8 Feb 2011	Invitation to the 5th HDH Informal Group session (US EPA)	HDH-05-01	2011-02-08
25 May 2011	Heavy-duty hybrid powertrain testing (US EPA)	HDH-05-10	2011-05-25
3 Nov 2011	US EPA/NHTSA programs for greenhouse gas emissions and fuel efficiency standards for medium- and heavy-duty engines (USA, US EPA, and NHTSA)	WP.29-155-11	2011-11-03
3 Nov 2011	US EPA/NHTSA program for new fuel economy and environment labels for a new generation of vehicles (USA, US EPA, and NHTSA)	WP.29-155-12	2011-11-03
16 Nov 2011	Proposal to establish work groups on electric vehicle safety and environmental requirements (EC, NHTSA, US EPA, and MLIT)	WP.29-155-38	2011-11-16
5 Dec 2011	EPA Heavy‐Duty GHG Overview and Hybrid System Testing (US EPA)	HDH-07-09	2011-12-05
5 Dec 2011	Clean Automotive Technology: HHV Component Information (US EPA)	HDH-07-11	2011-12-05
21 Dec 2011	U.S. Environmental Protection Agency Vehicle Compliance Programs (US EPA)	EWG-00-03	2011-12-21