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                Developing Crash Modification Factors for Mini-Roundabouts
FHWA-HRT-22-109.pdf (380.49 KB)
      
  Publication Information
                  Publication Type:TechBrief
                  Publication Number:FHWA-HRT-22-109
              Abstract:The objective of this study was to assess the safety effectiveness of mini-roundabout (MR) installations based on crash data and develop statistically valid Crash Modification Factors (CMFs). The research team studied CMFs of MR locations converted from both two-way stop-control (TWSC) and all-way stop-control (AWSC) and developed separate CMFs for converted MRs from both for various crash types, including total, fatal and injury (FI), property damage only (PDO), multivehicle total (MV_Total), multivehicle FI (MV_FI), and multivehicle PDO  MV_PDO). In addition, the researcher provided benefit–cost (B/C) ratios for the MR installations. Practitioners can use these CMFs and B/C ratios for decisionmaking in their project development and safety planning processes.





Recommended citation: Federal Highway Administration, Developing Crash Modification Factors for Mini-Roundabouts (Washington, DC: 2023) https://doi.org/10.21949/1521939
              Publishing Date:February 2023
              Posting Date:02/08/2023
                              Digital Object Identifier:https://doi.org/10.21949/1521939
              Author(s):Avelar,
    
          Raul 
    
          (ORCID: 0000-0002-3962-1758)
              Park,
    
          Eun Sug 
    
          (ORCID: 0000-0001-6224-7007)
              Kutela,
    
          Boniphace 
    
          (ORCID: 0000-0002-5450-1623)
              Publishing Office:Office of Safety and Operations Research and Development
                  FHWA Program(s):Research
              Safety
              AMRP Program(s):Safety
              FHWA Activities:Evaluation of Low Cost Safety Improvements Pooled Fund Study
              Subject Area:Highways U.S. DEPARTMENT OF TRANSPORTATION

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