Regulation No. 66-00

Name:Regulation No. 66-00
Description:Strength of Superstructure - Large Passenger Vehicles.
Official Title:Uniform Provisions Concerning the Approval of: Large Passenger Vehicles with Regard to the Strength of their Superstructure.
Country:ECE - United Nations
Date of Issue:1987-01-30
Amendment Level:00 Series, Supplement 1
Number of Pages:24
Vehicle Types:Bus
Subject Categories:Prior Versions
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Keywords:

vehicle, approval, regulation, test, annex, superstructure, section, body, paragraph, type, centre, energy, gravity, calculation, means, production, tests, strength, manufacturer, mass, technical, number, structure, complete, service, requirements, space, declared, unladen, passenger, granted, pendulum, extension, parts, vehicles, position, absorbed, method, residual, prescribed, regard, authority, responsible, approved, conducting, accordance, total, impact, mark, kerb

Text Extract:

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E/ECE/324 )
E/ECE/TRANS/505 ) Rev.1/Add.65/Amend.1
December 3, 1997
STATUS OF UNITED NATIONS REGULATION
ECE 66
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
LARGE PASSENGER VEHICLES WITH REGARD TO
THE STRENGTH OF THEIR SUPERSTRUCTURE
Incorporating:
00 series of amendments
Date of Entry into Force: 01.12.86
Supplement 1 to the 00 series of amendments
Date of Entry into Force: 03.09.97

REGULATION NO. 66
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF LARGE PASSENGER VEHICLES
WITH REGARD TO THE STRENGTH OF THEIR SUPERSTRUCTURE
REGULATION
1. Scope
2. Definitions
3. Application for Approval
4. Approval
CONTENTS
5. General Specifications and Requirements
6. Test Methods
7. Residual Space
8. Interpretation of Test Results
9. Modifications and Extension of Approval of a Vehicle Type
10. Conformity of Production
11. Penalties for Non-conformity of Production
12. Production Definitely Discontinued
ANNEXES
Annex 1

Communication Concerning the Approval or Refusal or Extension or Withdrawal of
Approval or Production Definitely Discontinued of a Vehicle Type With Regard to the
Strength of its Superstructure Pursuant to Regulation No. 66
Annex 2 – Arrangement of the Approval Marks
Annex 3 – Roll-over Test on a Complete Vehicle
Annex 4 – Roll-over Test on a Body Section
Annex 5 – Pendulum Test on a Body Section
Annex 6 – Verification of Strength of Superstructure by Calculation

3. APPLICATION FOR APPROVAL
3.1. The application for approval of a vehicle type with regard to the strength of its superstructure
shall be submitted by the vehicle manufacturer or by his duly accredited representative.
3.2. It shall be accompanied by three copies of each of the undermentioned documents and by
the following particulars:
3.2.1. a detailed description of the superstructure of the vehicle type including its dimensions,
configuration and constituent materials and its attachment to any chassis frame;
3.2.2. drawings of the vehicle and those parts of its interior arrangement which have an influence
on the strength of the superstructure or on the residual space;
3.2.3. particulars of:
3.2.3.1. the unladen kerb mass (kg)
(In the case of an articulated bus this information shall be given separately for the two rigid
portions);
3.2.3.2. the unladen kerb mass for each axle (kg);
3.2.3.3. the position of the centre of gravity of the unladen vehicle in the longitudinal, transverse and
vertical directions;
3.2.3.4. the maximum distance between the centre lines of the outboard passenger seats.
3.3. Either a complete vehicle or one or more sections of the superstructure representative of the
type to be approved shall be submitted to the technical service responsible for conducting
the approval tests unless the approval is to be conducted by means of calculation, in which
case the calculation shall be submitted to the technical service.
3.4. The competent authority shall verify the existence of satisfactory arrangements for ensuring
effective control of the conformity of production before type-approval is granted.
4. APPROVAL
4.1. If the vehicle submitted for approval to this Regulation meets the requirements of
Paragraph 5 below, approval of that vehicle type shall be granted.
4.2. An approval number shall be assigned to each vehicle 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 shall not assign the same
number to another vehicle type as defined in Paragraph 2.2. above.
4.3. Notice of approval or of refusal or extension 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 to this Regulation and
of drawings and diagrams supplied by the applicant for approval, in a format not exceeding
A4 (210 x 297 mm) or folded to that format and on an appropriate scale.

