Evaluation Of The Relationship Between Near Misses And Crash Outcomes At Intersections In Oregon

Over 44,000 crashes occurred on Oregon roads in 2022, 41% of which were at intersections, according to data from Oregon Department of Transportation's (ODOT’s) Crash Analysis and Reporting Unit data. Intersections are also discrete locations where design improvements can reduce crash rates while minimizing costs, when supported by relevant data. Crash analysis is a useful tool for characterizing the safety of a system, then refining the system’s design. However, assessing the safety of novel transportation designs or existing facilities using real crash data may not be feasible because of the long observational periods and low numbers of crashes, typically at least three years of before and after data, required to acquire statistically significant quantities of data. Significant advances have been made in the ability to characterize transportation system safety with tools such as the Highway Safety Manual (HSM) predictive methods, however these tools require that crash modification factors (CMFs) have been produced for the infrastructure treatments in question, and for those models to have been calibrated to local conditions.

Language

• English

Project

• Status: Active
• Contract Numbers:

  SPR 888

• Sponsor Organizations:

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Managing Organizations:

  Oregon Department of Transportation

  355 Capital St NE MS42
  Salem, Oregon  United States  97301
• Project Managers:

  Griffin, Greg

• Performing Organizations:

  Oregon State University, Corvallis

  101 Kearney Hall
  Corvallis, OR  United States  97331
• Principal Investigators:

  Hurwitz, David

• Start Date: 20250201
• Expected Completion Date: 20260930
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Crash rates; Highway design; Intersections; Near crashes
• Geographic Terms: Oregon
• Subject Areas: Design; Highways; Operations and Traffic Management; Planning and Forecasting; Safety and Human Factors;

Filing Info

• Accession Number: 01964261
• Record Type: Research project
• Source Agency: Oregon Department of Transportation
• Contract Numbers: SPR 888
• Files: RIP, STATEDOT
• Created Date: Aug 28 2025 6:18PM