Filtered:UN R117 Tire Noise, Wet Adhesion, and Rolling ResistanceRemove filter
UN R117: Proposal for a Supplement 3 to the 04 series of amendments
Reference Number: GRBP/2024/23
Proposal from the Wet Grip on Worn Tyres informal group to standardize provisions for the water depth measurement and to reduce the track friction range requirements under the test procedures.
UN R117: Proposal for a Supplement to the 04 series of amendments
Reference Number: GRBP/2024/25
Proposal to clarify that wet adhesion provisions apply to C1, C2, and C3 tyres, correct ISO and internal references, clarify symbols “ARC” and “ARR” relationships to indoor drum test method, and clarify application to M+S marked tyres.
UN R117: Proposal for Supplement 3 to the 04 series of amendments
Reference Number: GRBP-80-11
Proposal by the IWGWGWT to replace document ECE/TRANS/WP.29/GRBP/2024/23. This proposal aims as a first step to standardize the water depth measurement.
UN R117: Presentation on the Evolution of the regulation
Reference Number: GRBP-80-25
ETRTO recommends to create a GRBPGOIE (Group of Interested Experts) involving CP’s
and NGO’s and with the goal to present an Informal Document by GRBP February 2025
session to validate the concept to be followed and implemented in a Working Document
by September 2025
Informal Working Group: A group of experts authorized to develop proposals for consideration by WP.29 without being bound by formal UN rules of procedure.