Document ID: chunk:federal_register_of_legislation:F2012C00535:front:0:p27
Version: federal_register_of_legislation:F2012C00535
Segment Type: other
Provision Reference: 
Character Range: 74560–77450

3.2.  The bays of the body section shall be exactly the same structurally as they are represented in the superstructure, as regards shape, geometry, material, joints.

       3.3. The connecting structures between the bays shall represent the manufacturer's description of the superstructure (see Annex 4, paragraph 3.) and the following rules shall be considered:

       3.3.1. in the case of an original body section taken directly from the actual vehicle layout, the basic and the additional connecting structures (see Annex 4 paragraph 3.1.) shall be the same as that of the vehicle superstructure;

       3.3.2. in the case of an artificial body section, the connecting structures shall be  equivalent in terms of strength, stiffness and behaviour to that of the vehicle superstructure;

       3.3.3. those rigid elements which are not part of the superstructure but which  can encroach on the residual space during deformation, shall be installed into the body sections;

       3.3.4. the mass of the connecting structures shall be included in the mass distribution, in terms of attribution to a particular bay and distribution within that bay.

       3.4. The body sections shall be equipped with artificial supports, to provide the same centre of gravity positions and axis of rotation for them on the tilting platform as that of the complete vehicle.  The supports shall meet the following requirements:

       3.4.1. they shall be fixed to the body section in such a way that they do not provide either reinforcement or extra additional load on the body section;

       3.4.2.  they shall be sufficiently strong and rigid to resist any deformation which could change the direction of the body section motion during the tilting and rollover process;

       3.4.3. their mass shall be included in the mass distribution and centre of gravity position of the body section.

       3.5. The distribution of mass in the body section shall be arranged with the following considerations:

       3.5.1. The whole body section (bays, connecting structures, additional structural elements, supports) shall be considered when checking the validity of the two equations given in Annex 4, paragraph 4.2.1 and 4.2.2.;

       3.5.2.  any masses attached to the bays (see paragraph 4.2.2. and figure 4 of Annex 4) shall be placed and fixed to the body section in such a way that they do not cause reinforcement or additional load or  limitation of the deformation.

       3.5.3.  In the case where occupant restraints are part of the vehicle type, the occupant masses shall be considered as described in Annex 4 and Annex 5.

4. Test procedure

        The test procedure shall be the same as described in paragraph 3. of Annex 5 for a complete vehicle.

       5. Evaluation of the tests

       5.1.  The vehicle type shall be approved if all the body sections pass the rollover test