On Friday 30th March, the National Highway Traffic Safety Administration (NHTSA) published a NPRM in the Federal Register to amend FMVSS 210 – Seatbelt Assembly Anchorages.
The NPRM proposes to introduce 2 new Force Application Devices (FAD) which will replace the current body blocks. The FADs will provide a consistent test configuration and more representative load path during the tests.
Force Application Devices (FAD):
- Replace the current body blocks used during the application of the load.
- Represent a mid size adult (FAD1) and a small occupant (FAD2).
- Seat in placed at declared seatback angle and in rearmost lowest position.
- FAD midsagittal plane is vertical and aligned with the seats longitudinal centreline.
- FAD pelvis is resting on the seat and in contact with the seatback.
- The seatbelt is secured over the FAD and slack removed.
Simultaneous testing of adjacent designated seating positions:
- NHTSA have proposed an installation procedure to be used when testing adjacent DSP’s.
- Essentially, the larger FAD1 is installed at each position. If any of the FAD1 are touching, then the inboard FAD is replaced with the small FAD2. This process is repeated until no contact occurs.
Test Procedure / Loads:
- NHTSA is not proposing to change any other requirements in FMVSS 210 (13.45 kN load etc).
- They state that research shows that the new FAD do not increase the stringency of the test.
- Effective date would be 180 days after publication of the Final Rule.
- 100% Compliance date would be the 1st September, 3 years after publication of the Final Rule.
- This could mean either 01/09/2014 or 01/09/2015 depending on how quick NHTSA publish the final rule.
Comments must be submitted to the docket (NHTSA-2012-0036) by 29th May 2012.