3. GRB resumed consideration of ECE/TRANS/WP.29/GRB/2012/5, tabled by the expert from the Russian Federation. The expert from IMMA stated that, although he supports the objective of correct usage of the terms “noise” and “sound” as well as clarifications in terminology related to noise reduction systems, IMMA wishes to avoid confusion with different application of these terms in UN Regulations Nos. 9, 41, 63 and 92, if the proposed amendments were approved. He added that in regards to the proposed reference in the type approval documentation to the type of catalyst, he was awaiting from the Russian experts the evidence in test results showing the influence of the catalyst type on the level of noise of L category vehicles.

4. The expert from the Russian Federation referred to his informal discussion with IMMA, where it was concluded that it would be more appropriate to introduce the amendments similar to those presented in ECE/TRANS/WP.29/GRB/2012/5 together in all UN Regulations related to noise of L category vehicles and to incorporate such amendments together with other proposals which are expected to be prepared following the development of the relevant legislation of the European Union. Taking this into account, the expert from the Russian Federation withdrew ECE/TRANS/WP.29/GRB/2012/5 for the time being, bearing in mind the introduction of similar proposals into all UN Regulations related to L category vehicle noise in the future.

5. GRB resumed discussion on the issue of transitional provisions, as contained in GRB-58-11-Rev.1, aligning the earlier adopted draft Supplement 1 to the 04 series of amendments to UN Regulation No. 41 (ECE/TRANS/WP.29/GRB/57, Annex II) to the General Guidelines for UN Regulatory Procedures and Transitional Provisions in UN Regulations (ECE/TRANS/WP.29/1044/Rev.1). GRB agreed to wait for the revision of the 1958 Agreement which would also introduce new rules for transitional provisions. Meanwhile, GRB agreed to keep this issue as a reference in its agenda for the future sessions.