Comparison of identification and ranking methodologies for speed-related crash locations.

Details

• Creators:
  Monsere, Christopher M. ; Bertini, Robert L. ; Bosa, Peter G.
• Corporate Creators:
  Portland State University. Department of Civil & Environmental Engineering
• Subject/TRT Terms:
  Countermeasures Automobiles--Speed Crashes Speeding Traffic Accidents
• Publication/ Report Number:
  FHWA-OR-RD-06-14
• Resource Type:
  Tech Report
• Geographical Coverage:
  Oregon
• Corporate Publisher:
  Oregon. Dept. of Transportation
• Abstract:
  Over 60,000 crashes were reported on the Oregon state highway system from 2000–2002. Of these, speed was a primary
  
  causal factor in 27% of total crashes and 36% of all fatal crashes. Excessive speed is a driver behavior that can be
  
  influenced by a wide variety of countermeasures. However, different methods for analyzing crash data often result in
  
  setting different priorities for safety improvements. The state of Oregon currently does not have a developed
  
  methodology for prioritizing locations for review of countermeasure deployment. When making decisions about
  
  countermeasure deployment with limited resources, it is important they be allocated to locations that will result in the
  
  greatest impact. The objective of this study was to improve the procedures used to select locations for speed-related
  
  safety countermeasures. The report includes a literature review focused on the relationship between speed and crashes,
  
  as well as past research on speed reduction techniques. An analysis of speed-related crash data indicated that a number
  
  of variables such as ice, curves, and others are overrepresented in speed crashes. Based on these findings, the study then
  
  developed and compared alternate ranking methods for speed/ice crash locations, including a unique refinement of the
  
  rate quality control (RQC) method, using climate data that helps identify road segments that exhibit statistically
  
  significant high speed/ice crash patterns. The results of the method were highlighted with a case study of identified
  
  highway sections using a new zonal RQC. To demonstrate the feasibility of this analysis technique, the top 20 sites
  
  identified by the refined screening technique were reviewed for possible countermeasures.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:3b4676af13100f288effc7f28d88960f49e279c14a1e8f8ee2c83d4195938302901a94b779b4cf0dfa1b95becb754e445e0ff44c906a25ca2c2d406cbefe024d
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/21868/dot_21868_DS1.pdf
• File Type:
  [PDF - 9.48 MB ]