CMF / CRF Details

CMF ID: 11175

Conversion of intersection to roundabout

Description: Conversion of stop- and signal-controlled intersections into roundabouts

Prior Condition:  traditional intersection

Category: Intersection geometry

Study: Safety and Economic Evaluation of the Highway Safety Improvement Program: Is there a Return on Investment?, Boris Claros, Erynn Schroeder, Kentin Brummett, Madhav Chitturi, Andrea Bill, and David A. Noyce, 2022

 
Star Quality Rating:2 Stars  [View score details]
Rating Points Total:55
Crash Modification Factor (CMF)
Value:1.307
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Value:-30.7  (This value indicates an increase in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:
Applicability
Crash Type:All
Crash Severity:O (property damage only)
Roadway Types:Not specified
Street Type:Not Specified
Minimum Number of Lanes:
Maximum Number of Lanes:
Number of Lanes Direction:
Number of Lanes Comment:
Crash Weather:Not specified
Road Division Type:
Minimum Speed Limit:
Maximum Speed Limit:
Speed Unit:
Speed Limit Comment:
Area Type:Not specified
Traffic Volume:
Average Traffic Volume:
Time of Day:Not specified
If countermeasure is intersection-based
Intersection Type:Not specified
Intersection Geometry:Not specified
Traffic Control:Not specified
Major Road Traffic Volume:
Minor Road Traffic Volume:
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used:
Municipality:
State:WI
Country:
Type of Methodology Used:
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Aug 25, 2022
Comments: