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Session Report GRPE/79/Add.1

Document Title GTR 2: Amendment 4 as approved by GRPE
Reference Number GRPE/79/Add.1
Document Date 15 July 2019
Document Posted 16 July 2019
Meeting Session(s)

48. The Chair of IWG on Environmental and Propulsion Performance Requirements for L-category vehicles (EPPR) introduced ECE/TRANS/WP.29/GRPE/2019/12, GRPE-79-21-Rev.1 and GRPE-79-22 as a draft proposal for Amendment 4 to UN GTR No. 2.

49. GRPE adopted ECE/TRANS/WP.29/GRPE/2019/12 as amended by GRPE-79-21-Rev.1 as reflected in Addendum 1 to this report as draft Amendment 4 to UN GTR No. 2. GRPE also adopted the technical report (GRPE-79-22) as reproduced in Annex VI of the session report. GRPE requested the secretariat to submit Addendum 1 and Annex VI to WP.29 and AC.3 for consideration and vote at their November 2019 sessions.

59. The Chair of GRPE (Netherlands) reported to WP.29 on the results achieved by GRPE during its seventy-ninth session (for more details see the report of the session ECE/TRANS/WP.29/GRPE/79).

39. The World Forum recalled the report of the Chair of GRPE on its seventy-ninth session (ECE/TRANS/WP.29/GRPE/79) and approved the report.


Proposal to further harmonize test procedures for two-wheeled vehicles equipped with conventional combustion engine technology, including restructuring to dedicate separate sections to test types I (tailpipe emission after cold start), II (idle / free acceleration emissions) and VII (energy efficiency). The amendment aligns the GTR with technological progress, including changes related to

  1. reference fuels
  2. temperature conversion
  3. forced induction systems (turbo/super-chargers)
  4. treatment of open/closed systems
  5. test room humidity
  6. CO2 tolerance, and
  7. reference mass of the vehicle.

Document Status Superseded
Related Documents
GRPE/2019/12 | GTR 2: Proposal for Amendment 4
WP.29/2019/121 | GTR 2: Proposal for Amendment 4