EVALUATION OF WIDE EDGELINES ON TWO-LANE RURAL ROADS (WITH DISCUSSIONS AND CLOSURE)

The effect of 8-in.-wide edgelines on the incidence of run-off-the-road (ROR) and related accidents was evaluated. The treatment locations consisted of three two-lane rural road sections totaling 60.7 miles. A before-and-after design with a comparison group and a check for comparability was used to analyze data. Five years of accident data, covering the 3 years before wide edgeline installation and the 2 years after installation, were used. It was concluded that there is no evidence to indicate that wide edgelines significantly affected the incidence of ROR and related accidents for any individual treatment location or for the locations combined. The related accidents include ROR accidents that involved driving under the influence of alcohol or drugs, ROR accidents on curves, ROR accidents during darkness, and opposite-direction accidents.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1988/1160/1160-005.pdf
• Record URL:
  • https://scholar.google.com/scholar_lookup?title=EVALUATION+OF+WIDE+EDGELINES+ON+TWO-LANE+RURAL+ROADS+(WITH+DISCUSSIONS+AND+CLOSURE)&author=B.+Cottrell+Jr&publication_year=1988
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• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1160, Traffic Control Devices 1988. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Cottrell Jr, Benjamin H
• Discussers:
  • Deacon, John A
  • Pendleton, Olga J
• Publication Date: 1988

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 35-44
• Monograph Title: Traffic control devices 1988
• Serial:
  • Transportation Research Record
  • Issue Number: 1160
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Before and after studies; Edge lines; Performance evaluations; Ran off road crashes; Rural highways; Two lane highways; Width
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00478094
• Record Type: Publication
• ISBN: 030904670x
• Files: TRIS, TRB
• Created Date: Dec 31 1988 12:00AM