Analysis of Traffic Accident Risk Factors for Human to Vehicle Accidents in Non-arterial Road Blocks Considering Accident Types

Abstract

In this study, the relationship between the accident factors of "traffic characteristics," "road characteristics", "road environment characteristics" and the risk of human-vehicle accidents was analyzed by accident type based on negative binomial regression models for human-vehicle traffic accidents on non-arterial roads in Chiba Prefecture over a four-year period. As a result, some factors that commonly affect all types of accidents and uncommon factors that have a different impact depending on accident type. Specifically, it was shown that although "un-signalized intersection density" had a positive impact on all accident types, the impact of the "roadside characteristics" factor, which expresses more area-specific activity conditions, was different by accident types. Furthermore, it was shown that the risks of walking along roadway accident and dart-out accident tended to be higher in areas with a high tendency for "central business district type factors". In contrast, the "roadside characteristics" factor was non-significant for accident risk at crosswalks.