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Title: EMPIRICAL BAYES PROCEDURE FOR RANKING SITES FOR SAFETY INVESTIGATION BY POTENTIAL FOR SAFETY IMPROVEMENT
Accession Number: 00771206
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: The identification of sites requiring investigation for possible safety treatment is one of the most important aspects of infrastructure safety management and has been the subject of considerable research aimed at improving the efficiency of the process. The more recent techniques use the empirical Bayes (EB) method for estimating the safety of specific sites. A refinement of the EB method that is conceptually sound and inherently simple to apply is the focus of this research. With this refinement, the EB estimate of the safety of a site is compared with its expected safety to determine the potential for safety improvement, which forms the basis for ranking sites for safety investigation. A comparative evaluation is provided of the proposed method against other EB methods and the more conventional ones, with data for signalized intersections and two-lane rural highway sections. The refined EB method is shown to be comparatively efficient.
Supplemental Notes: This paper appears in Transportation Research Record No. 1665, Statistical Methods in Transportation and Safety Data Analysis for Highway Geometry, Design, and Operations.
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Persaud, BLyon, CNguyen, TPagination: p. 7-12
Publication Date: 1999
Serial: ISBN: 0309070651
Features: Figures
(2)
; References
(10)
; Tables
(2)
TRT Terms: Subject Areas: Design; Highways; Safety and Human Factors; I82: Accidents and Transport Infrastructure
Files: TRIS, TRB, ATRI
Created Date: Oct 21 1999 12:00AM
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