The proposal concerns modification of the method of measuring vehicle internal noise and revises document GRB/2012/12 pursuant to discussions from the last Working Party on Noise session.
30. The expert from the Russian Federation gave a presentation (GRB-57-26) to introduce revised proposals (GRB-57-08, GRB-57-09, GRB-57-10 and GRB-57-11) superseding ECE/TRANS/WP.29/GRB/2012/12. The expert from OICA raised a study reservation on GRB-57-08, aimed at specifying how to test road tractors with or without semitrailers and to refer them to the off-road category of vehicle. GRB agreed to resume discussion on this subject on the basis of a revised proposal tabled by the Russian expert from Russia in cooperation with the experts from France and OICA.