Al-Shammari, N. K., and S. M. H. Darwish. “In-Depth Sampling Study of Charactersitics of Vehcile Crashes in Saudi Arabia”. Engineering, Technology & Applied Science Research 9, no. 5 (October 9, 2019): 4724–4728. Accessed January 17, 2022. https://etasr.com/index.php/ETASR/article/view/2939.