Evaluation of safety treatments for roadside culverts.

Details

• Creators:
  Albuquerque, Francisco Daniel B. ; Sicking, Dean L. ; Lechtenberg, Karla A.
• Corporate Creators:
  Midwest Roadside Safety Facility
• Corporate Contributors:
  Iowa. Highway Research Board ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Culverts
  • Highway safety
  • Benefit cost analysis
  • Roadside
  • Highway safety
  • Culverts
  • Benefit-cost analysis
  • Roadside safety analysis program
• Publication/ Report Number:
  TRP-03-201-09 ; IHRB TR-517
• Resource Type:
  Tech Report
• Geographical Coverage:
  Nebraska
• Edition:
  Final report; 2004-2009.
• Corporate Publisher:
  Midwest Roadside Safety Facility
• Abstract:
  Roadside cross-drainage culverts have been found to impact vehicle accident injury levels. ; Designers have commonly used three safety treatments to protect errant drivers from culvert accidents. ; These treatments have included: culvert extension, guardrail installation and grating. In order to define ; which safety treatment is the most appropriate, benefit-cost analysis has used accident cost reduction to ; estimate societal gains earned by using any safety treatment. ; The purpose of this study was to estimate accident costs for a wide range of roadway and roadside ; characteristics so that designers can calculate benefit/cost ratios for culvert safety treatment options under ; any particular scenario. ; This study began with conducting a parametric study in order to find variables which have ; significant impact on accident cost changes. The study proceeded with highway scenario modeling which ; included scenarios with different values for combinations of roadway and roadside variables. These ; variables were chosen based upon findings from the parametric study and their values were assigned based ; upon highway classification. This study shows that the use of different culvert safety treatments should be ; flexible to roadway and roadside characteristics. It also shows that culvert extension and grating were the ; safety treatments found to produce the lowest accident costs for all highway scenarios modeled. Therefore, ; it is believed that the expanded adoption of culvert extension and culvert grates can improve overall ; highway safety.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24113/dot_24113_DS1.pdf
• File Type:
  [PDF - 8.53 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:4b7065818284f81095690dbe73c71f8de21d4122899ca4106221abc2932db63a206d738f6b05df1e0fc26578b1a177f353d8f8fe4fe7eda8a4d71a023510cd17