1-3 Sep 2014 | Geneva
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2. Regulation No. 28 (Audible warning devices)

3. Through a presentation (GRB-60-16), the expert from OICA introduced ECE/TRANS/WP.29/GRB/2014/4 proposing amendments to UN Regulation No. 28, in particular, a reduction the prescribed sound level of the audible warning device from 93 to 87 dB(A). While the expert from the Republic of Korea supported this proposal, the experts from India and IMMA requested a study reservation. GRB agreed to revert to this issue at its January 2015 session.

GRB-60-16 | Assessment on the Minimum Sound Level of the Horn
GRB/2014/4 | Proposal for amendments to Regulation No. 28