Document ID: chunk:federal_register_of_legislation:F2006L02683:body:0:p13
Version: federal_register_of_legislation:F2006L02683
Segment Type: other
Provision Reference: 
Character Range: 37731–40802

Reference Point'.
5.7.                                    SEATING POSITIONS
5.7.1.                              Single 'Seats'- A 'Seat' shall be regarded as providing for one seating position only if the effective cushion width is less than 820 mm.
5.7.2.                              Multiple 'Seats' - If the effective cushion width is 820 mm or more, the number of seating positions shall be the number of complete multiples of 410 mm unless the nature of obstructions or peculiarities of design result in the 'Seat' being 'Approved' for a lesser number of seating positions.
5.7.2.1.                        Where a 'Seat' with an effective cushion width, as determined by clause 5.7.3, of 1230 mm or more has its 'Seat' cushion and 'Seat' back so contoured as to provide one or two clearly identifiable seating positions, the 'Seat' will be considered as providing for two seating positions only if one or more of the following conditions are met:
5.7.2.1.1.                  where the 'Seat' consists of 2 separate 'Seats' with an intervening gap, which may be filled with an insert;
5.7.2.1.2.                  where there are two contoured seating positions, the lateral distance between their centrelines is less than 820 mm; or
5.7.2.1.3.                  where there is one contoured seating position the lateral distance from its centreline to the far end of the adjacent 'Seat' cushion, or to its side wall if this is less than 100 mm from the end of the cushion, is less than 1025 mm.
5.7.3.                              Effective Cushion Width -This is the width of the 'Seat' cushion measured horizontally at the intersection of the 'Seat' cushion with the transverse plane through the 'Torso Reference Line'. It is determined by an analysis of 'Seat', 'Seat' back and vehicle structure sections on the transverse plane as follows:
5.7.3.1.                        if a cushion is separated from another cushion by less than 100 mm the 2 cushions shall be regarded as continuous;
5.7.3.2.                        if an end of the cushion is separated from adjoining structure by less than 100 mm it shall be regarded as extending to the adjoining structure; and
5.7.3.3.                        should the cushion widths determined by 5.7.3.1 and 5.7.3.2 exceed the internal width of the vehicle measured through a point located 562 mm from the 'Seating Reference Point' when measured along the 'Torso Reference Line', then the effective cushion width shall be the internal width of the vehicle determined at this height.
5.8.                                    Not used
5.9.                                     'AREA A'  AND  'AREA B'
5.9.1.                               'Area A' - is dependent on the 'Seat Back Angle' and on its 'Transverse Distance S' from the 'Seating Reference Plane'. The 'Seat Back Angle' shall be taken as the design 'Seat Back Angle'.
5.9.1.1.                        For a particular value of S and subject to clause 5.9.1.2, 'Area A' is located as follows (refer Fig. 1):
5.9.1.1.1.                  above a horizontal transverse