Proposal to update, clarify, and restructure document GRB/2016/4 which aims to refine definitions, remove the “AWD” abbeviation for “audible warning device” to avoid confusion with its more common use for “all wheel drive”, add T category agricultural vehicles to the scope, modify some administrative communications, and add 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 an updated proposal for amendments to Regulation No. 28 (ECE/TRANS/WP.29/GRB/2016/4, GRB-64-01, GRB-64-09 and GRB-64-22). The proposal received comments from the experts of France, Japan (GRB-64-02), Netherlands, Poland, Switzerland and OICA. GRB adopted the proposal, as amended by Annex II, and requested the secretariat to submit it to the World Forum for Harmonization of Vehicle Regulations (WP.29) and the Administrative Committee (AC.1) for consideration and vote at their March 2017 sessions as a draft Supplement 5 to Regulation No. 28.