An extract from the ADR
7.3. Harness ‘Anchor Points’
7.3.1. In cases where only one harness ‘Anchorage’ is provided for a
particular seating position, the harness ‘Anchor Point’ must be
located:
7.3.1.1. ‘Rearward’ of transverse plane inclined at the same angle as the
‘Torso Reference Line’ and 500 mm horizontally ‘Rearward’ from
the ‘Seating Reference Point’;
7.3.1.2. not more than 50 mm from the ‘Seating Reference Plane’; and
7.3.1.3. within ‘Area B’ but without the transverse location requirements of
clause 11.2.1.
7.3.2. In cases where two harness ‘Anchorages’ are provided for a
particular seating position, the two ‘Anchor Points’ must be
located:
7.3.2.1. ’Rearward’ of a transverse plane inclined at the same angle as the
‘Torso Reference Line’ and 75 mm horizontally ‘Rearward’ from
the ‘Seating Reference Point’;
7.3.2.2. either side of the ‘Seating Reference Plane’ in such a way that the
distances from the ‘Seating Reference Plane’ do not differ by more
than 100 mm;
7.3.2.3. such that the transverse separation does not exceed 300 mm, and
is either greater than 250 mm or is less than 250 mm by not more
than half the horizontal distance from either ‘Anchor Point’ to the
transverse plane through the ‘Torso Reference Line’; and
7.3.2.4. within ‘Area B’ but without the transverse location requirements of
clause 11.2.1.
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