Provisions concerning the installation of forward-facing and rearward-facing ISOFIX child restraint systems of universal and semi-universal categories installed on ISOFIX
or i-Size positions
General
1.1. The test procedure and the requirements in this appendix shall be used to determine the suitability of ISOFIX positions for the installation of ISOFIX child restraint systems of universal and semi-universal categories, as well as to determine the suitability of i-Size seating positions for installing i-Size child restraint systems..
1.2. The tests may be carried out in the vehicle or in a representative part of the vehicle.
For i-Size seating positions, compliance with the i-Size support leg installation requirements may be assessed by a physical test, computer simulation or representative drawings.
Test procedure
ISOFIX positions in the vehicle, defined by the vehicle manufacturer shall be checked to ensure that the CRF listed in paragraph 4 of this Appendix can be accommodated. Where the vehicle manufacturer has indicated that the ISOFIX position(s) will accommodate a particular CRF, then it shall be assumed that smaller CRFs of the same orientation may be accommodated.
i-Size seating positions, defined by the vehicle manufacturer, shall be checked to ensure that it is possible to accommodate both the ISO/R2 and the ISO/F2X child restraint fixtures (see paragraph 4 of this Annex) including the i-Size support leg installation assessment volume.
For both, ISOFIX and i-size position(s), the following procedure shall apply:
2.1. When checking a CRF, on a seat, with or without i-Size support leg installation assessment volume, this seat may be adjusted longitudinally to its rearmost position and in its lowest position.
2.2. Adjust the seat-back angle to the manufacturer’s design position and the head restraint in the lowest and rearmost position. In the absence of any specification an angle of the seat-back corresponding to a torso angle of 25° from the vertical, or the nearest fixed position of the seat-back, shall be used.
When checking a CRF, on a rear seat, with or without i-Size support leg installation assessment volume, the vehicle seat located in front of this rear seat may be adjusted longitudinally forward but not further than the mid position between its rearmost and fore most positions. The seat backrest angle may also be adjusted, but not to a more upright angle than corresponding to a torso angle of 15°.
2.3. Place a cotton cloth on the seat-back and cushion.
2.4. Place the CRF, with or without i-Size support leg installation assessment volume, on the ISOFIX or i-Size position.
2.5. Push, towards ISOFIX anchorages system, on the center between the ISOFIX anchorages with a force of 100 N ± 10 N, applied parallel to the lower surface, and remove the force.
2.6. Attach the CRF, with or without i-Size support leg installation assessment volume, to the ISOFIX anchorages system.
2.7. Push vertically downwards on the centre of the upper surface of the fixture with a force of 100 N ± 10 N, and remove the force.
Requirements
The following testing conditions only apply for the CRF(s), with or without i-Size support leg installation assessment volume, when accommodated in the ISOFIX and/or i-Size position. It is not required that the CRF(s), with or without i-Size support leg installation assessment volume, shall be able to move in and out of the ISOFIX and/or i-Size position under these conditions.
3.1. It has to be possible to accommodate the CRF(s), with or without i-Size support leg installation assessment volume, without interference with the vehicle interior. The CRF base shall have a pitch angle of 15° 10°, above the horizontal plane passing through the ISOFIX anchorages system.
3.2. The ISOFIX top tether anchorage, if any, shall remain accessible.
3.3. Should the above requirements not be met with the adjustments indicated in paragraph 2. above, the seats, the seat-backs, the head restraints may be adjusted to alternative positions designated by the manufacturer for normal use following which the above installation procedure shall be repeated and the requirements verified and met. These alternative positions shall be included as information in Table 2 and/or 3 given in Appendix 3 to this annex. Passenger seats in front of i-Size seating positions may also be displaced to a position forward of the normal position of use. In such cases, the vehicle manufacturer shall provide information in the vehicle handbook, that the respective passenger seat shall not be occupied in such positions of displacement.
3.4 Should the above requirements not be fulfilled when some removable interior fittings were present, such fittings may be removed and then requirements of paragraph 3. have to be verified again and fulfilled. In such a case corresponding information shall be included in Table 2 and/or 3 of Appendix 3 of this annex.
ISOFIX child restraint system size classes and fixtures
A – ISO/F3: Full-Height Forward Facing toddler CRS
B – ISO/F2: Reduced-Height Forward Facing toddler CRS
D – ISO/R2: Reduced-Size Rearward Facing toddler CRS
E – ISO/R1: Rearward Facing infant CRS
F – ISO/L1: Left Lateral Facing position CRS (carry-cot)
G – ISO/L2: Right Lateral Facing position CRS (carry-cot)
The fixtures below shall be constructed with a mass between 5 and 15 kg and shall be of suitable durability and stiffness to satisfy the functional requirements.
