Assessment on the Minimum Sound Level of the Horn
Document GRB-60-16
4 September 2014

Review of vehicle horn regulations across various markets towards assessing the minimum sound level of 87 dB(A) under UN R28.

Submitted by OICA
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Previous Documents, Discussions, and Outcomes
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.

Related and Previous Documents
GRB/2014/4
Relates to UN R28 |