Mr Ammerlaan reported the main “take out” and output from the BAST workshop which is now incorporated into the “dual pane document”.
The suggested amendments to Annex 5 (emanating from a workshop held at BASt), consistent with the procedures for head restraint height measurement defined in Annex 1, were described.
It was noted that there is a lack of clarity on the reference in existing paragraph 2.2.1. “torso angle within 5 degrees of the design angle” – is this +/- 5 degrees or +/- 2.5 degrees? It was noted that this lack of clarity is repeated in other regulatory text. Opinion differed with some believing that a tolerance of +/- 5 degrees was too large while others considered that +/- 2.5 degrees was not sufficient. This point will be considered further but may have to be referred to GRSP.
Report from meeting on TEG official website – document in UN Website – TEGID-14.02
- https://www2.unece.org/wiki/download/attachments/4064167/TEGID-14-02e.pdf
The issue of build and tolerance differences with the 3DH machine was raised with the effect on the identification of the H-point being significant. It was suggested that the GTR should refer to the latest version of 3DH specification with +/-2mm tolerances for the seat pan. The chair agreed to raise this with GRSP given the wider implications of specifying a unique tolerance for the GTR when the tool is used more widely in other regulations.
The group considered whether there were opportunities to establish a new procedure for backset measurement that would reduce or eliminate the dependency on the 3D H machine and also whether such a procedure could also help with BioRID positioning. It was recalled that an earlier decision of the group had been to set aside consideration of assessing the very upright seats seen in vehicles such as micro vans but some felt that the development of a new procedure may help this discussion.
Clarification was sought regarding the use of manufacturer’s design angle or a specific angle. The chair recalled that the objective was to use the design angle if possible but that the option to use a fixed angle remained available.
It was agreed that BASt would host a workshop to explore opportunities for a new procedure and, to ensure all participants could contribute, and to avoid excessive travel, the USA offered to run a parallel workshop, possibly at VRTC. These workshops would work with same, or similar, ideas and to a similar timescale.
All the participants were encouraged to provide ideas for the workshop(s) to Mr Lorenz and Ms Versailles in advance to ensure maximum value could be gained.
Task –