Toolbox of countermeasures for rural two-lane curves.

Details

• Creators:
  Hallmark, Shauna ; Hawkins, Neal ; Smadi, Omar
• Corporate Creators:
  Iowa State University. Center for Transportation Research and Education
• Corporate Contributors:
  Midwest Transportation Consortium
• Subject/TRT Terms:
  • Two lane highways
  • Highway curves
  • Rural highways
  • Ran off road crashes
  • Countermeasures
  • Highway safety
  • Paved shoulders
  • Single vehicle crashes
  • Surface treating
  • Traffic control devices
• Publication/ Report Number:
  IHRB Project TR-579
• Resource Type:
  Tech Report
• Geographical Coverage:
  Iowa
• Corporate Publisher:
  Iowa State University. Institute for Transportation
• Abstract:
  The Federal Highway Administration (FHWA) estimates that 58 percent of roadway fatalities are lane departures, while 40 ; percent of fatalities are single-vehicle run-off-road (SVROR) crashes. Addressing lane-departure crashes is therefore a ; priority for national, state, and local roadway agencies. Horizontal curves are of particular interest because they have been ; correlated with increased crash occurrence. ; This toolbox was developed to assist agencies address crashes at rural curves. The main objective of this toolbox is to ; summarize the effectiveness of various known curve countermeasures. ; While education, enforcement, and policy countermeasures should also be considered, they were not included given the ; toolbox focuses on roadway-based countermeasures. Furthermore, the toolbox is geared toward rural two-lane curves. ; The research team identified countermeasures based on their own research, through a survey of the literature, and through ; discussions with other professionals. Coverage of curve countermeasures in this toolbox is not necessarily comprehensive. ; For each countermeasure covered, this toolbox includes the following information: description, application, effectiveness, ; advantages, and disadvantages.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26672/dot_26672_DS1.pdf
• File Type:
  [PDF - 3.99 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:65f853c816b8316f3b0448e6884c9c97d99d460f39cf7f3de1ee046db96407afc93ea39e3945ead09536329aceb95674f310d1528f25b000402ab0e8ecd5082b