การบ่งชี้จุดอันตรายบนทางหลวงในประเทศไทยด้วยวิธี อัตราการเกิดอุบัติเหตุวิกฤต (Identification of Hazardous Locations on Highway in Thailand by The Critical Crash Rate Method)

Abstract

This article presents an identification of hazardous locations on highways in Thailand by Critical-Crash-Rate Method. The research gives a move reliable results since it brings traffic volume and length of road sections, with statistically significant level to be considered in determining hazardous locations which are more reliable. The research shows that the risk of traffic accidents depends on physical characteristics of roads. This research developed a program on the ArcGIS9.2 for analyzing hazardous locations of traffic accidents which can be uses efficiently. Based on using of the developed program to identify hazardous locations on highways in Thailand, it can be summarized on accident risk level ,by the type of highway ,in the order from high to low as follows : 6 lane undivided road ,4 lane undivided road, 2 lane road, more than 6 lane undivided road, more than 6 lane divided road without frontage road, 4 lane divided road without frontage road, 6 lane divided road without frontage road, more than 6 lane divided road with frontage road and 6 lane divided road with frontage road . Based on the identification and prioritization of hazardous locations on highways by the research the Department of Highway can allocate the budget to prevent traffic accidents efficiently