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Introduction

The Working Party on Noise and Tyres (Groupe Rapporteur Bruit et Pneumatiques - GRBP) is a subsidiary body of the World Forum for Harmonization of Vehicle Regulations (WP.29) that prepares regulatory proposals on vehicle noise and tyres for consideration and adoption by WP.29.  To develop those requirements, GRBP conducts research and analysis. 

In 2019, this Working Party changed its name from the Working Party on Noise (Groupe Rapporteur Bruit - GRB) into the Working Party on Noise and Tyres (GRBP). Following the conversion of the former Working Party on Brakes and Running Gear (GRRF) into a new Working Party on Automated/Autonomous and Connected Vehicles (GRVA) in 2018, WP.29 decided to reallocate the former GRRF activities on tyres to GRB. In order to explicitly reflect the new GRB responsibilities on tyre-related issues, WP.29 adapted the title of GRB to GRBP.

GRBP convenes officially twice a year and entrusts informal groups with specific problems that need to be solved urgently or that require special expertise.  More than 100 experts participate in the sessions of GRBP.

The Working Party is open to governmental experts from any member country of the United Nations, and to any regional economic integration organization set up by member countries of the United Nations, and to experts of governmental organizations. Experts of non-governmental organizations (NGOs) may participate in a consultative capacity.  Final decisions are taken by Government representatives by vote at the World Forum (WP.29) level. 

The work of GRBP experts is transparent: All agendas, working documents and reports are openly accessible on this Internet website.