CMF / CRF Details

CMF ID: 7867

Conversion of stop-controlled intersection to roundabout

Description: Conversion of stop-controlled intersection to roundabout

Prior Condition:  Intersections with stop-controlled minor roads

Category: Intersection geometry

Study: Validation and Application of Highway Safety Manual (Part D) in Florida, Abdel-Aty et al., 2014

 
Star Quality Rating:3 Stars  [View score details]
Rating Points Total:105
Crash Modification Factor (CMF)
Value:0.38
Adjusted Standard Error:
Unadjusted Standard Error:0.11
Crash Reduction Factor (CRF)
Value:62  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:11
Applicability
Crash Type:All
Crash Severity:All
Roadway Types:Not specified
Street Type:
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:All
If countermeasure is intersection-based
Intersection Type:
Intersection Geometry:
Traffic Control:
Major Road Traffic Volume:Minimum of 258 to Maximum of 60000 Annual Average Daily Traffic (AADT)
Minor Road Traffic Volume:Minimum of 258 to Maximum of 60000 Annual Average Daily Traffic (AADT)
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used:2008 to 2012
Municipality:
State:FL
Country:USA
Type of Methodology Used:Regression cross-section
Sample Size (crashes):755 crashes
Sample Size (sites):253 sites
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Mar 08, 2016
Comments: