Hadji Hosseinlou, M., Mahdavi, A. and Alinezhad, M. (2018) “Optimization of the Allowable Speed on Iran’s Freeways to Reduce Violations and Accidents, Using Zero-Truncated Poisson Regression Model”, Civil Engineering Journal, 4(2), pp. 443–449. doi: 10.28991/cej-0309104.