Comparison of identification and ranking methodologies for speed-related crash locations.
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

For very narrow results

When looking for a specific result

Best used for discovery & interchangable words

Recommended to be used in conjunction with other fields

Dates

to

Document Data
Library
People
Clear All
Clear All

For additional assistance using the Custom Query please check out our Help Page

i

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

Filetype[PDF-9.48 MB]


Select the Download button to view the document
This document is over 5mb in size and cannot be previewed
English
Details You May Also Like

Details:

  • Creators:
  • Corporate Creators:
    Portland State University. Department of Civil & Environmental Engineering
  • Subject/TRT Terms:
  • 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):
  • Main Document Checksum:
  • Download URL:
  • File Type:

Supporting Files

  • No Additional Files
More +

You May Also Like

Checkout today's featured content at rosap.ntl.bts.gov