| GRBP-76-07/Rev.1 | Reverse Warning Regulation – UK Proposal | |
| GRBP/2022/24 | UN R165: Proposal for Supplement 1 |
GRBP will be informed about the WP.29 considerations, at its June 2022 session, of the draft new UN Regulation on reverse warning sound.
| WP.29/2022/88 | Proposal for a new UN Regulation on Reverse Warning systems |