CMF / CRF Details

CMF ID: 7861

Install red-light cameras

Description: RLR enforcement cameras

Prior Condition: Signalized intersections without red-light cameras

Category: Advanced technology and ITS

Study: Validation and Application of Highway Safety Manual (Part D) in Florida, Abdel-Aty et al., 2014

 
Star Quality Rating: 2 Stars   [View score details]
Rating Points Total: 45
Crash Modification Factor (CMF)
Value: 0.87
Adjusted Standard Error:
Unadjusted Standard Error: 0.09
Crash Reduction Factor (CRF)
Value: 13   (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 9
Applicability
Crash Type: Angle,Left turn
Crash Severity: K (fatal),A (serious injury),B (minor injury),C (possible injury)
Roadway Types: Not specified
Number of Lanes:
Road Division Type: All
Speed Limit:
Area Type: Urban
Traffic Volume:
Average Traffic Volume:
Time of Day: All
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: 2006 to 2011
Municipality:
State: FL
Country: USA
Type of Methodology Used: 2
Sample Size (sites): 25 sites before, 25 sites after
Sample Size (site-years): 75 site-years before, 75 site-years after
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Mar-08-2016
Comments: CMFs of angle and left-turn crashes on all approaches The number of crashes in the after period were not reported in this study, however, they have been recorded as 300 to give 10 points as a beneift of doubt for one or more of the following: (1) number of miles/sites in the reference/treatment group, (2) number of crashes in the references/treatment group, (3) reporting AADTs for the aggregate dataset but not for the disaggragate dataset used for CMF development.