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Title: GEOMETRIC DESIGN AND SAFETY ASPECTS OF ROUNDABOUTS
Accession Number: 00818865
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: The findings of a 3-year study conducted at Pennsylvania State University for the Federal Highway Administration on the safety and operational performance and geometric characteristics of roundabouts are presented. The study focused on geometric characteristics that influence the safety and operational performance of roundabouts. Accident data (including driver testimonials) were reviewed along with videotapes developed at several roundabouts in Maryland, Florida, and Nevada. Several conclusions were drawn, including the need to improve geometric design on approaches to rural roundabouts to reduce loss-of-control accidents; the need for adequate right-of-way to properly deflect vehicles around the center island; and the need for guidance regarding operating-volume-to-capacity ratios. The findings from the study will assist planners, designers, and engineers in avoiding unnecessary safety hazards and operational failures.
Supplemental Notes: This paper appears in Transportation Research Record No. 1751, Geometric Design and the Effects on Traffic Operations 2001.
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Flannery, APagination: p. 76-81
Publication Date: 2001
Serial: ISBN: 0309072123
Features: Figures
(4)
; Photos
(1)
; References
(8)
; Tables
(3)
TRT Terms: Uncontrolled Terms: Subject Areas: Design; Highways; Planning and Forecasting; Safety and Human Factors; I21: Planning of Transport Infrastructure; I82: Accidents and Transport Infrastructure
Files: TRIS, TRB, ATRI
Created Date: Oct 18 2001 12:00AM
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