Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/11292
Title: Externality of risk and crash severity at roundabouts
Authors: DANIELS, Stijn 
BRIJS, Tom 
NUYTS, Erik 
WETS, Geert 
Issue Date: 2010
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Source: ACCIDENT ANALYSIS AND PREVENTION, 42 (6). p. 1966-1973
Abstract: The severity of 1491 crashes on 148 roundabouts in Flanders-Belgium was examined in order to investigate which factors might explain the severity of crashes or injuries and to relate these factors to the existing knowledge about contributing factors for injury severity in traffic. Logistic regression and hierarchical binomial logistic regression techniques were used. A clear externality of risk appeared to be present in the sense that vulnerable road user groups (pedestrians, bicyclists, moped riders and motorcyclists) are more severely affected than others. Fatalities or serious injuries in multiple-vehicle crashes for drivers of four-wheel vehicles are much rarer. Injury severity increases with higher age. Crashes at night and crashes outside built-up areas are more severe. Single-vehicle crashes seem to have more severe outcomes than multiple-vehicle crashes. However, systematic differences in the reporting rate of crashes are likely to exist and may have affected the stated results. Correlations with important, but unobserved variables like the impact speeds in the crashes might exist as well and could provide an alternative explanation for some results. (C) 2010 Elsevier Ltd. All rights reserved.
Notes: [Daniels, Stijn; Brijs, Tom; Wets, Geert] Hasselt Univ, Transportat Res Inst, B-3590 Diepenbeek, Belgium. [Nuyts, Erik] PHL Univ Coll, Architecture Art & Design Res Inst, B-3590 Diepenbeek, Belgium. stijn.daniels@uhasselt.be; tom.brijs@uhasselt.be; erik.nuyts@phl.be; geert.wets@uhasselt.be
Keywords: Roundabout; Crash severity; Logistic regression; Multilevel; Externality;Roundabout; Crash severity; Logistic regression; Multilevel; Externality
Document URI: http://hdl.handle.net/1942/11292
ISSN: 0001-4575
e-ISSN: 1879-2057
DOI: 10.1016/j.aap.2010.06.001
ISI #: 000282240500052
Category: A1
Type: Journal Contribution
Validations: ecoom 2011
Appears in Collections:Research publications

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