ISO/F2X envelope dimensions for a reduced-height second version back surface shape forward-facing toddler CRS, (height 650 mm) – ISOFIX SIZE CLASS B1
Key
1 Limits in the forward and upwards directions
2 Dashed line marks area where a support leg, or similar, of a specific vehicle CRS is allowed to protrude.
3 N/A
4 Further specifications of the connector area are given in Regulation No. 44.
4.4. Full-size rearward facing toddler child restraint system envelope
Figure 4
ISO/R3 envelope dimensions for a full-size rearward-facing toddler
CRS ISOFIX SIZE CLASS C
Figure 4: ISO/R3 envelope dimensions for a full-size rearward-facing toddler
CRS ISOFIX SIZE CLASS C
Key
1 Limits in the rearward and upwards directions
2 Dashed line marks area where a support leg, or similar, of a specific vehicle CRS is allowed to protrude.
3 The backwards limitation (to the right in the figure) is given by the forward-facing
envelope in Figure 2
4 Further specifications of the connector area are given in Regulation No. 44.
4.5. Reduced-size rearward-facing toddler child restraint systems envelope
Figure 5
ISO/R2 envelope dimensions for a reduced-size rearward-facing toddler CRS
ISOFIX SIZE CLASS D
ISO/R2 envelope dimensions for a reduced-size rearward-facing toddler CRS ISOFIX SIZE CLASS D.
Key
1 Limits in the rearward and upwards directions
2 Dashed line marks area where a support leg, or similar, of a specific vehicle CRS is allowed to protrude.
3 The backwards limitation (to the right in the figure) is given by the forward-facing
envelope in Figure 2
4 Further specifications of the connector area are given in Regulation No. 44.
4.6. Rearward facing infant child restraint systems envelope
Figure 6
ISO/R1 envelope dimensions for an infant-size rearward-facing CRS ISOFIX
SIZE CLASS E
ISO/R1 envelope dimensions for an infant-size rearward-facing CRS ISOFIX
SIZE CLASS E
Key
1 Limits in the rearward and upwards directions
2 Dashed line marks area where a support leg, or similar, of a specific vehicle CRS is allowed to protrude.
3 The backwards limitation (to the right in the figure) is given by the forward-facing
envelope in Figure 2
4 Further specifications of the connector area are given in Regulation No. 44.
4.7. Lateral facing child restraint systems envelope
Figure 7
Envelope dimensions for lateral facing position CRS – ISO/L1- ISOFIX SIZE CLASS F
or symmetrically opposite – ISO/L2 – ISOFIX CLASS G
Envelope dimensions for lateral facing position CRS – ISO/L1- ISOFIX SIZE CLASS F or symmetrically opposite – ISO/L2 – ISOFIX CLASS G.
Key
1 Limits in the rearward and upwards directions
2 Dashed line marks area where a support leg, or similar, of a specific vehicle CRS is allowed to protrude.
3 The backwards limitation (to the right in the figure) is given by the forward-facing
envelope in Figure 2
4 Further specifications of the connector area are given in ISO 13216-1, Figures 2 and 3.
Figure 8
Side view of the i-Size support leg installation assessment volume for assessing compatibility of
the i-Size seating positions with support legs of i-Size child restraint systems
Side view of the i-Size support leg installation assessment volume for assessing compatibility of
the i-Size seating positions with support legs of i-Size child restraint systems
Key:
Child Restraint Fixture (CRF).
ISOFIX low anchorages bar.
Plane formed by the bottom surface of the CRF when installed in the designated seating position.
Plane passing through the lower anchorage bar and oriented perpendicular to the median longitudinal plane of the CRF and perpendicular to the plane formed by the bottom surface of the CRF when installed in the designated seating position.
i-Size support leg installation assessment volume representing the geometrical boundaries for an i-Size ISOFIX child restraint system support leg.
Vehicle floor.
Note: Drawing not to scale.
Figure 9
3D view of the i-Size support leg installation assessment volume for assessing compatibility of
the i-Size seating positions with support legs of i-Size child restraint systems
3D view of the i-Size support leg installation assessment volume for assessing compatibility of
the i-Size seating positions with support legs of i-Size child restraint systems
Key:
Child Restraint Fixture (CRF).
ISOFIX low anchorages bar.
Median longitudinal plane of the CRF.
i-Size support leg installation assessment volume.