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Government Agency
US Environmental Protection Agency

You can find more information about US EPA at their website.

Recent WP.29 Contributions from US EPA

20 Jan
EPA Update on the Cleaner Trucks Initiative (GRPE-80-33)
["Uniform provisions concerning the measures to be taken against the emission of gaseous and particulate pollutants from compression-ignition engines and positive ignition engines for use in vehicles Diesel/CNG/LNG Engine Emissions Diesel and CNG/LNG Engine Emissions UN Regulation No. 49 UN R49", "Global Technical Regulation No. 4: Test Procedure for Compression-ignition (C.I.) Engines and Positive-ignition (P.I.) Engines Fuelled with Natural Gas (NG) or Liquefied Petroleum Gas (LPG) with regard to the Emission of Pollutants The Informal Group on Heavy-Duty Hybrids expects to deliver its final draft amendment to GTR No.4 at the January 2014 session of GRPE. This amendment would extend GTR No. 4 to include test procedures to evaluate hybrid heavy-duty vehicles. WHDC Worldwide Heavy-Duty Vehicle Emissions Certification Procedure GTR No. 4 GTR No. 4"]
05 Nov 2019
RDE Analysis and Open Source Tool Development (RDE-07-14)
["Worldwide harmonized Real Driving Emissions test procedure During its January 2018 session, GRPE considered presentations by Japan (GRPE-76-18) and OICA (GRPE-76-19) concerning the development and use of \"real driving emissions\" tests using portable emissions measurement systems. The prospect of proliferating RDE requirements prompted GRPE to add RDE harmonization to its agenda. Global RDE Global Real Driving Emissions Test Procedure WP.29 Regulatory Project Global Real Driving Emissions Test Procedure"]
05 Nov 2019
RDE GTR Development (RDE-07-15)
["Worldwide harmonized Real Driving Emissions test procedure During its January 2018 session, GRPE considered presentations by Japan (GRPE-76-18) and OICA (GRPE-76-19) concerning the development and use of \"real driving emissions\" tests using portable emissions measurement systems. The prospect of proliferating RDE requirements prompted GRPE to add RDE harmonization to its agenda. Global RDE Global Real Driving Emissions Test Procedure WP.29 Regulatory Project Global Real Driving Emissions Test Procedure"]

News & Developments

Fifteen news articles related to US EPA are in the GAR database.