UN GTR No. 4 (Worldwide Heavy-Duty vehicle emission test Cycle (WHDC))
145. The Chair of AC.3 congratulated Japan, as the technical sponsor of the work on the development of Amendment 4 to UN GTR No. 4 on WHDC, on the adoption of the Amendment.
Documentation
WP.29/2021/79
GTR 4: Proposal for Amendment 4
GTR 4: Proposal for Amendment 4
Proposal to improve the text of provisions introduced in Amendment 3 to UN GTR No. 4.