Road traffic accidents severity factors: A review paper

The deaths and injuries from traffic accidents are now the world phenomenon. Many countries all over the world, including in Thailand greatly concern about the growth of mortality and injury rate on the road. In 2016, there were 10,576 Thai people deaths as a result of road traffic accidents [16]. Moreover, World Health Organization (WHO) stated in 2016 that there were 20 to 50 million people suffered non-fatal injuries [19]. Understanding the factors affecting road traffic accident is an important area for a road safety research. The aim of this paper is to present the overview of factors influencing the road traffic accident severity and also reviews the techniques that frequently used in previous studies such as logistic regression, power model, and etc. From the review of literature, the mostly mentioned factors that are found to be significant to road traffic accident severity are speed of vehicle traveled, followed by human characteristics. Other factors that are found to be significant are vehicle types, weather, alcohol consumption, driver's fatigue, and etc.