CMF / CRF Details

CMF ID: 9187

Deactivate red-light camera

Description:

Prior Condition:  Intersections with red-light running cameras

Category: Advanced technology and ITS

Study: Effects of Red Light Running Camera Systems Installation and Then Deactivation on Intersection Safety, Ko et al., 2017

 
Star Quality Rating:3 Stars  [View score details]
Rating Points Total:105
Crash Modification Factor (CMF)
Value:0.77
Adjusted Standard Error:
Unadjusted Standard Error:0.1
Crash Reduction Factor (CRF)
Value:23  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:10
Applicability
Crash Type:Other
Crash Severity:K (fatal),A (serious injury),B (minor injury),C (possible injury)
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:All
Minimum Speed Limit:
Maximum Speed Limit:
Speed Unit:
Speed Limit Comment:
Area Type:Urban
Traffic Volume:
Average Traffic Volume:
Time of Day:Not specified
If countermeasure is intersection-based
Intersection Type:
Intersection Geometry:No values chosen.
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:2008 to 2014
Municipality:Houston
State:TX
Country:
Type of Methodology Used:Before/after using empirical Bayes or full Bayes
Sample Size (crashes):28 crashes before, 44 crashes after
Sample Size (sites):48 sites before, 48 sites after
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Jun 17, 2018
Comments:CMF for rear-end red-light running crashes