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Development of an improved method for determining advisory speeds on horizontal curves.

File Language:
English


Details

  • Creators:
    Green, Eric R. ; Agent, Kenneth R. ; Lammers, Erin
  • Corporate Creators:
    University of Kentucky Transportation Center
  • Corporate Contributors:
    Kentucky. Transportation Cabinet
  • Subject/TRT Terms:
  • Publication/ Report Number:
    KTC-16-14/SPR15-507-1F
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Kentucky
  • Corporate Publisher:
    University of Kentucky Transportation Center
  • Abstract:
    Horizontal curves are an integral part of the highway alignment. However, a disproportionately high number of severe ; crashes occur on them. One method transportation agencies use to reduce the number crashes at horizontal curves is the ; installation of curve warning signs which post an appropriate advisory speed. Appropriate curve advisory speeds can be ; determined using several methods. Some of these methods are time-consuming to perform and are error-prone. The ; purpose of this research was to find the most efficient and accurate data collection method for determining curve advisory ; speeds. Several processes were developed and tested. They were then validated against the results of a manual process ; referred to as the Direct Method and other traditional methods (such as the ball-bank indicator), which are generally ; assumed to produce accurate results. Comparing the results of these methods allow researchers evaluate their accuracy ; and usefulness for setting advisory speeds. The results illustrate the potential of a more user-friendly methodology that ; allows for efficient and accurate data collection. The advisory speeds determined by this research will assist the Kentucky ; Transportation Cabinet to properly sign horizontal curves. Previous research suggests that posting appropriate advisory ; speeds results in a safer driving experience.
  • Format:
    PDF
  • Funding:
    SPR15-507
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/31954/dot_31954_DS1.pdf
  • File Type:
    Filetype[PDF - 1.44 MB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha256:3670f60cb57e99c7104c504038d819ff0e96014f26dc4f7822f9787f06da475c
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