A new model for determining the traffic accident black spots using GIS-aided spatial statistical methods

In the present study, the data were obtained from 300 thousand traffic accidents occurred on 2408 different state roads during the years from 2005 to 2013 from the General Directorate of Highways. The state roads of Turkey were divided into 32,107 sub-segments with the length of 1 km. Based on the study results, 126 sub-segments were determined as traffic accident black spots depending on the method used. According to comparison of the methods used in the present study, the Empirical Bayesian method provided the best results in terms of accuracy and consistency.