESS Retention
REESS located inside the passenger compartment shall remain in the location in which they
are installed and REESS components shall remain inside REESS boundaries.
No part of any REESS that is located outside the passenger compartment for electrical safety
assessment shall enter the passenger compartment during or after the impact test.
The manufacture shall demonstrate compliance in accordance with Paragraph 7. of Annex 7.
5.6. Specifications of Paragraphs 5.5. to 5.5.3. above are deemed to be met if the vehicle
equipped with an electrical power train operating on high voltage complies with the
specifications of Paragraphs 5.2.8. to 5.2.8.3. of Regulation No. 94, 02 series of amendments.
6. TESTS
6.1 Compliance with the requirements of Paragraphs 5.1. to 5.4. above shall be checked in
accordance with the methods set out in Annexes 3, 4 and 5 to this Regulation. Compliance
with the requirements of Paragraph 5.5. above shall be checked in accordance with the
methods set out in Annex 3 to this Regulation. All measurements should be done on the basis
of ISO 6487 1987.
6.2 However, other tests may be permitted at the discretion of the Type Approval Authority
provided equivalence can be demonstrated. In such a case a report shall be attached to the
approval documentation describing the methods used and the results obtained.

8.3.5. ensure that for each type of vehicle or steering control at least the tests concerning the taking
of measurements are carried out;
8.3.6. ensure that any set of samples or test pieces giving evidence of non-conformity in the type of
test in question shall give rise to a further sampling and test. All necessary steps shall be
taken to restore conformity of the corresponding production.
8.4. The competent authority which has granted type approval may at any time verify the
conformity control methods applied in each production unit.
8.4.1. At every inspection, the test records and production records shall be presented to the visiting
inspector.
8.4.2. The inspector may select samples at random to be tested in the manufacturer's laboratory.
The minimum number of samples may be determined according to the results of the
manufacturer's own checks.
8.4.3. Where the quality level appears unsatisfactory or it seems necessary to verify the validity of
the tests carried out in application of Paragraph 8.4.2., the inspector shall select samples to
be sent to the technical service which conducted the type approval tests.
8.4.4. The competent authority may carry out any test prescribed in this Regulation. The normal
frequency of inspections authorized by the competent authority shall be one per year. In
cases where unsatisfactory results are found during one of these inspections, the competent
authority shall ensure that all necessary steps are taken to restore conformity of production as
rapidly as possible.
9. PENALTIES FOR NON-CONFORMITY OF PRODUCTION
9.1 The approval granted in respect of a vehicle type or steering control type, pursuant to this
Regulation, may be withdrawn if the requirement laid down in Paragraph 8.1. above is not
complied with, or if the vehicle(s) or steering control(s) selected have failed to pass the
checks prescribed in Paragraph 8.2. above.
9.2 If a Contracting Party to the Agreement applying this Regulation withdraws an approval it has
previously granted, it shall forthwith so notify the other Contracting Parties applying this
Regulation by means of a communication form conforming to the model in Annex 1A or
Annex 1B to this Regulation (as appropriate).
10. INSTRUCTIONS
In the case of a steering control type supplied separately from a vehicle, the packaging and
installation instructions must clearly state the vehicle type(s) for which it is intended.
11. PRODUCTION DEFINITIVELY DISCONTINUED
If the holder of the approval completely ceases to manufacture a type of vehicle or type of
steering control approved in accordance with this Regulation, he shall so inform the authority
which granted the approval. Upon receiving the relevant communication that authority shall
inform thereof the other Parties to the 1958 Agreement applying this Regulation by means of
a communication form conforming to the model in Annex 1A or Annex 1B to this Regulation
(as appropriate).

13.3.5. Contracting Parties applying this Regulation shall not refuse to grant extensions of type
approvals issued to the preceding series of amendments to this Regulation, when this
extension does not entail any change to the propulsion system of the vehicle. However, as
from 48 months after the official date of entry into force of the 04 series of amendments,
extensions to type approvals issued to the previous series of amendments shall not be
granted in respect of vehicles having an electrical power train operating on high voltage.
13.3.6. Where at the time of entry into force of the 04 series of amendments to this Regulation
national requirements exist to address the safety provisions of vehicles having an electrical
power train operating on high voltage, those Contracting Parties applying this Regulation may
refuse national approval of such vehicles not meeting the national requirements, unless these
vehicles are type approved to the 04 series of amendments to this Regulation.
13.3.7. As from 48 months after the entry into force of the 04 series of amendments to this
Regulation, Contracting Parties applying this Regulation may refuse national or regional type
approval and may refuse first national or regional registration (first entry into service) of a
vehicle having an electrical power train operating on high voltage which does not meet the
requirements of the 04 series of amendments to this Regulation.
13.3.8. Type Approvals of the vehicles to the 03 series of amendments to this Regulation which are
not affected by the 04 series of amendments shall remain valid and Contracting Parties
applying the Regulation shall continue to accept them.
13.4. Type Approvals of Type of Steering Control
13.4.1. Even after the date of entry into force of the 04 series of amendments, type approvals of the
steering control to the preceding series of amendments to the Regulation shall remain valid
and Contracting Parties applying the Regulation shall continue to accept them, and
Contracting Parties may continue to grant extensions of type approvals to the 03 series of
amendments.
13.4.2. As from the official date of entry into force of Supplement 2 to the 03 series of amendments,
Contracting Parties shall not grant separate type approvals of the type of steering control
which include an airbag.
13.4.3. As from the official date of entry into force of Supplement 2 to the 03 series of amendments,
Contracting Parties may refuse to recognise separate type approvals of the type of steering
control which include an airbag.

