Document ID: chunk:federal_register_of_legislation:F2006L02678:body:0:p13
Version: federal_register_of_legislation:F2006L02678
Segment Type: other
Provision Reference: 
Character Range: 36838–39860

viewed in plan, and shall not be withdrawn again until the retracting force has been determined;
4.6.2.2.4.                  the retraction force shall be measured in the test 'Strap' 'Forward' of the point where it would contact  the first 'Sash Guide' device after passing over the shoulder of the wearer; and
4.6.2.2.5.                  where the assembly incorporates a device that upon manual or automatic operation, prevents the belt from being completely retracted, such a device shall not be operating when this requirement is assessed.
4.6.3.                               'Automatic Length Adjusting and Locking Retractors'
         The locking mechanism of an 'Automatic Length Adjusting and Locking Retractor' shall be designed to provide a locked position for at least every 30 mm of 'Strap' extension from the position when the 'Seatbelt Assembly' is correctly fitted for a '50th Percentile 6 Years Old Child', with the 'Seat' in the rearmost riding position.

4.6.4.                               'Emergency Locking Retractors' (other than 'Type 4N Retractors', for which see Appendix A).
4.6.4.1.                         'Emergency Locking Retractors' shall lock when the retractor and any associated devices to sense acceleration are accelerated at not more than 5 m/s2, the peak acceleration being attained in not less than 40 milliseconds.
4.6.4.1.0.                  Furthermore with a point on the external 'Strap' fixed the locking device shall limit 'Strap' movement, measured from the time of application of the acceleration, to not more than:
4.6.4.1.0.1.            30 mm, when the 'Strap' is withdrawn to a point which is 150 + 5 mm from the fully extended position; and
4.6.4.1.0.2.            80 mm, when the 'Strap' is withdrawn to points 450 + 5 mm and 760 + 5 mm from the fully extended position, if the 'Seatbelt Assembly' includes sufficient 'Strap' to attain these extensions.
4.6.4.1.1.                  This requirement shall be met under positive and negative acceleration in longitudinal, transverse and vertical directions, except that in cases where the device is designed to lock when tilted to any angle in excess of 45° then the locking requirement need be met for longitudinal and transverse directions only.
4.6.4.1.2.                  Sensing of acceleration to meet the requirements of this clause shall not be dependent upon rate of withdrawal of 'Strap' from the retractor.  In demonstrating this requirement, any device dependent for sensing of acceleration on withdrawal of 'Strap' from the retractor may be rendered inoperative.
4.6.4.2.                         'Emergency Locking Retractors' shall be designed in such a way that when the 'Strap' is extended at an acceleration of not more than 20 m/s2 locking occurs within 25 mm of 'Strap' extension.  This requirement shall be met at an extrapolated point representing full extension based on test results achieved at points of extension which are less than the full extensions by 150 + 5 mm, 450 + 5 mm, and 750 + 5