22. The expert of IWG MU presented analyses of measurement uncertainty made by ETRTO and the experts from the project on Strengthening the Effect of quieter tyres on European Roads (STEER) (GRBP-78-06). The expert from IWG MU also gave an update on the C2 tyres noise temperature correction (GRBP-78-04). GRBP took note of these documents.
| GRBP-78-04 | |
| IWGMU-25-02/Add.1 | |
| IWGMU-25-02/Add.2 |