CMF / CRF Details

CMF ID: 421

Install red-light cameras

Description: RLR enforcement cameras

Prior Condition: No Prior Condition(s)

Category: Advanced technology and ITS

Study: A Multi-Jurisdictional Safety Evaluation of Red Light Cameras, Persaud et al., 2005

 
Star Quality Rating: 4 Stars
Crash Modification Factor (CMF)
Value: 0.84
Adjusted Standard Error: 0.07
Unadjusted Standard Error: 0.06
Crash Reduction Factor (CRF)
Value: 16   (This value indicates a decrease in crashes)
Adjusted Standard Error: 7
Unadjusted Standard Error: 6
Applicability
Crash Type: Angle,Left turn
Crash Severity: A (serious injury),B (minor injury),C (possible injury)
Roadway Types: Not Specified
Number of Lanes:
Road Division Type:
Speed Limit:
Area Type: Urban
Traffic Volume:
Average Traffic Volume:
Time of Day:
If countermeasure is intersection-based
Intersection Type: Roadway/roadway (not interchange related)
Intersection Geometry: Not Specified
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:
Municipality:
State:
Country:
Type of Methodology Used: Before/after using empirical Bayes or full Bayes
Other Details
Included in Highway Safety Manual? Yes. HSM lists this CMF in bold font to indicate that it has the highest reliability since it has an adjusted standard error of 0.1 or less.
Date Added to Clearinghouse: Dec-01-2009
Comments: Countermeasure name changed to match HSM