| GRB-64-07 | ISO 362-3 Indoor testing of pass-by noise | |
| GRB-64-08 | Subjects for future consideration by the Working Party on Noise | |
| GRB-64-15 | Some proposals to improve efficiency of road vehicle noise regulations | |
| GRB-64-17 | Future work of GRB and points related to L-category vehicles |