CMF / CRF Details
Implement mobile speed cameras
Countermeasure ID: 2964
Description: Implement mobile speed cameras
Prior Condition: No Prior Condition(s)
Category: Advanced technology and ITS
Study: Safety Effects of Mobile Speed Cameras in Norfolk: No More than Regression to the Mean?, Brenac, 2010
| Crash Modification Factor (CMF) |
|---|
| Value: | 1.09 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.14 |
| Crash Reduction Factor (CRF) |
|---|
| Value: | -9 (This value indicates an increase in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 13.9 |
| Applicability |
|---|
| Crash Type: | All |
| 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: | |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | Rural |
| Traffic Volume: | |
| Average Traffic Volume: | |
| 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 |
|---|
| Date Range of Data Used: | 1999 to 2003 |
| Municipality: | Norfolk County |
| State: | notusa |
| Country: | United Kingdom |
| Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
| Sample Size (crashes): | 145 crashes before, 129 crashes after |
| Other Details |
|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Mar 21, 2011 |
| Comments: | |
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