In the globe, accidents cause ten thousand people’s death and even more injuries every year. This study has been done by collecting and analyzing the data which consists three years (2015, 2016 and 2017) provided by Istanbul Police Department. Along with the examination of the data based on these three years (2015, 2016 and 2017), computer and satellite aided observations and field investigations were also made. Thus, it has been tried to determine the density distribution of the accidents in the regions, to determine the causes of the accidents and to offer solutions for these reasons.