Murithi Njagi, Antony, and Forah Obebo. “Effects of Road Improvement on Road User Costs and Safety of Road Users: The Case of Outer Ring Road, Nairobi, Kenya”. The Journal of Transportation Economics 7, no. 1 (May 10, 2023). Accessed October 16, 2024. https://edithcowanjournal.org/journals/index.php/the-Journal-of-transportation-ec/article/view/66.