| GRBP-71-04 | UN R51, UN R117 TF Measurement Uncertainties (MU): Status report | |
| GRBP-71-05 | UN R51 : Task Force Measurement Uncertainties (TF MU) guidelines to the objectives and rules of procedure | |
| GRBP-71-11 | UN R51: EC Study on sound level limits of M- and N- category vehicles | |
| GRBP-71-21 | UN R51: TF Measurement Uncertainties update on the strategic approach to handle uncertainties | |
| GRBP-71-24 | UN R51 : Proposal for revision of ASEP as a future concept of real driving | |
| GRBP-71-25 | UN R51 : ASEP II informal group status report | |
| GRBP-71-31/Rev.1 | UN R51: Draft Terms of Reference TF Measurement Uncertainties (MU) |
GRBP will be informed about the activities of the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) as well as of the Task Force on Measurement Uncertainties (TF MU) and will consider any draft amendments prepared by IWG ASEP or TF MU.