ASPECTS OF SPIRAL TRANSITION CURVE DESIGN

Some aspects of the design of spiral transition curves on highways are discussed, and a model for the relation between the design speed and the rate of change of centrifugal acceleration is presented. The model is based on the principle that higher speeds require higher comfort. An identity between the spiral length given by the model and the length of the superelevation runoff is assumed. A modified criterion for the maximum relative slope of the centerline and the edges of a two-lane pavement is proposed. The values for the rate of change of centrifugal acceleration and the maximum relative slope suggested are shown to be reasonable. /Author/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1977/631/631-001.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=ASPECTS+OF+SPIRAL+TRANSITION+CURVE+DESIGN&author=J.+Craus&author=A.+Polus&publication_year=1977
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309026563
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Geometric Design. 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:
  • Craus, Joseph
  • Polus, Abishai
• Publication Date: 1977

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 1-4
• Monograph Title: Geometrics, water treatment, utility practices, safety appurtenances, and outdoor advertisement
• Serial:
  • Transportation Research Record
  • Issue Number: 631
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Centrifugal force; Design speed; Highway curves; Highway design; Mathematical models; Runoff; Superelevation; Transition curves; Two lane highways
• Uncontrolled Terms: Models
• Subject Areas: Design; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00172409
• Record Type: Publication
• ISBN: 0309026563
• Files: TRIS, TRB
• Created Date: Apr 12 1978 12:00AM