Calculating the Value of Arterial Safety Improvements: Before and After Study Shows Safety Improvements Reduced Crashes by 40 Percent

A before and after crash analysis was conducted to better understand the return on investment of the safety improvements constructed along one of Sandy City, Utah’s major arterial roadways. The findings showed that the addition of raised medians, median barriers, right-turn lanes, street lighting, pedestrian access ramps, signs with improved retroreflectivity, bicycle lanes with bicycle safe catch basin grates, and more visible signals, among other improvements, reduced the severity and number of crashes by 40 percent per year along the 5-mile corridor. This article describes conditions prior to the safety improvements, the safety improvements themselves, and the data analysis conducted before and after construction.

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  • Supplemental Notes:
    • Abstract reprinted with permission from the Institute of Transportation Engineers.
  • Authors:
    • Kump, Ryan
    • Nuesmeyer, Ryan
    • Harris, Kelly
    • Hanks, Kelly
  • Publication Date: 2016-4


  • English

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Filing Info

  • Accession Number: 01598048
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 18 2016 5:11PM