SELECTION OF MEDIAN TREATMENTS FOR EXISTING ARTERIAL HIGHWAYS

Median treatments are an important means of reducing accidents and delay on urban areterial highways. Five common median treatments are (a) two-way left-turn lane, (b) continuous left-turn lane, (c) alternating left-turn lane, (d) raised median divider with left-turn deceleration lanes, and (e) median barrier with no direct left-turn access. A benefit-cost comparison of these treatments that considers the accident reduction, delay reduction, and construction cost for median treatments installed in existing arterial highways is reported. The analysis is based on a literature review and reasonable assumptions regarding the effectiveness of the median treatments. The result of the benefit-cost analysis is a selection guide that can be used by a designer to determine the optimal median treatment for an arterial highway based on geometric and operational conditions. /Author/

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1978/681/681-014.pdf
• Record URL:
  • https://scholar.google.com/scholar_lookup?title=SELECTION+OF+MEDIAN+TREATMENTS+FOR+EXISTING+ARTERIAL+HIGHWAYS&author=D.+Harwood&author=J.+Glennon&publication_year=1978
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309028264
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Operational Effects of Geometrics. 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:
  • Harwood, Douglas W
  • Glennon, John C
• Conference:
  • 57th Annual Meeting of the Transportation Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1978-1-16 to 1978-1-20
• Publication Date: 1978

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 70-77
• Monograph Title: Traffic control devices, visibility and geometrics
• Serial:
  • Transportation Research Record
  • Issue Number: 681
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Benefit cost analysis; Left turn lanes; Median barriers; Road markings; Traffic lanes
• Old TRIS Terms: Left lane; Traffic marking
• Subject Areas: Design; Environment; Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00196642
• Record Type: Publication
• ISBN: 0309028264
• Files: TRIS, TRB
• Created Date: Sep 15 1979 12:00AM