The regulation applies for emission limitation procedures of new vehicle type M, N, and O (4 wheels or above, gasoline, diesel, and LGV cars) and motorcycle type L.
The fuels reference which is being used for testing is is complied with The Economic Comission for Europe (ECE). IEA/IRENA Global Renewable Energy Policies and Measures Database © OECD/IEA and IRENA, [November 2020]