Proposal to update and clarify the regulation. The proposal refines definitions, removes the “AWD” abbeviation for “audible warning device” to avoid confusion with its more common use for “all wheel drive”, adds T category agricultural vehicles to the scope, modifies some administrative communications, and proposes three-direction acoustic measurements. The proposal also aims to structure the regulation to enable its application to additional sound warning devices not presently regulated at the international level, excluding acoustic vehicle alerting systems (AVAS) which will be subject to a separate regulation on minimum vehicle sound levels.
3. The expert from the Russian Federation introduced a revised proposal for amendments to Regulation No. 28 (ECE/TRANS/WP.29/GRB/2016/2, GRB-63-01 and GRB-63-04). The proposal received comments from the experts of China, France and IMMA (GRB-63-17, GRB-63-16 and GRB-63-15, respectively). The experts from Japan and Spain indicated that they would need more time to study the proposal and its consequences and requested that its adoption be postponed to the next session. GRB invited all experts to transmit their comments, before the end of March 2016, to the expert from the Russian Federation who would update the proposal for consideration at the next session.