7. Vehicle submitted for approval on: ...............................................................................................
8. Technical service responsible for conducting approval tests ......................................................
9. Date of report issued by that service ............................................................................................
10. Number of report issued by that service: ......................................................................................
11. Approval granted/refused/extended/withdrawn : .......................................................................
12. Position of approval mark on the vehicle ......................................................................................
13. Place: ............................................................................................................................................
14. Date: .............................................................................................................................................
15. Signature: .....................................................................................................................................
16. The list of documents deposited with the Type Approval Authorities which has granted
approval is annexed to this communication and may be obtained on request.

9. Number of report issued by that service .......................................................................................
10. Approval granted/refused/extended/withdrawn
11. Position of approval mark or marks on the steering control .........................................................
......................................................................................................................................................
12. Place .............................................................................................................................................
13. Date ..............................................................................................................................................
14. Signature ......................................................................................................................................
15. 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.

Model C
(See Paragraph 4.3.4 of this Regulation)
a = 8mm minimum
The above approval mark affixed to a steering control shows that the steering control type concerned
has, with regard to the protection of the driver against the steering mechanism in the event of impact,
been approved in the Netherlands (E4) pursuant to the relevant part of Regulation No. 12 as amended
by the 04 series of amendments.
Model D
(See Paragraph 4.3.4.3 of this Regulation)
a = 8mm minimum
The above approval mark affixed to a steering control shows that the steering control type concerned has
been approved in the Netherlands (E4) with regard to the protection of the driver against the steering
mechanism in the event of impact, pursuant to provisions of Paragraphs 5.2.1. and/or 5.3.1. of
Regulation No. 12 as amended by the 03 series of amendments.

2.4.3. If the vehicle is driven by its own engine, the fuel tank shall be at least 90% of a full load of
fuel. All other reservoirs shall be filled to capacity.
It shall be allowed by agreement between manufacturer and Technical Service to modify the
fuel system so that an appropriate amount of fuel can be used to run the engine or the
electrical energy conversion system.
In such case, the fuel tank shall be filled to not less than 90% of mass of a full load of fuel with
a non-inflammable liquid of a density between 0.7 and 1.
This requirement does not apply to Hydrogen fuel tanks.
2.4.4. Electrical Power Train Adjustment
2.4.4.1. The REESS shall be at any state of charge, which allows the normal operation of the power
train as recommended by the manufacturer.
2.4.4.2. The electrical power train shall be energized with or without the operation of the original
electrical energy sources (e.g. engine-generator, REESS or electric energy conversion
system), however:
2.4.4.2.1. By the agreement between Technical Service and manufacturer it shall be permissible to
perform the test with all or parts of the electrical power train not being energized in so far as
there is no negative influence on the test result. For parts of the electrical power train not
energized, the protection against electrical shock shall be proved by either physical protection
or isolation resistance and appropriate additional evidence.
2.4.4.2.2. In the case where an automatic disconnect is provided, at the request of the manufacturer it
shall be permissible to perform the test with the automatic disconnect being triggered. In this
case it shall be demonstrated that the automatic disconnect would have operated during the
impact test. This includes the automatic activation signal as well as the galvanic separation
considering the conditions as seen during the impact.
2.4.5. 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.
2.4.6. The steering wheel, if adjustable, shall be placed in the normal position indicated by the
manufacturer or, failing that, midway between the limits of its range(s) of adjustment.
2.5. Speed on Impact
The speed on impact shall be between 48.3km/h (30mph) and 53.1km/h (33mi/h). However, if
the test has been carried out at a higher impact speed and the vehicle has met the
requirements laid down, the test shall be considered satisfactory.
2.6. Measuring Instruments
The instrument used to record the speed referred to in Paragraph 2.5. above shall be
accurate to within 1%.

