Amendment proposal to add test procedures for heavy-duty hybrid vehicles to the global technical regulation on eavy-duty road vehicle emissions (WHDC).

Report of the working group developing emissions and fuel economy test procedures for heavy-duty hybrid vehicles to the 68th session of the Working Party on Pollution and Energy.

Proposal to extend the mandate of the informal working group on heavy-duty hybrids to allow for the adaptation of the hybrid provisions developed for GTR No. 4 (WHDC heavy-duty emissions test cycle) to GTR No. 11 (Non-road vehicle emissions).