UN Rule No. 1
Uniform provisions for periodical technical inspections of wheeled vehicles with regard to the protection of the environment
1 Mar 2021 UN Rule No. 1: Proposal for particle number measurement PTI-20-02 2021-03-01
1 Mar 2021 UN Rule No. 1: Recommendations for particle number measurement (Netherlands) PTI-20-03 2021-03-01
13 May 2021 Agenda for the 22nd PTI informal group session PTI-22-01 2021-05-13
17 May 2021 UN Rule 1: Recommendation on particulate number measurement PTI-22-03 2021-05-17
8 Jun 2021 Agenda for the 23rd PTI informal group session PTI-23-01 2021-06-08
8 Jun 2021 Report on GRPE consideration of PN measurement developments (Netherlands) PTI-23-02 2021-06-08
8 Oct 2021 Minutes of the 23rd PTI informal group session PTI-23-03 2021-10-08
13 Oct 2021 Agenda for the 24th PTI informal group session PTI-24-01/Rev.1 2021-10-13
14 Oct 2021 Illustration (photo) of exhaust pipe design incompatibility PTI-24-05 2021-10-14
19 Oct 2021 Minutes of the 24th PTI informal group session PTI-24-06 2021-10-19
15 Dec 2021 The Danish effort toward Efficient control of Vehicles SCR Systems (Denmark) PTI-25-07 2021-12-15
18 Jun 2021 PTI informal group: Report to WP.29 about results of the 21st, 22nd and 23rd meetings WP.29-184-08 2021-06-18