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Title: Expected Safety Performance of Rural Signalized Intersections in South Korea
Accession Number: 01123249
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: Understanding the expected safety performance of rural signalized intersections is critical for (a) identifying high-risk sites where the observed safety performance is substantially worse than the expected safety performance, (b) understanding influential factors associated with crashes, and (c) predicting the future performance of sites and helping plan safety-enhancing activities. These three critical activities are routinely conducted for safety management and planning purposes in jurisdictions throughout the United States and around the world. This paper aims to develop baseline expected safety performance functions of rural signalized intersections in South Korea, which to date have not yet been established or reported in the literature. Data are examined from numerous locations within South Korea for both three-legged and four-legged configurations. The safety effects of a host of operational and geometric variables on the safety performance of these sites are also examined. In addition, supplementary tables and graphs are developed for comparing the baseline safety performance of sites with various geometric and operational features. These graphs identify how various factors are associated with safety. The expected safety prediction tables offer advantages over regression prediction equations by allowing the safety manager to isolate specific features of the intersections and examine their impact on expected safety. The examination of the expected safety performance tables through illustrated examples highlights the need to correct for regression-to-the-mean effects, emphasizes the negative impacts of multicollinearity, shows why multivariate models do not translate well to accident modification factors, and illuminates the need to examine road safety carefully and methodically. Caveats are provided on the use of the safety performance prediction graphs developed in this paper.
Monograph Title: Monograph Accession #: 01144890
Report/Paper Numbers: 09-1758
Language: English
Authors: Oh, JutaekWashington, Simon PLee, DongminPagination: pp 72-82
Publication Date: 2009
ISBN: 9780309126281
Media Type: Print
Features: Figures
(1)
; Maps
(1)
; References
(31)
; Tables
(5)
TRT Terms: Uncontrolled Terms: Geographic Terms: Subject Areas: Design; Highways; Operations and Traffic Management; Safety and Human Factors; I82: Accidents and Transport Infrastructure
Files: TRIS, TRB, ATRI
Created Date: Jan 30 2009 6:01PM
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