17 May 2021 | Web conference
13 May 2021 Framework document on vehicle whole-life compliance PTI-19-02/Rev.5 2021-05-13
14 May 2021 Draft updated terms of reference for the PTI informal group PTI-22-02 2021-05-14
17 May 2021 UN Rule 1: Recommendation on particulate number measurement PTI-22-03 2021-05-17
17 May 2021 RE6: Proposal to introduce particulate number measurements PTI-22-04 2021-05-17