H. Albayati , Amjad, and Zahraa A. Ramadan. “The Effects of Speed and Flow Characteristics on Crash Rates for Wasit Multi-Lane Highways in Iraq”. Wasit Journal of Engineering Sciences, vol. 9, no. 1, Apr. 2021, pp. 22-36, https://doi.org/10.31185/ejuow.Vol9.Iss1.224.