This revision reproduces the following amendment(s):
UN R51: Proposal for Supplement 7 to 03 series of amendments

Proposal from GRBP to introduce a preliminary real-driving sound emissions test procedure for the purpose of collecting experience on the new test and evaluation concept, add provisions to reduce sound measurement uncertainties, to extend the transitional period until the end of 2023 for micro-vans and micro-trucks, and to otherwise clarify and improve the text.

Authentic and legally binding text WP.29/2022/84