Evaluation of the efficacy of an intersection conflict warning system at two-way stop-controlled rural intersections: Difference-in-differences and triple-difference analytical approaches

This article reports on a study that investigated the impact of the use of intersection conflict warning systems (ICWSs) on the incident of crashes at high-risk, two-way stop-controlled intersections in Minnesota (from 2010-2018). The authors analyzed the potential causal relations between ICWSs and various crash rate outcomes, including total number of crashes, injury, non-injury, targeted right-angle and non-right-angle crashes. The study compared data for intersections with (n = 56) and without ICWSs (n = 168), including as many comparable intersection characteristics as possible. The study showed that ICWS treatment was significantly associated with a decreasing trend for targeted right-angle crash rates. The authors discuss a number of trends in their data that did not reach statistical significance. They conclude with a discussion of potential causal associations between intersection safety countermeasures and crashes at high-risk rural two-way stop-controlled intersections.

• Record URL:
  • https://doi.org/10.1136/injuryprev-2021-044321
• Record URL:
  • https://injuryprevention.bmj.com/content/injuryprev/28/3/204.full.pdf
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/13538047
• Authors:
  • Tian, Disi
  • Gerberich, Susan G
  • Kim, Hyun
  • Ryan, Andrew D
  • Erickson, Darin J
  • Morris, Nichole L
• Publication Date: 2022-6

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 204-210
• Serial:
  • Injury Prevention
  • Volume: 28
  • Issue Number: 3
  • Publisher: BMJ Publishing Group
  • ISSN: 1353-8047
  • EISSN: 1475-5785
  • Serial URL: http://injuryprevention.bmj.com/

Subject/Index Terms

• TRT Terms: Crash rates; Rural highways; Stop signs; Traffic conflicts; Unsignalized intersections; Warning systems
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 01918553
• Record Type: Publication
• Files: TRIS
• Created Date: May 15 2024 3:27PM