CMF / CRF Details

CMF ID: 2198

Presence of speed restriction devices (bike crashes)

Description: Includes red light cameras, speed humps, and other related measures.

Prior Condition:  No Prior Condition(s)

Category: Advanced technology and ITS

Study: Assessing Critical Factors Associated with Bicycle Collisions at Urban Signalized Intersections, Oh et al., 2008

Star Quality Rating:3 Stars  [View score details]
Rating Points Total:80
Crash Modification Factor (CMF)
Adjusted Standard Error:
Unadjusted Standard Error:0.22
Crash Reduction Factor (CRF)
Value:71.92  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:22.01
Crash Type:Vehicle/bicycle
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:
Traffic Volume:
Average Traffic Volume:
Time of Day:All
If countermeasure is intersection-based
Intersection Type:
Intersection Geometry:
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:2005 to 2005
Municipality:Incheon, South Korea
Type of Methodology Used:Regression cross-section
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Dec 01, 2009