A Comparative Evaluation of the Effects of Categorical Factors on the Safety of Multilane Interstate Highways
Journal Title: IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) - Year 2018, Vol 15, Issue 4
Abstract
This article reports the results of comparative analysis of the significance of categorical factors with two to five levels influencing safety on interstate highways. The study used the Highway Safety Information System (HSIS) accident data observed on interstate highways in the State of Ohio for the five years period ranging from 2010-2014. The analysis considered about thirteen potential variablesincluding roadway design elements, environmental conditions, drivers’ demographic factors, time of the day, and day of the week. The results suggest that among the variables considered, only about half of the factors appeared to have significant differences in crash rates across their respective categories. The identified explanatory variables are mainly associated with highway design elements such as median type, number of lanes, access control and contour of the roadway; and the drivers’ age and gender.
Authors and Affiliations
Aschalew Kassu, Mahbub Hasan, Redahegn Sileshi
Keywords
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- EP ID EP438417
- DOI 10.9790/1684-1504025662.
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