51. In particular, the GRB chair reported that GRB had adopted amendment proposals to the Additional Sound Emission Provisions (ASEP) in Regulation No. 51 (Noise of M and N categories of vehicles) and that these amendments would be submitted to WP.29 and AC.1 in June 2017.

50. The Chair of GRB (France) reported on the results achieved during the sixty-fifth session of GRB (for more details see the report of the session ECE/TRANS/WP.29/GRB/63).

52. The GRB chair further informed that GRB had agreed to draft a new Regulation on reversing alarms and that the main issues for the future Regulation would be its scope (categories of vehicles), the possible existence of a pause switch and the alarm sound composition (sound levels and frequencies).