Proposal for amendments to document GRRF/2015/39 concerning UN Regulation No. 109
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Document GRRF/2015/39 proposes to change measurement units for drum speed from min-1 to km.h-1 to align the
requirements with other tyre regulations. This amendment proposal would clarify wording:
1. “speed category symbol” to “speed symbol”,
2. “load capacity index” to “load index”,
3. correct reference to para. 3.2.13. of the Regulation in Annex 7, Appendix 1, and
4. correct the boundary value of the load index in Annex 7, Appendix 1.

Reference Number: GRRF-80-16
Origin: Slovakia
Date: 14 September 2015
Related Documents:
GRRF-81-12 | Proposal for amendments to Regulation No. 109
GRRF/2015/39 | Proposal for an amendment to Regulation No. 109
GRRF/2016/40 | Proposal for amendment to Regulation No. 109
Discussion(s):
Working Party on Brakes and Running Gear | Session 80 | 15-18 Sep 2015

44. The expert from the Slovak Republic introduced ECE/TRANS/WP.29/GRRF/2015/39 as amended by GRRF-80-16 proposing clarifications for Regulation No. 109. The expert from ETRTO recalled that the proposed clarifications would also be relevant for Regulations Nos. 30 and 54. GRRF agreed to resume consideration of these clarifications on the basis of a revised proposal that the experts from ETRTO and the Slovak Republic volunteered to prepare for the September 2016 session of GRRF.