Proposal to make a correction to the procedure of free rolling tyre noise testing described in Annex 8.
Supplement 7 introduced an inconsistency in R51.03 Annex 8. As currently written, it requires free-rolling tyre noise testing to be conducted in accordance with both ISO 362-3:2016 and Annex 3, Appendix 3
Proposal replaces document GRBP/2025/20
Proposal to insert references to Regulations Nos. 37 and 99 and to the International Electrotechnical Commission (IEC) Publication 60061, specifying the use of filament lamps and gas-discharge light sources.