|
4.
|
Regulation No. 51 (Noise of M and N categories of vehicles)
|
|
5.
|
Regulation No. 59 (Replacement silencing systems)
|
|
8.
|
Collective amendments: Additional provisions for Regulations Nos. 9, 63 and 92
|
|
12.
|
Definitions and acronyms in Regulations under the responsibility of GRB
|
|
16.
|
Exchange of views regarding the future work of GRB
|