| UN R141: Proposal to amend the 01 series of amendments |
| Reference Number: GRBP-73-03 |
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Proposal from the TPMSTI task force to revise the communication interface protocol of TPMS between towing and towed vehicles of categories N2, N3 and O3, O4, respectively (described in Annex 5 on the basis of the ISO bus requirements) in alignment with UN R13 and ISO updates. The proposal further corrects and clarifies provisions across TPMS, TPRS and CTIS. |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 04 Jan 21 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 141 | Tyre Pressure Monitoring Systems |
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| Proposal to amend the Worn Tyres informal working group Terms of Reference |
| Reference Number: GRBP-73-02 |
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Proposal to expand the scope of the activity to include C2 and C3 tyres. |
| Submitted by: EC |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 04 Jan 21 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
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| UN R41: Proposal for amendments to the 04 series of amendments |
| Reference Number: GRBP-73-04 |
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Proposal to correct some references, which need to be updated as a consequence of document WP.29/2020/70, adopted at the June 2020 WP.29 session, notably
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| Submitted by: IMMA |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 18 Jan 21 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 41 | Motorcycle Noise |
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| UN R51: Proposal for 04 series of amendments |
| Reference Number: GRBP-73-05 |
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Proposal by experts from IWG ASEP for new series of amendments. |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021), 4th UNR51-DG session (28 Jan 2021), and 10th RDASEP session (9-10 Dec 2025) |
| Document date: 19 Jan 21 |
| Document status: Informal GR review |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
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| Status report of the task force on Studded Tyres |
| Reference Number: GRBP-73-07 |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 21 Jan 21 |
| Relevant to: UN Regulation No. 164 | Type Approval of Studded Tyres |
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| Proposal to amend the Worn Tyres working group terms of reference |
| Reference Number: GRBP-73-08 |
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Proposal to include requirements for wet grip of tyres of classes C2 and C3 in worn state to the scope of the working group activities. |
| Submitted by: ETRTO |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 21 Jan 21 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
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| UN R75: Proposal for a corrigendum to the French version of the text |
| Reference Number: GRBP-73-09 |
| Submitted by: ETRTO |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 21 Jan 21 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 75 | Motorcycle and Moped Tires |
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| General information and WP.29 highlights relevant to GRBP activities |
| Reference Number: GRBP-73-10 |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 21 Jan 21 |
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| ETRTO Tyre Performance Study |
| Reference Number: GRBP-73-11 |
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Overview of UTAC CERAM testing designed to consider the impact of additional tightening of tyre performance limits on the balance |
| Submitted by: ETRTO |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 21 Jan 21 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions and UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
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| Status report of the Reversing Warning Sounds task force |
| Reference Number: GRBP-73-12 |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 21 Jan 21 |
| Relevant to: UN Regulation No. 165 | Audible Reversing Warning Systems |
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| Status report of the TPM and Tyre Installation task force |
| Reference Number: GRBP-73-13 |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 21 Jan 21 |
| Relevant to: UN Regulation No. 142 | Tyre Installation and UN Regulation No. 141 | Tyre Pressure Monitoring Systems |
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| General Approach to Estimate Sound Measurement Uncertainties |
| Reference Number: GRBP-73-15 |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 21 Jan 21 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
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| Revised terms of reference for the Sound Measurement Uncertainties informal group |
| Reference Number: GRBP-73-16 |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 21 Jan 21 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions and UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R51: Proposal to amend the 03 series of amendments |
| Reference Number: GRBP-73-17 |
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Measurement Uncertainties informal group proposal to clarify the text and to amend:
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| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 21 Jan 21 |
| Document status: Informal GR review |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
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| Status report of the Worn Tyres working group |
| Reference Number: GRBP-73-18 |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 21 Jan 21 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Proposal to introduce an Ice Tyre definition for C1 class tyres |
| Reference Number: GRBP-73-19 |
| Submitted by: ETRTO |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 21 Jan 21 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| GRB-73: Updates to the provisional agenda |
| Reference Number: GRBP-73-01 |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 26 Jan 21 |
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| GRBP Meeting Schedule, Holidays & Milestones |
| Reference Number: GRBP-71-13/Rev.5 |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 26 Jan 21 |
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| Working group on Worn Tyres: Proposal for revised terms of reference |
| Reference Number: GRBP-73-27/Rev.1 |
| Submitted by: EC, ETRTO, and France |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 29 Jan 21 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Technical support for the impact assessment on Euro 5 step of L-category sound emissions level limits |
| Reference Number: GRBP-73-26 |
| Submitted by: EC |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 27 Jan 21 |
| Relevant to: UN Regulation No. 9 | Three-Wheeled Cycle Noise and UN Regulation No. 41 | Motorcycle Noise |
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| Study on future sound-limit values |
| Reference Number: GRBP-73-25 |
| Submitted by: ACEA |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 28 Jan 21 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
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| Priorities of the Working Party on Noise and Tyres (GRBP) |
| Reference Number: GRBP-73-24 |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 27 Jan 21 |
| Relevant to: UN Regulation No. 41 | Motorcycle Noise, UN Regulation No. 51 | Vehicle Noise Emissions, UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance, and UN Regulation No. 165 | Audible Reversing Warning Systems |
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| Status report of the Sound Measurement Uncertainties informal working group |
| Reference Number: GRBP-73-14/Rev.1 |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 28 Jan 21 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
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| Running order of the 73rd (January 2021) GRBP session |
| Reference Number: GRBP-73-06/Rev.1 |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) |
| Document date: 26 Jan 21 |
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| Study on sound level limits of M- and N-category vehicles |
| Reference Number: GRBP-73-23 |
| Submitted by: EC |
| Meeting Sessions: 73rd GRBP session (26-29 Jan 2021) and 2nd TFVS session (26 May 2021) |
| Document date: 27 Jan 21 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |