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http://dx.doi.org/10.7470/jkst.2014.32.2.170

Relationship Between Accidents and Non-Homogeneous Geometrics: Main Line Sections on Interstates  

Park, Min Ho (Highway & Transportation Research Division, Korea Institute of Construction Technology)
Noh, Kwan Sub (Highway & Transportation Research Division, Korea Institute of Construction Technology)
Kim, Jongmin (Highway & Transportation Research Division, Korea Institute of Construction Technology)
Publication Information
Journal of Korean Society of Transportation / v.32, no.2, 2014 , pp. 170-178 More about this Journal
Abstract
Until now, several research on the relationship of traffic crash occurrences and geometric had been conducted and revealed that projects of road alignment, geometric improvement and hazardous segment selection reduced the number of accidents and accident severities. However, such variables did not consider the non-homogeneous characteristics of roadway segments due to the difficulty of data collection, which results in under-estimation of the standard error affecting the overall modeling goodness-of-fit. This study highlights the importance of non-homogeneity by looking at the effect of the non-homogeneous geometric variables through the modeling process. The model delivers meaningful results when using some geometric variables without relevant geometrics' variables.
Keywords
accident model; interstate; main line; negative binomial model; non-homogeneity;
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Times Cited By KSCI : 4  (Citation Analysis)
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