4.3. A frontal impact test against a barrier is not needed in the case of a vehicle which is identical
with the prototype considered as regards the characteristics specified in Paragraph 2.2. of this
Regulation but whose mass m is greater than m , if m is not more than 1.25m and if the
corrected variation D obtained from the variation D by the formula
D
m ⋅ D
=
m
is such as to show that the new vehicle still meets the requirements of Paragraph 5. of this
Regulation.
5. EQUIVALENT PROCEDURES
5.1. Alternative tests may be permitted at the discretion of the Type Approval Authority provided
equivalence can be demonstrated. A report shall be attached to the approval documentation
describing the method used and the results obtained or the reason for not carrying out the
test.
5.2. Responsibility for demonstrating the equivalence of the alternative method shall rest with the
manufacturer or his agent wishing to use such a method.

2.3. Body Block
The body block shall have the shape, dimensions, mass and characteristics shown in the
appendix to this Annex.
2.3.1. Following are non mandatory additional guidelines for mechanical properties of the body
block:
(a)
(b)
Rate of loading during stiffness measurement: 250 ± 50mm/min;
Centre of gravity: 551.2 ± 6mm from top of the body block;
(c) Moment of inertia about lateral axis through centre of gravity: 2.26 ± 0.23kg × m .
2.4. Measurement of Forces
2.4.1. Measurements shall be made of the maximum force, acting horizontally and parallel to the
longitudinal axis of the vehicle, applied to the body block as a result of impact against the
steering control.
2.4.2. This force may be measured directly or indirectly or may be calculated from values recorded
during the test.
2.5. Propulsion of the Body Block
2.5.1. Any method of propulsion may be used, provided that when the body block strikes the
steering control it is free from all connection with the propelling device. The body block shall
strike this control after an approximately straight trajectory parallel to the longitudinal axis of
the vehicle.
2.5.2. The H Point of the body block, indicated by a special mark, shall be so adjusted that before
the impact it is in the horizontal plane passing through the R Point as indicated by the
manufacturer of the vehicle.
2.6. Speed
The body block shall strike the steering control at a speed of 24.1km/h + 1.2 (15mi/h + 0.8).
However, if the test has been carried out at a higher impact speed and the control has met
the requirements laid down, the test shall be considered satisfactory.
2.7. Measuring Instruments
2.7.1. The instrumentation used to record the parameters referred to in Paragraph 5.2. of this
Regulation shall enable the measurements to be made with the following accuracy:
2.7.1.1. Speed of body block: within 2%;
2.7.1.2. Time recording: within 1/1,000s;
2.7.1.3. The beginning of the impact (zero point) at the moment of first contact of the body block with
the steering control shall be identified on the recordings and films used for analysing the
results of the test.

ANNEX 4 - APPENDIX
BODY BLOCK

3. TEST APPARATUS
3.1. This apparatus consists of a fully guided linear impactor, rigid, with a mass of 6.8kg. Its
impact surface is hemispherical with a diameter of 165mm.
3.2. The head-form shall be fitted with two accelerometers capable of measuring values in the
impact direction.
3.3. Measuring Instruments
3.3.1. The measuring instruments used shall comply with ISO 6487:1987. In addition they shall have
the following characteristics:
3.3.2. Acceleration
3.3.3. Speed
Channel amplitude class 150g CAC
Channel frequency class 600Hz CFC.
Accuracy to within ±1%
3.3.4. Time Recording
The instrumentation shall enable the action to be recorded throughout its duration and the
readings to be made with the accuracy to one-thousandth of a second. The beginning of the
impact at the moment of first contact between the impactor and the steering control shall be
noted on the recordings used for analysing the test.
4. TEST PROCEDURE
4.1. The plane of the steering control shall be set up perpendicular to the direction of impact.
4.2. A maximum of four and a minimum of three positions on each steering control wheel type
shall be impacted. A new steering control shall be used for each impact. On successive
impacts the axial axis of the impactor shall be in line with one of the following points:
4.2.1. The centre of the steering control boss;
4.2.2. The joint of the stiffest or most supported spoke to the inner edge of the steering control rim;
4.2.3. The mid-point of the shortest unsupported area of the steering control rim that does not
include a spoke when hit by the head form;
4.2.4. At the discretion of the type approving authority, the "worst case" position on the steering
control.
4.3. The impactor shall strike the steering control at a velocity of 24.1km/h; this velocity shall be
achieved either by the mere energy of propulsion or by using an additional propelling device.

Figure 1a
Testing Set-up
Figure 1b
Measurement of the Testing Set-up Rigidity
Under a load of 800daN producing a couple of 160m/daN in relation to the Point "B", the displacement in
any direction of the Point "A" shall be lower than 2mm.

