CMF / CRF Details
CMF ID: 8343
Installation of fixed speed cameras
Description: Installation of fixed speed cameras on arterials limited access freeways
Prior Condition: No speed camera present
Category: Speed management
Study: Safety effects of fixed speed cameras - An empirical Bayes evaluation, Hoye, 2015
Star Quality Rating: | [View score details] |
Rating Points Total: | 90 |
Crash Modification Factor (CMF) | |
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Value: | 0.61 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.199 |
Crash Reduction Factor (CRF) | |
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Value: | 39 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 19.9 |
Applicability | |
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Crash Type: | All |
Crash Severity: | K (fatal),A (serious injury) |
Roadway Types: | Not specified |
Street Type: | |
Minimum Number of Lanes: | 2 |
Maximum Number of Lanes: | 2 |
Number of Lanes Direction: | |
Number of Lanes Comment: | |
Crash Weather: | Not specified |
Road Division Type: | |
Minimum Speed Limit: | 50 |
Maximum Speed Limit: | 90 |
Speed Unit: | km/h |
Speed Limit Comment: | |
Area Type: | Rural |
Traffic Volume: | |
Average Traffic Volume: | 8186 Annual Average Daily Traffic (AADT) |
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 | |
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Date Range of Data Used: | 2001 to 2009 |
Municipality: | |
State: | notusa |
Country: | Norway |
Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
Sample Size (crashes): | 61 crashes before, 27 crashes after |