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Title: Working Concept of Accessibility: Performance Measures for the Usability of Crosswalks by Pedestrians with Vision Impairments
Accession Number: 01125533
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: This research presents an analysis framework and associated performance measures for quantifying the accessibility of pedestrian crossings at modern roundabouts for pedestrians who are blind. The measures, developed under two ongoing national research projects, NCHRP Project 3-78A and a bioengineering research grant from the National Institutes of Health–National Eye Institute, attempt to isolate the components of the crossing task for a blind pedestrian into computable and replicable quantities that allow the comparison of accessibility across individuals or sites. The framework differentiates between crossing opportunities in the form of yields and crossable gaps and the utilization of these opportunities by the pedestrian. It further accounts for the amount of delay and risk involved in the crossing. The analysis framework and measures are demonstrated for two single-lane roundabouts in North Carolina evaluated under the aforementioned research projects. The application shows that the accessibility of a pedestrian crossing to a blind pedestrian is characterized by a combination of different measures and further depends on crossing geometry, traffic volume, driver behavior, and the travel skills and risk-taking behavior of the individual. With successful demonstration at roundabout crosswalks, the analysis framework is hypothesized to have broader application to unsignalized pedestrian crossings, including midblock locations.
Monograph Title: Monograph Accession #: 01149182
Report/Paper Numbers: 09-1982
Language: English
Authors: Schroeder, Bastian JRouphail, Nagui MHughes, Ronald GPagination: pp 103-110
Publication Date: 2009
ISBN: 9780309142731
Media Type: Print
Features: Figures
(1)
; References
(21)
; Tables
(5)
TRT Terms: Uncontrolled Terms: Geographic Terms: Subject Areas: Highways; Operations and Traffic Management; Pedestrians and Bicyclists; Safety and Human Factors; I73: Traffic Control; I83: Accidents and the Human Factor
Files: TRIS, TRB, ATRI
Created Date: Jan 30 2009 6:17PM
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