CMF / CRF Details

CMF ID: 11149

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: 3 Stars   [View score details]
Rating Points Total: 75
Crash Modification Factor (CMF)
Value: 0.465
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Value: 53.5   (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:
Applicability
Crash Type: All
Crash Severity: K (fatal),A (serious injury),B (minor injury),C (possible injury)
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: