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http://dx.doi.org/10.12815/kits.2020.19.2.18

Effects of Road Networks on Vehicle-Pedestrian Crashes in Seoul  

Park, Sehyun (Dept. of Transportation System Research, Seoul Institute)
Kho, Seoung-Young (Dept. of Civil and Environmental Eng., Seoul National University)
Kim, Dong-Kyu (Dept. of Civil and Environmental Eng., Seoul National University)
Park, Ho-Chul (Dept. of Transportation Eng., Myongji University)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.19, no.2, 2020 , pp. 18-35 More about this Journal
Abstract
Many human, roadway, and vehicle factors affect vehicle-pedestrian crashes. Especially, the roadway factors are easily defined and suitable for suggesting countermeasures. The characteristics of the road network are one of the roadway factors. The road network significantly influences behaviors and conflicts of drivers and pedestrians. A metropolitan city such as Seoul contains various types of road networks, and crash prevention strategy considering characteristics of the road network is required. In this study, we analyze the effects of road networks on vehicle-pedestrian crashes. In the study, high order road ratio, intersection ratio, high-low intersection ratio are considered as road network variables. Using Geographically Weighted Poisson Regression, crash frequencies in Dongs of Seoul are analyzed based on the road network variable as well as socioeconomic variables. As a result, Dongs are grouped by coefficient signs, and each group is suggested about improvement directions considering conflict situations.
Keywords
Pedestrian crash; Traffic accident; Road network; Geographically Weighted Poisson Regression(GWPR);
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