Factors Affecting Accident Severity Inside and Outside Urban Areas in Greece

Theofilatos, A; Graham, D; Yannis, G

dc.contributor.author	Theofilatos, A	en
dc.contributor.author	Graham, D	en
dc.contributor.author	Yannis, G	en
dc.date.accessioned	2014-03-01T02:09:00Z
dc.date.available	2014-03-01T02:09:00Z
dc.date.issued	2012	en
dc.identifier.issn	15389588	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29769
dc.subject	Accident severity	en
dc.subject	Diagnostic tests	en
dc.subject	Logistic regression	en
dc.subject	Odds and probability ratios	en
dc.title	Factors Affecting Accident Severity Inside and Outside Urban Areas in Greece	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/15389588.2012.661110	en
heal.identifier.secondary	http://dx.doi.org/10.1080/15389588.2012.661110	en
heal.publicationDate	2012	en
heal.abstract	Objectives: This research aims to identify and analyze the factors affecting accident severity through a macroscopic analysis, with a focus on the comparison between inside and outside urban areas. Disaggregate road accident data for Greece for the year 2008 were used.Methods: Two models were developed, one for inside and one for outside urban areas. Because the dependent variable had 2 categories, killed/severely injured (KSI) and slightly injured (SI), the binary logistic regression analysis was selected. Furthermore, this research aims to estimate the probability of fatality/severe injury versus slight injury as well as to calculate the odds ratios (relative probabilities) for various road accident configurations. The Hosmer and Lemeshow statistic and other diagnostic tests were conducted in order to assess the goodness-of-fit of the model.Results: From the application of the models, it appears that inside urban areas 3 types of collisions (sideswipe, rear-end, with fixed object/parked car), as well as involvement of motorcycles, bicycles, buses, 2 age groups (18-30 and older than 60 years old), time of accident, and location of the accident, seem to affect accident severity. Outside urban areas, 4 types of collisions (head-on, rear-end, side, sideswipe), weather conditions, time of accident, one age group (older than 60 years old), and involvement of motorcycles and buses were found to be significant.Conclusions: Factors affecting road accident severity only inside urban areas include young driver age, bicycles, intersections, and collision with fixed objects, whereas factors affecting severity only outside urban areas are weather conditions and head-on and side collisions, demonstrating the particular road users and traffic situations that should be focused on for road safety interventions for the 2 different types of networks (inside and outside urban areas). The methodology and the results of this research may provide a promising tool to prioritize programs and measures to improve road safety in Greece and worldwide. © 2012 Copyright Taylor and Francis Group, LLC.	en
heal.journalName	Traffic Injury Prevention	en
dc.identifier.doi	10.1080/15389588.2012.661110	en
dc.identifier.volume	13	en
dc.identifier.issue	5	en
dc.identifier.spage	458	en
dc.identifier.epage	467	en