6.1.2. A roll-over test on a body section or sections representative of a complete vehicle in
accordance with Annex 4 of this Regulation;
6.1.3. A pendulum test on a body section or sections in accordance with Annex 5 to this
Regulation; or
6.1.4. A verification of strength of superstructure by calculation in accordance with Annex 6 to this
Regulation.
6.2. If the methods prescribed in Paragraphs 6.1.2., 6.1.3. or 6.1.4. cannot take account of a
significant variation between one section of the vehicle and another, for example an
air-conditioning installation on the roof, additional test methods or calculations shall be
submitted to the technical service. In the absence of such additional information the vehicle
may be required to undergo the method of test prescribed in Paragraph 6.1.1.
7. RESIDUAL SPACE
7.1. For the purpose of Paragraph 5.1. of this Regulation, the residual space means the volume
within the passenger compartment which is swept when the transverse vertical plane
defined in Figure 1 (a) of this Regulation is moved in a straight line or lines so that the point
"R" in Figure 1 (a) passes from the "R" point of the rearmost outer seat, through the "R"
point of every intermediate outer seat to the "R" point of the foremost outer passenger seat.
7.2. The position of the "R" point shown in Figure 1 (b) shall be assumed to be 500 mm above
the floor under the passengers' feet, 300 mm from the inside surface of the side of the
vehicle and 100 mm in front of the seat back in the centre line of the outboard seats.
8. INTERPRETATION OF TEST RESULTS
8.1. If body sections are tested, the technical service responsible for conducting the test shall
ensure that the vehicle complies with the conditions specified in Appendix 2 of Annex 5 to
this Regulation which contains requirements for the distribution of the main energy
absorbing parts of the superstructure of a vehicle.
9. MODIFICATIONS OF THE VEHICLE TYPE AND EXTENSION OF APPROVAL
9.1. Every modification of the vehicle type shall be notified to the administrative department
which granted the type-approval. The department may then either:
9.1.1. consider that the modifications made are unlikely to have an appreciable adverse effect and
that in any case the vehicle still complies with the requirements; or
9.1.2. require a further test report from the technical service responsible for conducting the tests.
9.2. Confirmation or refusal of approval, specifying the alterations, shall be notified by the
procedure specified in Paragraph 4.3. above to the Parties to the Agreement which apply
this Regulation.
9.3. The competent authority issuing the extension of approval shall assign a series number to
each communication form drawn up for such an extension.

10. CONFORMITY OF PRODUCTION
10.1. Vehicles approved in accordance with this Regulation shall be so manufactured as to
conform to the type-approved by meeting the requirements set our in Paragraph 5 above.
10.2. To verify that conformity, suitable controls of the production shall be carried out. In this case
suitable controls means checking the dimensions of the product as well as the existence of
procedures for the effective control of the quality of products.
10.3. The holder of the approval shall in particular:
10.3.1. have access to control equipment necessary for checking the conformity to each approved
type,
10.3.2. ensure that data of test results are recorded and that annexed documents shall remain
available for a period to be determined in accordance with the administrative service, and
10.3.3. analyse the results of each type of test, in order to verify and ensure the stability of the
product characteristics, making allowance for variation of an industrial production.
10.4. The competent authority which has granted type-approval may at any time verify the
conformity control methods applicable to each production unit.
10.5. The normal frequency of inspections authorised by the competent authority shall be one per
year. In the case where negative results are recorded during one of these visits, the
competent authority shall ensure that all necessary steps are taken to re-establish the
conformity of production as rapidly as possible.
11. PENALTIES FOR NON-CONFORMITY OF PRODUCTION
11.1. The approval granted in respect of a vehicle type pursuant to this Regulation may be
withdrawn if the requirements laid down in Paragraph 10.1. above are not complied with.
11.2. If a 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 copy of the approval form bearing at the end, in large letters, the signed and
dated annotation "APPROVAL WITHDRAWN".
12. PRODUCTION DEFINITELY DISCONTINUED
If the holder of the approval completely ceases to manufacture a type of vehicle 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 Agreement applying this Regulation by means of a copy of the approval
form bearing at the end, in large letters, the signed and dated annotation "PRODUCTION
DISCONTINUED".

ANNEX 1
(Maximum format: A4 (210 x 297 mm))
Communication concerning:
approval
refusal of approval
extension of approval
withdrawal of approval
production definitely
discontinued
of a vehicle type with regard to the strength of its superstructure pursuant to
Regulation No. 66
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 the manufacturer's representative .....................................
...................................................................................................................................................
5. Brief description of the superstructure of the vehicle type including dimensions, configuration
and constituent materials and its attachment to any chassis frame ..........................................
...................................................................................................................................................
6. The position of the centre of gravity of the unladen vehicle in the longitudinal, transverse
and vertical directions ................................................................................................................
...................................................................................................................................................
7. Unladen kerb mass (kg).............................................................................................................
8. Vehicle submitted for approval on..............................................................................................
9. Method of test or calculation employed for approval .................................................................

