7 January 2011 Proposal for the development of either amendments to gtr No. 4 adding a new emission test procedure for heavy-duty hybrid vehicles (HD-HV’S) or a new gtr (EU) WP.29/AC.3/29	WP.29/AC.3/29	2011-01-07
10 January 2011 Minutes of the 3rd HDH informal group session HDH-03-10	HDH-03-10	2011-01-10
10 January 2011 Draft agenda for the 4th HDH informal group session HDH-04-01	HDH-04-01	2011-01-10
11 January 2011 Status Report of the GRPE Informal Group on Heavy-Duty Hybrids GRPE-61-16	GRPE-61-16	2011-01-11
11 January 2011 HDH secretary's report to GRPE on heavy-duty hybrids work GRPE-61-17	GRPE-61-17	2011-01-11
8 February 2011 Invitation to the 5th HDH Informal Group session (US EPA) HDH-05-01	HDH-05-01	2011-02-08
8 February 2011 Draft agenda for the 5th HDH Informal Group session HDH-05-02	HDH-05-02	2011-02-08
11 February 2011 Progress report of the informal group on heavy-duty hybrids HDH-04-02	HDH-04-02	2011-02-11
11 February 2011 Release of HILS Open source model for HD Hybrid Vehicle using rigid model (Japan) HDH-04-03	HDH-04-03	2011-02-11
11 February 2011 Feasibility study for Chassis dynamometer based Emission testing procedure as an alternative to HILS for Heavy Duty Hybrid Electric Vehicles (India) HDH-04-04	HDH-04-04	2011-02-11
3 March 2011 Revised minutes of the 3rd HDH informal group session HDH-03-10/Rev.1	HDH-03-10/Rev.1	2011-03-03
3 March 2011 Chairman's report to GRPE on HD Hybrid Informal Group work HDH-04-05	HDH-04-05	2011-03-03
3 March 2011 Minutes of the 4th HDH informal group session HDH-04-06	HDH-04-06	2011-03-03
25 May 2011 Research program on an emissions test procedure for heavy-duty hybrids HDH-05-03	HDH-05-03	2011-05-25
25 May 2011 Quote provided to the Informal Group on Heavy Duty Hybrids concerning the development of an exhaust emissions and CO2 measurement test procedure for heavy duty hybrids (Austria, TU Graz, TU Wien, and IFA) HDH-05-04	HDH-05-04	2011-05-25
25 May 2011 Chalmers offer concerning the development of a heavy-duty hybrid emissions test cycle (Chalmers and Sweden) HDH-05-05	HDH-05-05	2011-05-25
25 May 2011 Overview of Open Source HILS Models for HEV (JASIC) HDH-05-07	HDH-05-07	2011-05-25
25 May 2011 Status of work on the development of a heavy-duty hybrid vehicle emissions test HDH-05-08	HDH-05-08	2011-05-25
25 May 2011 Chalmers quote for the research program on an emissions test procedure for heavy-duty hybrids (Chalmers and Sweden) HDH-05-09	HDH-05-09	2011-05-25
25 May 2011 Heavy-duty hybrid powertrain testing (US EPA) HDH-05-10	HDH-05-10	2011-05-25
25 May 2011 Canadian regulations to reduce GHG emissions from heavy-duty vehicles and associated hybrid vehicle testing (Canada and ECCC) HDH-05-11	HDH-05-11	2011-05-25
25 May 2011 Powerpack evaluation for HD hybrid powertrains (Cummins) HDH-05-12	HDH-05-12	2011-05-25
31 May 2011 Minutes of the 5th HDH informal group session HDH-05-13	HDH-05-13	2011-05-31
31 May 2011 Invitation to the 6th HDH Informal Group session HDH-06-01	HDH-06-01	2011-05-31
31 May 2011 Draft agenda for the 6th HDH Informal Group session HDH-06-02	HDH-06-02	2011-05-31
8 June 2011 Progress report of the HD Hybrid Emissions (HDH) Informal Group HDH-06-03	HDH-06-03	2011-06-08
8 June 2011 European 7th Framework Programme: Hybrid Commercial Vehicles Project (TNO) HDH-06-04	HDH-06-04	2011-06-08
8 June 2011 Work program for EC-funded project on an emissions test procedure for heavyduty hybrids (TRL) HDH-06-05	HDH-06-05	2011-06-08
8 June 2011 Institute for Powertrains & Automotive Engineering (IFA/TU Vienna) capabilities presentation (IFA, TU Wien, and TU Graz) HDH-06-06	HDH-06-06	2011-06-08
8 June 2011 Institute for Internal Combustion Engines and Thermodynamics (IVT/TU Graz) capabilities presentation (TU Graz, IVT, and TU Wien) HDH-06-07	HDH-06-07	2011-06-08
8 June 2011 Chalmers proposal for a research program on an emissions test procedure for heavy-duty hybrids (Chalmers) HDH-06-08	HDH-06-08	2011-06-08
8 June 2011 Status Report of the GRPE Informal Group on Heavy-Duty Hybrids GRPE-62-07	GRPE-62-07	2011-06-08
8 June 2011 Progress report of the HD Hybrid Emissions (HDH) Informal Group GRPE-62-08	GRPE-62-08	2011-06-08
19 July 2011 Invitation to the 7th HDH Informal Group session HDH-07-01	HDH-07-01	2011-07-19
2 September 2011 Minutes of the 6th HDH informal group session HDH-06-09	HDH-06-09	2011-09-02
22 September 2011 Minutes of the IFA visit to Japan within the framework of the HDH Project (IFA) HDH-07-03	HDH-07-03	2011-09-22
22 September 2011 Draft agenda for the 7th HDH Informal Group session HDH-07-02	HDH-07-02	2011-09-22
13 October 2011 HDH Research Project status report: IFA/TU Vienna (IFA and TU Wien) HDH-07-04	HDH-07-04	2011-10-13
13 October 2011 Methodology for Certifying HD Hybrids based on HILS (IVT and TU Graz) HDH-07-05	HDH-07-05	2011-10-13
13 October 2011 Emissions and CO2 Test Procedure for HD Hybrid Vehicles (Chalmers) HDH-07-06	HDH-07-06	2011-10-13
13 October 2011 Feasibility study for chassis dynamometer testing procedure for HD hybrids (India) HDH-07-07	HDH-07-07	2011-10-13
5 December 2011 Progress report of the HD Hybrid Emissions (HDH) Informal Group HDH-07-08	HDH-07-08	2011-12-05
5 December 2011 EPA Heavy‐Duty GHG Overview and Hybrid System Testing (US EPA) HDH-07-09	HDH-07-09	2011-12-05
5 December 2011 Clean Automotive Technology: HHV Component Information (US EPA) HDH-07-11	HDH-07-11	2011-12-05
5 December 2011 Japan's understanding of WHTC application for HILS in document HDH-07-05 (Japan) HDH-07-10	HDH-07-10	2011-12-05
16 December 2011 Minutes of the 7th HDH group meeting HDH-07-12	HDH-07-12	2011-12-16
19 December 2011 Invitation to the 8th meeting of the HDH informal group HDH-08-01	HDH-08-01	2011-12-19
19 December 2011 Agenda for the 8th HDH informal group meeting HDH-08-02	HDH-08-02	2011-12-19