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: | [View score details] |
Rating Points Total: | 105 |
Crash Modification Factor (CMF) | |
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Value: | 0.77 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.1 |
Crash Reduction Factor (CRF) | |
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Value: | 23 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 10 |
Applicability | |
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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 | |
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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 | |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Jun 17, 2018 |
Comments: | CMF for rear-end red-light running crashes |