Proposal to amend Annex B4, para. 6.2.1. to specify that three vehicles selected by the responsible authority shall cover the range of vehicles planned to be measured, and that each change of range requires new selection, but original measurements can be re-used if a vehicle is reselected, and amend para. 6.2.4. to establish approval criteria requiring the difference in cycle energy between wind tunnel method and coastdown method to be within 0.05 for each of three vehicles and within 0.02 for arithmetic average, to require approval recording, to permit facility use for two years with extension every two years upon manufacturer evidence of modifications, measurement results at three-month intervals meeting repeatability and force measurement accuracy requirements, and to require separate approval for each roller chassis dynamometer or moving belt and wind tunnel combination and each combination of wind speeds used.

Proposal to amend UN R83 by deleting Annex 1, paragraph 3.4.3. and renumbering paragraphs 3.4.3.1., 3.4.3.1.1., 3.4.3.1.2. and 3.4.3.1.3. to read 3.4.3., 3.4.3.1., 3.4.3.2. and 3.4.3.3., and deleting Annex 2, paragraph 1.9.2. The concept of “Operating Mode Switch” has been removed from the Regulation and these two paragraphs were omitted from this removal and should be deleted from both the manufacturer’s information document and the addendum to the approval certificate.

This document aims at transposing UN GTR 24 into a new UN Regulation on uniform provisions concerning the approval of non-original and identical replacement brake parts with regards to particle emissions.

TF AVRS proposal to amend ECE/TRANS/WP.29/GRPE/2025/23

Proposal to correct typographic and internal referencing errors