35. For its sixty-second session, scheduled to be held in Geneva from 1 (starting at 2.30 p.m.) to 3 (concluding at 5.30 p.m.) September 2015, GRB noted that the deadline for the submission of official documents to the secretariat was 5 June 2015, twelve weeks prior to the session. The following provisional agenda was adopted:

1. Adoption of the agenda.

2. Regulation No. 28 (Audible warning devices).

3. Regulation No. 41 (Noise of motorcycles): Development.

4. Regulation No. 51 (Noise of M and N categories of vehicles):

1. Development;
2. Additional sound emission provisions. 5. Regulation No. 59 (Replacement silencing systems). 6. Regulation No. 92 (Replacement exhaust silencing systems for motorcycles). 7. Regulation No. 117 (Tyre rolling noise and wet grip adhesion).