IDEAS home Printed from https://ideas.repec.org/a/eee/transb/v37y2003i5p485-499.html
   My bibliography  Save this article

The exact clear zone envelope for piecewise-linear alignment data

Author

Listed:
  • Lovell, David J.
  • Iida, Tomohisa

Abstract

This paper demonstrates how to construct the boundary of the clear zone adjacent to a roadway alignment, based only on horizontal sight distance considerations, when the alignment data are piecewise-linear on a fine lattice. In this case, it is shown that the clear zone envelope is piecewise-quadratic, and an efficient algorithm is given for constructing the parameters of each of the pieces of this curve. Special algorithm considerations are included, such as how to deal with overlapping and underlapping quadratic segments, as well as an efficient sort algorithm provided to initialize problem data properly.

Suggested Citation

  • Lovell, David J. & Iida, Tomohisa, 2003. "The exact clear zone envelope for piecewise-linear alignment data," Transportation Research Part B: Methodological, Elsevier, vol. 37(5), pages 485-499, June.
  • Handle: RePEc:eee:transb:v:37:y:2003:i:5:p:485-499
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0191-2615(02)00029-2
    Download Restriction: Full text for ScienceDirect subscribers only
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Lovell, David J. & Jong, Jyh-Cherng & Chang, Peter C., 2001. "Clear zone requirements based on horizontal sight distance considerations," Transportation Research Part A: Policy and Practice, Elsevier, vol. 35(5), pages 391-411, June.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Iida, Tomohisa & Lovell, David J., 2007. "Convergence of piecewise-linear envelope curves in transportation design," Transportation Research Part B: Methodological, Elsevier, vol. 41(5), pages 527-539, June.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:transb:v:37:y:2003:i:5:p:485-499. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.elsevier.com/wps/find/journaldescription.cws_home/548/description#description .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.