CMF / CRF Details

CMF ID: 2681

Convert from yield signal control to signalized control

Description:

Prior Condition: yield control

Category: Intersection traffic control

Study: Safety Effects of Intersection Signalization: a Before-After Study, Jensen, 2010

 
Star Quality Rating: 4 Stars   [View score details]
Crash Modification Factor (CMF)
Value: 0.72
Adjusted Standard Error:
Unadjusted Standard Error: 0.1
Crash Reduction Factor (CRF)
Value: 28   (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 9.9
Applicability
Crash Type: Vehicle/pedestrian
Crash Severity: All
Roadway Types: Not Specified
Number of Lanes:
Road Division Type:
Speed Limit:
Area Type: Urban
Traffic Volume:
Average Traffic Volume:
Time of Day: All
If countermeasure is intersection-based
Intersection Type: Roadway/roadway (not interchange related)
Intersection Geometry: 4-leg
Traffic Control: Signalized
Major Road Traffic Volume:
Minor Road Traffic Volume:
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used: 1976 to 2004
Municipality: Copenhagen
State:
Country: Denmark
Type of Methodology Used: Simple before/after
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Aug-11-2010
Comments: This CMF is for intersection and roadway crashes up to 200 m away from intersection