Working Party
Working Party on Pollution and Energy
80th session | Geneva | 14-17 Jan 2020
4. (b)
UN Global Technical Regulations Nos. 4 (World-wide harmonized Heavy Duty Certification procedure (WHDC)), 5 (World-Wide harmonized Heavy duty On-Board Diagnostic systems (WWH-OBD)) and 10 (Off-Cycle Emissions (OCE))

GRPE may wish to consider proposals for corrigendum to GTR4 from the expert from OICA

GRPE-80-25 | UN GTR 4 Proposal for corrigendum