| GRB/2018/8 | Proposal for a draft Resolution on road surface labelling | |
| GRB/2018/9 | Background information for the draft Resolution on road surface labelling | |
| GRB-68-08/Rev.1 | Road surface labeling: Amendments to the proposal for a draft Resolution | |
| GRB-68-09 | NordTyre - the potential for noise reduction using less noisy tyres and road surfaces | |
| GRB-68-11 | ETRTO comments on the road surface labeling proposals | |
| GRB-68-29 | Resolution on road surface labeling: presentation |