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Title: Developing a Framework for Evaluating and Selecting Curve Safety Treatments
Accession Number: 01592871
Record Type: Component
Abstract: Horizontal curve operations and safety are affected by various geometric characteristics, such as radius, superelevation rate, deflection angle, and cross-sectional width; and pavement characteristics like skid number. Identification and application of cost-effective safety treatments requires application of a consistent analysis framework that accounts for these variables. In this paper, a framework is presented that allows practitioners to assess the safety performance of a curve of interest using margin of safety, which is defined as the difference between side friction demand and side friction supply; and crash frequency estimates obtained from safety prediction models that account for the influence of curve geometry and pavement friction. The analysis framework is formulated as a spreadsheet program that automates the numerous required calculations, and provides the analyst with insights into whether a curve should be considered for pavement-based treatments like a high-friction surface treatment or an increase in superelevation rate.
Supplemental Notes: This paper was sponsored by TRB committee ANB25 Standing Committee on Highway Safety Performance.
Monograph Title: Monograph Accession #: 01584066
Report/Paper Numbers: 16-5801
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Pratt, Michael PGeedipally, Srinivas RPagination: 18p
Publication Date: 2016
Conference:
Transportation Research Board 95th Annual Meeting
Location:
Washington DC, United States Media Type: Web
Features: Figures; References
(17)
; Tables
TRT Terms: Subject Areas: Highways; Pavements; Safety and Human Factors
Source Data: Transportation Research Board Annual Meeting 2016 Paper #16-5801
Files: PRP, TRIS, TRB, ATRI
Created Date: Jan 12 2016 6:33PM
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