1. Impacts of speed variations on freeway crashes by severity and vehicle type;Choudhary;Accid. Anal. Prev.,2018
2. Policy Analysis of Multi-Actor Systems;Enserink,2010
3. European Commission, Multimodal Sustainable Transport: which role for the internalisation of external costs?, 2018, Accessed: Aug. 20, 2021. Available: https://ec.europa.eu/transport/sites/transport/files/2018-year-multimodality-external-costs-note.pdf.
4. European Commission, Speed and accident risk | Mobility and transport, https://ec.europa.eu/transport/road_safety/specialist/knowledge/speed/speed_is_a_central_issue_in_road_safety/speed_and_accident_risk_en (accessed Aug. 23, 2021).
5. European Commission, Transport in the European Union - Current Trends and Issues, Mar. 2019. Accessed: Aug. 30, 2021. [Online]. Available: https://ec.europa.eu/transport/sites/default/files/2019-transport-in-the-eu-current-trends-and-issues.pdf.