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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/18429

Title: Crash patterns at signalized intersections
Authors: Polders, Evelien
Daniels, Stijn
Hermans, Elke
Brijs, Tom
Wets, Geert
Issue Date: 2015
Citation: TRANSPORTATION RESEARCH RECORD (2514), p. 105-116
Series/Report: Transportation Research Record: Journal of the Transportation Research Board
Series/Report no.: 2514
Abstract: Traffic signals are often implemented to provide for efficient movement and to improve traffic safety. Nevertheless, severe crashes still occur at signalized intersections. This study aims to improve the understanding of signalized intersection safety by identifying crash types, locations and factors associated with signalized intersections. For this purpose, 1295 police-reported crashes at 87 signalized intersections are analyzed based on detailed crash descriptions, i.e. crash data and collision diagrams. The information of the collision diagrams is used to distinguish six different crash types and to create a crash location typology to divide the signalized intersection into 13 detailed and different typical segments. Logistic regression modeling techniques are used to identify relations between crash types, their crash location on certain signalized intersection segments, the crash severity and the different features that affect their crash occurrence. Four dominant crash types are identified: rear-end, side (i.e. left-turn + right-angle), head-on and VRU crashes. The results of the logistic regression models showed that the crash location of these crash types is related to specific signalized intersection segments. The results also reveal important signalized intersection features that affect the crash occurrence. As a result, connections between certain signalized intersection crash types, their crash location and signalized intersection design characteristics have been found. The combination of intersection features with detailed signalized intersection segments provides valuable insights in the nature of signalized intersection crashes and the safety impact of signalized intersection design.
Notes: Wets, G (reprint author), Hasselt Univ, IMOB, Transportat Res Inst, Wetenschapspk 5-6, B-3590 Diepenbeek, Belgium. geert.wets@uhasselt.be
URI: http://hdl.handle.net/1942/18429
DOI: 10.3141/2514-12
ISI #: 000368755900012
ISSN: 0361-1981
Category: A1
Type: Journal Contribution
Validation: ecoom, 2017
Appears in Collections: Research publications

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