AN ANALYSIS OF TRAFFIC ACCIDENT INFLUENCED BY SUN GLARE

Abstract

It is said that road traffic was influenced badly by sun glare, so many traffic safety countermeasures for sun glare had been carried out. To verify bad influence by sun glare and carry out effective traffic safety countermeasures, it is important to quantify the influence by sun glare. But thses kinds of traffic accidents analysis bad been carried out only on a few streets or spots, so traffic accident analysis influenced by sun glare had never carried out on large areas. In this study, utilizing traffic accident data in Chiba prefecture that include latitude and longitude of accident spots and moving direction of traffic accident concerns, relative position of sun and moving direction of traffic accident concerns are calculated. And the influence by sun glare was analyzed. As a result, when the sun is located on near front of traffic accident concerns, traffic accidents had occurred more. So it was proved that road traffic was influenced badly by sun glare.