CMF / CRF Details
CMF ID: 9189
Deactivate red-light camera
Description:
Prior Condition: Nearby intersection has red-light 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: | 100 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 1.27 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.15 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | -27 (This value indicates an increase in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 15 |
| Applicability | |
|---|---|
| Crash Type: | Other |
| Crash Severity: | All |
| 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: | 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: | 2008 to 2014 |
| Municipality: | Houston |
| State: | TX |
| Country: | USA |
| Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
| Sample Size (crashes): | 135 crashes before, 139 crashes after |
| Sample Size (sites): | 27 sites before, 27 sites after |
