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:
Digital Object Identifier:
https://doi.org/10.21949/1521939
Author(s):
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