IEA (2021), Heavy-duty vehicle sales in countries with adopted fuel economy (and/or GHG/CO2) standards, 2005-2020, IEA, Paris https://www.iea.org/data-and-statistics/charts/heavy-duty-vehicle-sales-in-countries-with-adopted-fuel-economy-and-or-ghg-co2-standards-2005-2020, Licence: CC BY 4.0