The 22nd session of the Task Force on Vehicles Sound will convene on Tuesday 1st September 2026 from 9:00 to 11:30 (CEST) as a hybrid meeting in Geneva. The agenda includes a cross-matrix comparison on approaches to sound traffic modelling, discussion on updating the guidelines of the Task Force as approved at GRBP-74 in September 2021, any other business, and confirmation of the next meeting provisionally scheduled for 20th October 2026 in Barcelona.

The Task Force Vehicles Sound Cross Matrix activity requests input on traffic sound models. Volunteer participants are invited to share information on noise mapping models used in their regions, including model name, year of last update, references, source descriptions, number of vehicle classes, vehicle class descriptions, formulas and parameters for each class, reference roads for tyre rolling sound, comparison to ISO 10844:2021 type approval test tracks, and propagation concepts used.