Türkiye’de Devlet Karayollarında Kaza Oranlarının ve Kaza Örüntüsünün Analizi

Abstract

This study comprises a statistical and geographic analysis of traffic crashes on road segments of state highways in Turkey for the period of 2009 to 2013. At the geographic analysis stage, Global Moran's I value is used to measure the level of spatial concentration of crashes. Fatal and injury (FI) crashes per billion vehicle-kilometer traveled (VKT) is selected as a measure of exposure to identify state highway segments with higher crash rates. The geographic distribution of the road segments with higher rates shows a dispersed (not clustered) pattern. Researches in transportation and traffic literature showed that traffic volume is the most effective explanatory factor of traffic crashes. This research argues that many other factors may have significant influence on crash rates.