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A comprehensive study on pavement edge line implementation : [tech summary].

File Language:
English


Details

  • Creators:
    Sun, Xiaoduan ORCID ICON IMG
  • Corporate Creators:
    Louisiana Transportation Research Center
  • Subject/TRT Terms:
  • Publication/ Report Number:
    LTRC Report 508
  • Resource Type:
    Brief
  • Geographical Coverage:
    Louisiana
  • Corporate Publisher:
    Louisiana Transportation Research Center
  • Abstract:
    Reducing the number of run-off -road (ROR) crashes is a top priority for rural two-lane highways, particularly narrow, rural two-lane

    highways. Previous research conducted by the Louisiana Transportation Research Center has concluded that placing edge lines on

    narrow rural two-lane highways centralizes vehicular lateral position, which should help reduce the number of crashes. This project

    uses the latest safety analysis method introduced by the fi rst edition of Highway Safety Manual (HSM) to estimate the safety benefi ts

    of edge line on narrow, rural two-lane highways. The crash data from three years before and after edge line implementation were used

    to develop a crash modifi cation factor.

    The crash modifi cation factors (CMFs) for placing standard edge line markings on rural two-lane highways (without mentioning the

    width of pavement) is given by the fi rst edition of HSM. However, the range of the CMF (0.09, 1.10) does not indicate a positive impact

    with certainty. The current Manual on Uniform Traffi c Control Devices (MUTCD) does not require implementing edge lines on narrow,

    rural two-lane highways with average annual daily traffi c volume (AADT) less than 6,000. The AADT on all narrow, rural two-lane

    highways in the state is less than 6,000. Thus, a comprehensive study on edge line is needed in Louisiana.

  • Format:
    PDF
  • Funding:
    State Project No. 30000730;LTRC Project No. 13-2P
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:38fd0d5b94c142f025bfdf89e5fde258044d4b3f16aea21a9581a9fc41fb322f59a60f53d67a1e74d4af5c638898ade115d5175f585bfe0124f2ffc7cdb70c28
  • Download URL:
  • File Type:
    Filetype[PDF - 137.44 KB ]
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