1. European Commission, Communication from the Commission The European Green Deal, 2019.
2. European Environment Agency, Carbon dioxide emissions from Europe’s heavy-duty vehicles, 2018.
3. European Commission, Impact assessment accompanying the document Proposal for a Regulation of the European Parliament and of the Council setting CO2 emission performance standards for new heavy duty vehicles, 2018.
4. Regulation (EU) 2019/1242 of the European Parliament and of the Council of 20 June 2019 setting CO2 emission performance standards for new heavy-duty vehicles and amending Regulations (EC) No 595/2009 and (EU) 2018/956 of the European Parliament and of the Council and Council Directive 96/53/EC, 2019.
5. US Environmental Protection Agency, Final Rule for Greenhouse Gas Emissions and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles - Phase 2, 2016.