1. 3DATX, 2018. http://www.3datx.com/, 3-dimensional data analysis (3DATX) Corporation.
2. Driver behavior at Kuwait roundabouts and its performance evaluation;AlKheder;IATSS Research,2020
3. Drivers' behaviour at roundabouts in Riyadh;Al-Saleh;Int. J. Inj. Contr. Saf. Promot.,2012
4. Anya, A.R., Rouphail, N.M., Frey, H.C., Liu, B., 2013. Method and Case Study for Quantifying Local Emissions Impacts of Transportation Improvement Project Involving Road Realignment and Conversion to Multilane Roundabout, Transportation Research Board 92nd Annual Meeting, Jan 13-17 Washington, DC, United States.
5. Long-term concentrations of nitrogen dioxide and mortality: A meta-analysis of cohort studies;Atkinson;Epidemiology,2018