RT null T1 Stabilizing greenhouse gas emissions from road transport trough doubling of global vehicle fuel economy: regional implementation of the global initiative for fuel economy(Global Fuel Economy Initiative – GEFI) Agenda A1 United Nations Environment Programme, YR 2016 FD 2016-12 LK https://wedocs.unep.org/handle/20.500.11822/16855 UL https://wedocs.unep.org/handle/20.500.11822/16855 NO https://www.unep.org/transport/gfei DS UN Environment Document Repository RD Sep 16, 2026