ANNEX 2
ARRANGEMENT OF THE APPROVAL MARK
(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 strength of the superstructure, been approved in the United Kingdom (E 11) pursuant to Regulation
No. 66 under approval number 002431. The first two digits of the approval number indicate that the
approval was granted in accordance with the requirements of Regulation No. 66 in its original form.

2.5. The test apparatus shall ensure the simultaneous lifting of the axles of the vehicle.
2.6. The vehicle shall be tilted without rocking and without dynamic effects until it rolls over. The
angular velocity shall not exceed 5 degrees per second (0.087 rad/sec).
2.7. High-speed photography, deformable templates or other suitable means shall be used to
determine that the requirement of Paragraph 5.1. of this Regulation has been met. This
shall be verified at not less than two positions, nominally at the front and rear of the
passenger compartment, the exact positions being at the discretion of the technical service.
Templates shall be fixed to substantially non-deformable parts of the structure.
Figure 1

ANNEX 5
PENDULUM TEST ON A BODY SECTION
1. ENERGY LEVEL AND DIRECTION OF IMPACT
1.1. The energy to be transmitted to a particular body section shall be the sum of the energies
declared by the manufacturer to be allocated to each of the cross-sectional rings included in
that particular body section.
1.2. The appropriate proportion of the energy prescribed in Appendix 1 to this Annex shall be
applied to the body section by the pendulum such that at the moment of impact the direction
of motion of the pendulum makes an angle of 25° (+ 0°; - 5°) to the central longitudinal
vertical plane of the body section. The precise angle within this range may be specified by
the vehicle manufacturer.
2. TEST CONDITIONS
2.1. A sufficient number of tests shall be carried out for the technical service conducting the test
to be satisfied that the requirement specified in Paragraph 5.1. of this Regulation has been
met.
2.2. For the purposes of the test body sections shall have sections of the normal structure fitted
between the pillars in relation to the floor, underframe, sides and roof. Sections of such
items as luggage racks, ventilation ducting etc., where fitted, shall also be included.
2.3. Every door and opening window of the body section shall be closed and latched but not
locked. Windows and glazed bulkheads or screens may be glazed or unglazed at the
applicant's discretion.
2.4. Where appropriate seats may also be included, at the option of the manufacturer, in their
normal positions in relation to the structure of the body section. The normal fixings and
joints between all members and attachments shall be incorporated. The backrests if
adjustable shall be in their most upright position and the height of the seats if adjustable
shall be the highest position.
2.5. The side of the body section to be impacted shall be at the discretion of the manufacturer.
Where more than one body section is required to be tested both shall be impacted on the
same side.
2.6. High speed photography, deformable templates or other suitable means shall be used to
determine that the requirement specified in Paragraph 5.1 of this Regulation has been met.
Templates shall be fixed to a substantially non-deformable part of the structure.
2.7. The body section to be tested shall be firmly and securely attached to the mounting frame
through the cross-bearers or parts which replace these in such a way that no significant
energy is absorbed in the support frame and its attachments during the impact.
2.8. The pendulum shall be released from such a height that it strikes the body section at a
speed of between 3 and 8 m/s.

ANNEX 5 - APPENDIX 1
CALCULATION OF TOTAL ENERGY (E*)
ASSUMPTIONS
1.
The shape of the cross-section of the body is assumed to be rectangular.
2.
The suspension system is assumed to be rigidly fixed.
3.
The movement of the body section is assumed to be pure rotation about point "A".

ANNEX 5 - APPENDIX 2
REQUIREMENTS FOR THE DISTRIBUTION OF THE MAIN ENERGY
ABSORBING PARTS OF THE SUPERSTRUCTURE
1. A sufficient number of tests shall be carried out for the technical service to be satisfied that
the complete vehicle meets the requirements of Paragraph 5.1. of this Regulation. This
shall not necessarily require more than one test.
2. Calculations based on data obtained from a test on a body section may be used to
demonstrate the acceptability of another body section which is not identical with the body
section already tested if it has many structural features in common with it.
3. The manufacturer shall declare which pillars of the superstructure are considered as
contributing to its strength and shall also declare the amount of energy (E ) that each pillar is
intended to absorb. These declarations shall meet the following criteria:
(1) ∑ E > E *
Where m is the total number of declared pillars
(2) (a) ∑ E ≥ 0.4 E *
Where n is the number of declared pillars forward of the centre of gravity of the vehicle
(b) ∑ E ≥ 0.4 E *
Where p is the number of declared pillars to the rear of the centre of gravity of the vehicle
(3) L ≥ 0.4 1
(4) L ≥ 0.4 1


Strength of Superstructure - Large Passenger Vehicles.