CMF / CRF Details

CMF ID: 2688

Implement automated speed enforcement cameras

Description:

Prior Condition: media coverage of 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: 4 Stars   [View score details]
Crash Modification Factor (CMF)
Value: 0.84
Adjusted Standard Error:
Unadjusted Standard Error: 0.07
Crash Reduction Factor (CRF)
Value: 16.2   (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 7
Applicability
Crash Type: All
Crash Severity: All
Roadway Types: Not Specified
Number of Lanes:
Road Division Type:
Speed Limit:
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 :
Average Minor Road Volume :
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): 42673 crashes before, 5593 crashes after
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Aug-11-2010
Comments: