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Experimental use of flexible guideposts in Oregon : PPM 20-6.3, Category 2 Project : final report.

File Language:
English


Details

  • Corporate Creators:
    Oregon. Dept. of Transportation. Highway Division
  • Subject/TRT Terms:
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Oregon
  • Corporate Publisher:
    Oregon. Dept. of Transportation. Highway Division
  • Abstract:
    During the early months of 1971 the Oregon State Highway Division requested and received FHWA approval to install flexible guideposts in locations where sight post losses from collisions would be expected to be high. The request was to install the flexible posts as an experimental feature under the provisions of PPM 20-6.3 as a Category 2 Project. Limited use of the posts was initiated in contracts let during the spring of 1971. When used, they were installed in exit gore areas and on interchange ramps having curvature of 11 degrees or more. Also, at flared and channelized intersections having heavy turning movements, flexible guideposts have been used to delineate the turning radii in each quadrant. In total, their use has been specified on 25 contracts during the ensuring period up to and including early 1974.
  • Format:
    PDF
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/23011/dot_23011_DS1.pdf
  • File Type:
    Filetype[PDF - 376.52 KB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha-512:98ff41ba2f9793fba34ee902f21881b13988e29f712f2176093925e1f054ae6927f1967d80d7ba697d354b92808bbe4beb6e54d195e11549b33f2ddc8841978e
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