1. World Health Organization “Road Traffic Deaths. Data by Country.” Updated 2020. https://apps.who.int/gho/data/node.main.A997. Accessed February 2021.
2. Roadside Design Guide;AASHTO,2011
3. Federal Highway Administration and John A. Volpe National Transportation Systems Center (2010). “Carbon Sequestration Pilot Program: Estimated Land Available for Carbon Sequestration in the National Highway System.” Available at https://rosap.ntl.bts.gov/view/dot/8692 [Verified 15 November 2020].
4. Ament, R., & Begley, J. (2014). Roadside Vegetation and Soils on Federal Lands – Evaluation of the Potential for Increasing Carbon Capture and Storage and Decreasing Carbon Emissions. Vancouver, WA: Federal Highway Administration, Office of Federal Lands.
5. A study of factors affecting highway accident rates using the random-parameters tobit model;Anastasoploulos;Accident Analysis and Prevention,2012