6. On behalf of IWG ASEP, the expert from Germany reported on their activities (GRBP-72-16) and proposed modifications to the Terms of Reference (ToR) (ECE/TRANS/WP.29/GRBP/2020/10 and GRBP-72-17). GRBP adopted the revised ToR as laid down in Annex III of the session report.

6. On behalf of IWG ASEP, the expert from Germany reported on their activities (GRBP-72-16) and proposed modifications to the Terms of Reference (ToR) (ECE/TRANS/WP.29/GRBP/2020/10 and GRBP-72-17). GRBP adopted the revised ToR as laid down in Annex III of the session report.

29. The Chair presented a revised list of priorities and recurrent items (GRBP-72-12). GRBP noted that the list would be updated and reported to WP.29.

7. The expert from Norway, in his capacity as Chair, Informal Working Group on Measurement Uncertainties (IWG MU), reported on the progress of IWG MU (GRBP-72-11) and proposed revised ToR (GRBP-72-10). GRBP adopted the revised ToR of IWG MU as laid down in Annex IV of the session report.

7. The expert from Norway, in his capacity as Chair, Informal Working Group on Measurement Uncertainties (IWG MU), reported on the progress of IWG MU (GRBP-72-11) and proposed revised ToR (GRBP-72-10). GRBP adopted the revised ToR of IWG MU as laid down in Annex IV of the session report.

6. On behalf of IWG ASEP, the expert from Germany reported on their activities (GRBP-72-16) and proposed modifications to the Terms of Reference (ToR) (ECE/TRANS/WP.29/GRBP/2020/10 and GRBP-72-17). GRBP adopted the revised ToR as laid down in Annex III of the session report.

9. The expert from OICA reported on the progress of the Task Force on Measurement Uncertainties (TF MU) (GRBP-71-04) and presented a strategy on how to handle measurement uncertainties in UN Regulations (GRBP-71-21). GRBP noted that the suggested approach could first apply to UN Regulations Nos. 51 and 117 and, at a later stage, to other UN Regulations as well.

10. Given the importance of this topic, GRBP decided to convert TF MU into an Informal Working Group on Measurement Uncertainties (IWG MU) and approved its Terms of Reference (GRBP-71-05, GRBP-71-31-Rev.1), as laid down in Annex IV. GRBP noted that IWG MU would be chaired by Norway, while OICA would act as secretary.

6. On behalf of the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP), the expert from Germany reported on the IWG ASEP activities (GRBP-71-25). He also introduced in detail the future revision of ASEP in UN Regulation No. 51, based on the concept of real driving and sound expectation model (GRBP-71-24).

6. On behalf of the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP), the expert from Germany reported on the IWG ASEP activities (GRBP-71-25). He also introduced in detail the future revision of ASEP in UN Regulation No. 51, based on the concept of real driving and sound expectation model (GRBP-71-24).

9. The expert from OICA reported on the progress of the Task Force on Measurement Uncertainties (TF MU) (GRBP-71-04) and presented a strategy on how to handle measurement uncertainties in UN Regulations (GRBP-71-21). GRBP noted that the suggested approach could first apply to UN Regulations Nos. 51 and 117 and, at a later stage, to other UN Regulations as well.

10. Given the importance of this topic, GRBP decided to convert TF MU into an Informal Working Group on Measurement Uncertainties (IWG MU) and approved its Terms of Reference (GRBP-71-05, GRBP-71-31-Rev.1), as laid down in Annex IV. GRBP noted that IWG MU would be chaired by Norway, while OICA would act as secretary.

8. The expert of EC informed GRBP about a study on the sound level limits of M- and N-category vehicles which had started in December 2019 and was expected to be completed by June 2021 (GRBP-71-11). The aim of the study was to propose improved sound level limits for next phases of Regulation No. 540/2014 of the European Union in the coming years. The experts from Germany, ETRTO and OICA encouraged the study contractor to follow a holistic approach and to take into account various factors that contribute to sound emissions. GRBP invited those experts to send their comments to the contractor and requested the expert of EC to regularly inform GRBP about the study progress. The expert from Japan pointed out that his country would launch soon a similar study and that the recommendations of both studies should be harmonized internationally.

9. The expert from OICA reported on the progress of the Task Force on Measurement Uncertainties (TF MU) (GRBP-71-04) and presented a strategy on how to handle measurement uncertainties in UN Regulations (GRBP-71-21). GRBP noted that the suggested approach could first apply to UN Regulations Nos. 51 and 117 and, at a later stage, to other UN Regulations as well.

10. Given the importance of this topic, GRBP decided to convert TF MU into an Informal Working Group on Measurement Uncertainties (IWG MU) and approved its Terms of Reference (GRBP-71-05, GRBP-71-31-Rev.1), as laid down in Annex IV. GRBP noted that IWG MU would be chaired by Norway, while OICA would act as secretary.

9. The expert from OICA reported on the progress of the Task Force on Measurement Uncertainties (TF MU) (GRBP-71-04) and presented a strategy on how to handle measurement uncertainties in UN Regulations (GRBP-71-21). GRBP noted that the suggested approach could first apply to UN Regulations Nos. 51 and 117 and, at a later stage, to other UN Regulations as well.

10. Given the importance of this topic, GRBP decided to convert TF MU into an Informal Working Group on Measurement Uncertainties (IWG MU) and approved its Terms of Reference (GRBP-71-05, GRBP-71-31-Rev.1), as laid down in Annex IV. GRBP noted that IWG MU would be chaired by Norway, while OICA would act as secretary.