Adoption of GRPE Heavy-Duty Hybrid new annex to Global Technical Regulation n°4
Document HDH-16-03
20 December 2013

Memorandum from the US Environmental Protection Agency on the proposed addition of test procedures for heavy-duty hybrid vehicles to the global technical regulation on heavy-duty vehicle emissions and fuel consumption (WHDC) identifying “a number of open issues that are causing concern for the United States and require resolution prior to considering the Annex for adoption”.

Submitted by US EPA
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Related and Previous Documents
HDH-18-04
Relates to GTR No. 4 | Heavy-duty Hybrids (HDH) |