ANNEX 7
TEST PROCEDURES FOR THE PROTECTION OF THE OCCUPANTS OF VEHICLES OPERATING
ON ELECTRICAL POWER FROM HIGH VOLTAGE AND ELECTROLYTE SPILLAGE
This Annex describes test procedures to demonstrate compliance to the electrical safety requirements of
Paragraph 5.5. For example, megohmmeter or oscilloscope measurements are an appropriate
alternative to the procedure described below for measuring isolation resistance. In this case it may be
necessary to deactivate the on-board isolation resistance monitoring system.
Before the vehicle impact test conducted, the high voltage bus voltage (V ) (see Figure 1) shall be
measured and recorded to confirm that it is within the operating voltage of the vehicle as specified by the
vehicle manufacturer.
1. TEST SETUP AND EQUIPMENT
If a high voltage disconnect function is used, measurements are to be taken from both sides of
the device performing the disconnect function.
However, if the high voltage disconnect is integral to the REESS or the energy conversion
system and the high-voltage bus of the REESS or the energy conversion system is protected
according to protection degree IPXXB following the impact test, measurements may only be
taken between the device performing the disconnect function and the electrical loads.
The voltmeter used in this test shall measure DC values and have an internal resistance of at
least 10MΩ.

3. ASSESSMENT PROCEDURE FOR LOW ELECTRICAL ENERGY
Prior to the impact a switch S and a known discharge resistor R is connected in parallel to the
relevant capacitance (ref. Figure 2).
Not earlier than 5s and not later than 60s after the impact the switch S shall be closed while the
voltage V and the current I are measured and recorded. The product of the voltage V and the
current I shall be integrated over the period of time, starting from the moment when the switch
S is closed (t ) until the voltage V falls below the high voltage threshold of 60Vdc (t ). The
resulting integration equals the total energy (TE) in joules:
(a)
TE = ∫ V × I
dt
When V is measured at a point in time between 5s and 60s after the impact and the
capacitance of the X-capacitors (C ) is specified by the manufacturer, total energy (TE)
shall be calculated according to the following formula:
(b) TE = 0.5 × C × ( V − 3,600V )
(c)
When V , V (see Figure 1) are measured at a point in time between 5s and 60s after the
impact and the capacitances of the Y-capacitors (C , C ) are specified by the
manufacturer, total energy (TE , TE ) shall be calculated according to the following
formulas:
TE
TE
= 0.5 × C
= 0.5 × C
×
( V
− 3,600)
( V
− 3,600)
×
This procedure is not applicable if the test is performed under the condition where the
electrical power train is not energized.

4.1. Acceptance Conditions
The requirements of Paragraph 5.5.1.3. shall be considered to be met if the Jointed Test Finger
described in Appendix 1, Figure 1 is unable to contact high voltage live parts.
If necessary a mirror or a fiberscope may be used in order to inspect whether the Jointed Test
Finger touches the high voltage buses.
If this requirement is verified by a signal circuit between the Jointed Test Finger and high voltage
live parts, the lamp shall not light.
5. ISOLATION RESISTANCE
The isolation resistance between the high voltage bus and the electrical chassis may be
demonstrated either by measurement or by a combination of measurement and calculation.
The following instructions should be used if the isolation resistance is demonstrated by
measurement.
Measure and record the voltage (V ) between the negative and the positive side of the high
voltage bus (see Figure 1):
Measure and record the voltage (V ) between the negative side of the high voltage bus and the
electrical chassis (see Figure 1):
Measure and record the voltage (V ) between the positive side of the high voltage bus and the
electrical chassis (see Figure 1):
If V is greater than or equal to V , insert a standard known resistance (R ) between the negative
side of the high voltage bus and the electrical chassis.
With R installed, measure the voltage (V ’) between the negative side of the high voltage bus
and the vehicle electrical chassis (see Figure 3). Calculate the isolation resistance (R ) according
to the formula shown below.
R = R *(V /V ’ – V /V ) or R = R *V *(1/V ’ – 1/V )
Divide the result R , which is the electrical isolation resistance value (in Ω) by the working voltage
of the high voltage bus in volt (V).
R (Ω/V) = R (Ω)/Working voltage (V)

Figure 4
Measurement of V ’
Note: The standard known resistance R (Ω) should be the value of the minimum required
isolation resistance (Ω/V) multiplied by the working voltage of the vehicle plus/minus 20%. R is
not required to be precisely this value since the equations are valid for any R ; however, an R
value in this range should provide a good resolution for the voltage measurements.
6. ELECTROLYTE SPILLAGE
Appropriate coating shall be applied, if necessary, to the physical protection in order to confirm
any electrolyte leakage from the REESS after the impact test.
Unless the manufacturer provides means to differentiate between the leakage of different liquids,
all liquid leakage shall be considered as the electrolyte.
7. REESS RETENTION
Compliance shall be determined by visual inspection.

Driver Protection from Steering Mechanism in an Impact.