CMF / CRF Details

CMF ID: 2692

Removal of automated speed enforcement cameras (compared to before 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: 3 Stars   [View score details]
Rating Points Total: 80
Crash Modification Factor (CMF)
Value: 0.79
Adjusted Standard Error:
Unadjusted Standard Error: 0.09
Crash Reduction Factor (CRF)
Value: 21.3   (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 9
Applicability
Crash Type: All
Crash Severity: O (property damage only)
Roadway Types: Not Specified
Street Type:
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Number of Lanes Comment:
Crash Weather: Not specified
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Maximum Speed Limit:
Speed Unit:
Speed Limit Comment:
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Traffic Volume:
Average Traffic Volume:
Time of Day: Night
If countermeasure is intersection-based
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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): 25610 crashes before, 4193 crashes after
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Aug-11-2010
Comments: