1. Federal Office of Statistics, Road transport: Eu-wide carbon dioxide emissions have increased by 24% since 1990, 2023.
2. European Union, Verordnung (eu) 2019/1242 des europäischen parlaments und des rates, Amtsblatt der Europäischen Union(2019).
3. European Commission, Proposal for a regulation of the european parliament and of the council amending regulation(eu) 2019/1242 as regard strengthening the co2 emission performance standards for new heavy-duty vehicles and integrating reporting obligations, and repealing regulation (eu) 2018/956(2023).
4. Going climate-neutral by 2050 : a strategic long-term vision for a prosperous, modern, competitive and climate-neutral EU economy;European Commission,2019
5. Metroplan, Nachhaltigkeit in der logistik 2022: Der leitfaden für nachhaltige auswahlentscheidungen im einkauf(2022).