CMF / CRF Details

CMF ID: 2694

Removal of automated speed enforcement cameras (compared to after implementation)

Description:

Prior Condition:  automated speed enforcement

Category: Advanced technology and ITS

Study: Estimating the Longer-Term Safety Effects of Speed Enforcement Cameras in Charlotte, NC, Moon and Hummer, 2010

 
Star Quality Rating:2 Stars  [View score details]
Rating Points Total:60
Crash Modification Factor (CMF)
Value:0.97
Adjusted Standard Error:
Unadjusted Standard Error:0.04
Crash Reduction Factor (CRF)
Value:3.4  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:3.9
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:
Traffic Volume:
Average Traffic Volume:
Time of Day:All
If countermeasure is intersection-based
Intersection Type:
Intersection Geometry:
Traffic Control:
Major Road Traffic Volume:
Minor Road Traffic Volume:
Average Major Road Volume :
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Development Details
Date Range of Data Used:1994 to 2008
Municipality:Charlotte
State:NC
Country:
Type of Methodology Used:Simple before/after
Sample Size (crashes):5593 crashes before, 6117 crashes after
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Aug 11, 2010
Comments: