Document ID: chunk:federal_register_of_legislation:F2012C00535:front:0:p16
Version: federal_register_of_legislation:F2012C00535
Segment Type: other
Provision Reference: 
Character Range: 44978–48500

annex referring to the  approval test method which was used.
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The listed documents are held by the Administrative Department and are available on request.

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Date:  ............................................................
Signature:  .........................................................
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 (E11) pursuant to Regulation No. 66 under approval number 022431. The first two digits of the approval number indicate that the approval was granted in accordance with the requirements of the 02 series of amendments to Regulation No. 66.

Annex 3

Determination of THE centre of gravity OF THE vehicle

1. General principles
       1.1. The reference and the total energy to be absorbed in the rollover test depend directly on the position of the vehicle's centre of gravity position.  Therefore, its determination should be as accurate as practicable.  The method of measurement of dimensions, angles and load values, and the accuracy of measurement shall be recorded for assessment by the technical service.  The following accuracy of measuring apparatus is required:

       -  for measurements less than 2000 mm, accuracy of  1 mm
       -  for measurements greater than 2000 mm, accuracy of  0.05 per cent
       -  for measured angles, accuracy of  1 per cent
       -  for measured load values accuracy of  0.2 per cent
       The wheel-base(s) and the distance between the centres of the footprint of the wheel(s) at each axle (the track of each axle) shall be determined from the manufacturer's drawings.

       1.2.              Blocked suspension is specified as the condition for determining centre of gravity and for carrying out the actual rollover test.  The suspension shall be blocked in the normal operating position as defined by the manufacturer

       1.3.              The position of the centre of gravity is defined by three parameters:

       1.3.1.              longitudinal distance (l1) from the centre line of front axle

       1.3.2.              transverse distance (t) from the vertical longitudinal central plane of the vehicle.

       1.3.3.              vertical height (h0) above the flat horizontal ground level when the tyres are inflated as specified for the vehicle

       1.4.              A method for determining l1, t, h0, using load cells is described here.  Alternative methods using lifting equipment and/or tilt tables for example may be proposed by the manufacturer to the technical service who will decide whether the method is acceptable based on its degree of accuracy.

       1.5.              The centre of gravity position of the unladen vehicle (unladen kerb mass Mk) shall be determined by measurements.

       1.6.              The centre of gravity position of the vehicle with total effective mass (Mt) may be determined:

       1.6.1.