Developing Crash Modification Factors for Mini-Roundabouts [techbrief]

Details

• Creators:
  Avelar, Raul ; Park, Eun Sug ; Kutela, Boniphace
• Corporate Creators:
  United States. Federal Highway Administration. Office of Research, Development, and Technology
• Contributors:
  Zhang, Wei
• Corporate Contributors:
  Texas A&M Transportation Institute ; United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center
• Subject/TRT Terms:
  • Crash modification factors
  • Roundabouts
  • Traffic safety
  • Traffic crashes
• Publication/ Report Number:
  FHWA-HRT-22-109
• Resource Type:
  Brief
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Federal Highway Administration. Office of Research, Development, and Technology
• 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 decision-making in their project development and safety planning processes.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/66497/dot_66497_DS1.pdf
• File Type:
  [PDF - 380.49 KB]
• Collection(s):
  Federal Highway Administration
• Main Document Checksum:
  urn:sha-512:855a6441ff918a3ed4d7d8f8226998c2e3aed99da042c6e3bf89841ebca3bb8b997111aea181a0085a5475a6c8b18775b3e2a375f341cbe907b6fa569980b5a6